CN104184294B - Enhanced pole-changing windings permasyn morot - Google Patents
Enhanced pole-changing windings permasyn morot Download PDFInfo
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- CN104184294B CN104184294B CN201410376327.9A CN201410376327A CN104184294B CN 104184294 B CN104184294 B CN 104184294B CN 201410376327 A CN201410376327 A CN 201410376327A CN 104184294 B CN104184294 B CN 104184294B
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Abstract
The present invention is a kind of enhanced pole-changing windings permasyn morot, and it relates to a kind of permasyn morot.Motor is when slow-speed of revolution synchronous operation, and several rotor main magnetic poles and several rotor auxiliary magnetic poles set up slow-speed of revolution rotor field jointly.Motor is when high synchronization is run, and several rotor main magnetic poles set up high rotating speed rotor field jointly.By the change of rotor auxiliary flux closed path, enhanced rotor is enable automatically to adapt to converting motor number of magnetic poles, it is achieved the pole-changing windings of permasyn morot.Meanwhile, during motor asynchronous starting, the tangential magnetic field that strengthens will not increase p-m rotor magnetic flux density in motor air gap, and produced by permanent magnet, dynamic brake torque is less, improves the asynchronous starting performance of enhanced rotor.When motor synchronous runs, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, improves synchronous operation performance and the power density of enhanced rotor.
Description
Technical field
The present invention is a kind of enhanced pole-changing windings permasyn morot, and it relates to a kind of permasyn morot, particularly relate to a kind of can the permasyn morot of asynchronous starting and pole-changing windings.
Background technology
AC asynchronous motor inefficient, the efficiency of permasyn morot is high, power factor is high, energy-saving effect is notable, so permasyn morot replaces AC asynchronous motor just gradually and becomes main flow motor.Common permasyn morot cannot self-starting, it is necessary to configuration converter, but converter is relatively costly.Asynchronous starting permanent magnet synchronous motor need not configure converter, it is possible to reduces equipment cost under energy-conservation premise.National standard " GB/T25303 weave special efficient rate permasyn morot technical conditions " and " GB/T22711 high-efficiency three-phase permasyn morot technical conditions " have respectively provided a kind of self-starting permasyn motor being applicable to weaving, petroleum industry.Permasyn morot in two standards all adopts built-in rotor, and built-in rotor structure is complicated, and discomfort is fit to do the motor of small dimension, so not having the fractional electric motor specification less than 1.1kw in two standards.
The big-and-middle-sized AC asynchronous motor that the two-speed motor adopted with oil field beam pumping unit is representative, it is common to adopting pole-changing windings power-saving technology, the mouse cage winding of AC asynchronous motor can adapt to converting motor number of magnetic poles automatically.Surface-type rotor and the built-in rotor of tradition permasyn morot all cannot adapt to converting motor number of magnetic poles automatically, therefore, and the method that tradition permasyn morot technology cannot adopt pole-changing windings.
The sectional area of rotor permanent magnet magnetizing direction is more big with the ratio of motor air gap sectional area, and rotor permanent magnet magnetic field magnetic flux density in motor air gap is more big, then the power density of motor is more big.
Summary of the invention
It is an object of the invention to overcome conventional small permasyn morot cannot self-starting, can not the defect of pole-changing windings, it is provided that a kind of can asynchronous starting, pole-changing windings, motor power (output) density bigger be applicable to minitype permanent magnetism synchronous motor.Embodiment of the present invention are as follows:
The total rotor being characterized by enhanced pole-changing windings permasyn morot of the present invention adopts enhanced rotor, and motor stator winding adopts non-pole-changing stator winding or pole-changing stator winding.
The rotor core components of enhanced rotor is mainly made up of several permanent magnetism iron cores and several enhanced two kinds of rotor cores of mouse cage iron core.Permanent magnetism iron core has pole-changing permanent magnetism iron core and non-two kinds of structures of pole-changing permanent magnetism iron core.Enhanced rotor is divided into pole-changing enhanced rotor and non-pole-changing enhanced rotor.The rotor core components of pole-changing enhanced rotor is the pole-changing rotor core components containing pole-changing permanent magnetism iron core and enhanced mouse cage iron core.The rotor core components of non-pole-changing enhanced rotor is the non-pole-changing rotor core components containing non-pole-changing permanent magnetism iron core and enhanced mouse cage iron core.Pole-changing enhanced rotor is assembled together with the motor stator containing pole-changing stator winding, forms asynchronous starting pole-changing windings permasyn morot.Non-pole-changing enhanced rotor is assembled together with the motor stator containing non-pole-changing stator winding, forms asynchronous starting permanent magnet synchronous motor.
The radially-outer surface of pole-changing permanent magnetism iron core has several rotor recesses and several rotor with salient pole.Each rotor recesses is pasted with the permanent magnet of two opposite poles each other, the opposite pole each other of the adjacent permanent magnet between adjacent rotor groove.Each permanent magnet forms a rotor main magnetic pole.Closed-loop path is formed between the rotor main magnetic flux two rotor main magnetic poles in same rotor recesses.The rotor with salient pole side that each permanent magnet magnetization is adjacent, forms the rotor auxiliary magnetic pole of and this permanent magnet opposite pole each other.Rotor auxiliary flux forms closed-loop path between permanent magnet and rotor with salient pole.
Enhanced pole-changing windings permasyn morot is when slow-speed of revolution synchronous operation, and several rotor main magnetic poles and several rotor auxiliary magnetic poles set up slow-speed of revolution rotor field jointly.Enhanced pole-changing windings permasyn morot is when high synchronization is run, the stator complementary field that the magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces and rotor auxiliary magnetic pole like pole each other, under the magneticaction that the same polarity of stator complementary field is mutually exclusive, rotor auxiliary flux does not form closed-loop path between permanent magnet and rotor with salient pole, and rotor auxiliary flux is incorporated in rotor main magnetic flux.High rotating speed rotor field is jointly set up by several rotor main magnetic poles.The change of rotor auxiliary flux closed path, enables pole-changing enhanced rotor automatically to adapt to converting motor number of magnetic poles, it is achieved the pole-changing windings of permasyn morot.
The radially-outer surface of enhanced mouse cage iron core has the enhancing magnet steel groove that several are deep and narrow, is pasted with one and strengthens magnet steel, form a tangential enhancing magnetic field in each enhancing magnet steel groove, and strengthening magnet steel groove bottom land is magnetic bridge.When not having externally-applied magnetic field effect, the tangential magnetic field flux path that strengthens closes along magnetic bridge.In the most of the time section of motor asynchronous starting, the magnetic direction that stator field acts on magnetic bridge place is not contrary with the magnetic direction that enhancing magnet steel acts on magnetic bridge place, the tangential magnetic field flux path that strengthens still closes along magnetic bridge, and the tangential magnetic field that strengthens will not increase p-m rotor magnetic flux density in motor air gap.When motor synchronous runs, the magnetic direction that stator field acts on magnetic bridge place is contrary with the magnetic direction that enhancing magnet steel acts on magnetic bridge place, stator field forces tangential enhancing magnetic field flux path traverse motor air gap, the tangential magnetic field flux path that strengthens closes in stator core in motor, and the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap.
During motor asynchronous starting, the tangential magnetic field that strengthens will not increase p-m rotor magnetic flux density in motor air gap, and produced by permanent magnet, dynamic brake torque is less, improves the asynchronous starting performance of enhanced rotor.When motor synchronous runs, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, improves synchronous operation performance and the power density of enhanced rotor.
Pole-changing enhanced rotor main will by rotating shaft, form every magnetic lining, pole-changing rotor core components, pole-changing rotor cage, rotor permanent magnet body component.Pole-changing rotor cage, rotor permanent magnet body component are arranged in pole-changing rotor core components, pole-changing rotor core components is arranged in the rotating shaft of non-magnet material, or pole-changing rotor core components is arranged on magnetic lining, is arranged in the rotating shaft of permeability magnetic material every magnetic lining.
Rotating shaft is cylindrical, and material is permeability magnetic material or non-magnet material.The rotating shaft of permeability magnetic material need with every magnetic lining with the use of.Cylindrical every magnetic lining, material is non-magnet material.
Pole-changing rotor core components is including at least having a pole-changing permanent magnetism iron core and an enhanced mouse cage iron core.Pole-changing permanent magnetism iron core is axially aligned with enhanced mouse cage iron core, has a coupling ring between pole-changing permanent magnetism iron core and enhanced mouse cage iron core.
Enhanced mouse cage iron core is overrided to form by several enhanced mouse cage core stampings, the permeability magnetic material that enhanced mouse cage core stamping material is is representative with stalloy.Enhanced mouse cage iron core ringwise, is axis hole in the middle of enhanced mouse cage iron core.Enhanced mouse cage iron core radial outside edge several mouse cage iron core sliver grooves uniform, mouse cage iron core sliver groove is open slot or closed slot.The radially-outer surface of enhanced mouse cage iron core has the enhancing magnet steel groove that several are deep and narrow, and strengthening magnet steel groove bottom land is magnetic bridge.Strengthening magnet steel groove both sides is several auxiliary mouse cage sliver grooves, and auxiliary mouse cage sliver groove is compared with mouse cage iron core sliver groove, and auxiliary mouse cage sliver groove deep is shallower, and auxiliary mouse cage sliver groove is open slot or closed slot.
Pole-changing permanent magnetism iron core is overrided to form by several pole-changing permanent magnetism core stampings, the permeability magnetic material that pole-changing permanent magnetism iron core Material quality of lamination is is representative with stalloy.Pole-changing permanent magnetism iron core ringwise, is axis hole in the middle of pole-changing permanent magnetism iron core.Pole-changing permanent magnet core diameter edge laterally several rotor recesses uniform and several rotor with salient pole, rotor recesses is called core magnetic pole groove, and rotor with salient pole is called iron core salient pole.It it is step-like rotor regulating tank between core magnetic pole groove and iron core salient pole.Core magnetic pole groove is several commutation mouse cage sliver grooves uniform near the inner side of axis hole, and commutation mouse cage sliver groove is closed slot or open slot.Iron core salient pole is several core mouse cage sliver grooves uniform near the inner side of axis hole, core mouse cage sliver groove is open slot or closed slot, core mouse cage sliver groove is convex slot, peariform slot and the flat-bottom slot that double; two mouse cage shape or deep trouth shape, core mouse cage sliver groove or employing are commonly used.
Step-like rotor regulating tank side is used for positioning when pasting permanent magnet, changes the rotor regulating tank degree of depth, thus it is possible to vary the radial direction leakage magnetic flux quantity that permanent magnet is produced by rotor regulating tank.
Ringwise, coupling ring material is permeability magnetic material or non-magnet material to coupling ring.
Pole-changing rotor cage aluminium die-casting is made, or makes with copper material welding.In the middle of pole-changing rotor cage be annular every magnetic end ring, two ends are cage ring one and cage ring two respectively.Every magnetic end ring and cage ring two ringwise.Having several mouse cage iron core slivers between magnetic end ring and cage ring two, mouse cage iron core sliver is corresponding with the mouse cage iron core sliver groove location of enhanced mouse cage iron core.Pole-changing rotor cage have between magnetic end ring and cage ring two several auxiliary mouse cage sliver, auxiliary mouse cage sliver corresponding with the auxiliary mouse cage sliver groove location of enhanced mouse cage iron core.The cage ring one of pole-changing rotor cage ringwise, and, cage ring one radial outside edge several end ring grooves uniform.End ring groove is corresponding with the core magnetic pole groove location of pole-changing permanent magnetism iron core.Pole-changing rotor cage between magnetic end ring and cage ring one, have several commutation mouse cage slivers and several core mouse cage slivers.Commutation mouse cage sliver is corresponding with the commutation mouse cage sliver groove location of pole-changing permanent magnetism iron core.Core mouse cage sliver is corresponding with the core mouse cage sliver groove location of pole-changing permanent magnetism iron core.
Rotor permanent magnet body component is made up of several permanent magnets and several enhancing magnet steel.Permanent magnet is tile shape.Permanent magnet for pole-changing enhanced rotor is pasted onto in the core magnetic pole groove of pole-changing permanent magnetism iron core.Adjacent permanent magnet circular arc external surface opposite pole each other.
Strengthen magnet steel rectangular, strengthen magnet steel be permanent magnet material, strengthen magnet steel be pasted onto enhancing magnet steel groove in, with strengthen two contacts side surfaces of magnet steel groove be respectively strengthen magnet steel two magnetic poles.The adjacent magnetic pole opposite pole each other strengthening magnet steel.The core magnetic pole groove strengthening magnet steel position and pole-changing permanent magnetism iron core of pole-changing enhanced rotor is axially aligned, and the permanent magnet pole polarity strengthening magnet steel two ends pole polarity axially aligned with this core magnetic pole groove respectively is identical.
The permanent magnet that circular arc external surface is N pole of pole-changing enhanced rotor or non-pole-changing enhanced rotor forms a N pole rotor main magnetic pole, and the permanent magnet that circular arc external surface is S pole forms a S pole rotor main magnetic pole.
The iron core salient pole side that the permanent magnet magnetization of the N pole rotor main magnetic pole of pole-changing enhanced rotor is contiguous, forms a S ' pole rotor auxiliary magnetic pole.The iron core salient pole side that the permanent magnet magnetization of S pole rotor main magnetic pole is contiguous, forms a N ' pole rotor auxiliary magnetic pole.
Iron core salient pole outer surface is salient pole air gap to the motor air gap of stator core inner surface, and permanent magnet outer surface is permanent magnet air gap to the motor air gap of stator core inner surface.Salient pole gas length is less than or equal to permanent magnet gas length.Enhanced mouse cage core exterior surface is mouse cage iron core air gap to the motor air gap of stator core inner surface.Mouse cage iron core air gap length is less than or equal to salient pole gas length.
The magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces stator complementary field.Stator complementary field is a part for stator rotating excitation field.Stator complementary field magnetic flux path is, the magnetic line of force is by the n pole of stator core, S ' pole rotor auxiliary magnetic pole is entered through salient pole air gap, the magnetic line of force is walked around inside core mouse cage sliver, the magnetic line of force is through N ' pole rotor auxiliary magnetic pole, enter the s pole of stator core through salient pole air gap, the magnetic line of force returns to the n pole of stator core, forms closed-loop path.
Pole-changing enhanced rotor slow-speed of revolution synchronous operation process is: when pole-changing enhanced rotor is pulled into slow-speed of revolution synchronous operation, stator rotating excitation field number of magnetic poles is many.The stator complementary field that the magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces and rotor auxiliary magnetic pole opposite pole each other, under the magneticaction that the heteropolarity of stator complementary field attracts each other, increase the permanent magnet magnetization to rotor auxiliary magnetic pole.Pole-changing enhanced rotor field number of magnetic poles is identical with stator rotating excitation field number of magnetic poles, and one_to_one corresponding.Several rotor main magnetic poles and several rotor auxiliary magnetic poles set up slow-speed of revolution rotor field jointly.The slow-speed of revolution rotor field of pole-changing enhanced rotor interacts with stator rotating excitation field and produces synchronizing torque.
When pole-changing enhanced rotor is in slow-speed of revolution synchronous operation, the magnetic direction that stator field acts on magnetic bridge place is contrary with the magnetic direction that enhancing magnet steel acts on magnetic bridge place, stator field forces tangential enhancing magnetic field flux path traverse motor air gap, the tangential magnetic field flux path that strengthens closes in stator core in motor, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, improves synchronous operation performance and the power density of enhanced rotor.
Pole-changing enhanced rotor high synchronization running is: when pole-changing enhanced rotor is pulled into the operation of high synchronization, stator rotating excitation field number of magnetic poles reduces.The stator complementary field that the magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces and rotor auxiliary magnetic pole like pole each other, under the magneticaction that the same polarity of stator complementary field is mutually exclusive, rotor auxiliary flux does not form closed-loop path between permanent magnet and rotor with salient pole, and rotor auxiliary flux is incorporated in rotor main magnetic flux.Pole-changing enhanced rotor field number of magnetic poles is identical with stator rotating excitation field number of magnetic poles, and one_to_one corresponding.Several rotor main magnetic poles set up high rotating speed rotor field jointly.The high rotating speed rotor field of pole-changing enhanced rotor interacts with stator rotating excitation field and produces synchronizing torque.
When pole-changing enhanced rotor is in the operation of high synchronization, the magnetic direction that stator field acts on magnetic bridge place is contrary with the magnetic direction that enhancing magnet steel acts on magnetic bridge place, stator field forces tangential enhancing magnetic field flux path traverse motor air gap, the tangential magnetic field flux path that strengthens closes in stator core in motor, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, improves synchronous operation performance and the power density of enhanced rotor.
Pole-changing enhanced rotor asynchronous starting process is: pole-changing enhanced rotor is when asynchronous starting, the magnetic line of force relying primarily on mouse cage iron core sliver and auxiliary mouse cage sliver cutting stator rotating excitation field produces asynchronous starting torque, and pole-changing enhanced rotor is pulled in rotating speed.Pole-changing enhanced rotor is when asynchronous starting, and the magnetic line of force of core mouse cage sliver cutting stator rotating excitation field produces perpendicularly inward faradic current or vertically outside faradic current.Perpendicularly inward faradic current or vertically outside faradic current converge at cage ring one or every magnetic end ring position respectively, form faradic current closed-loop path.Unbalanced perpendicularly inward faradic current or vertically outside faradic current on two senses of current, change inductive current direction in commutation mouse cage sliver, finally converge at cage ring one or every magnetic end ring position, form faradic current closed-loop path.During pole-changing enhanced rotor asynchronous starting, core mouse cage sliver can produce asynchronous starting torque, improves the asynchronous starting performance of pole-changing enhanced rotor.
Non-pole-changing enhanced rotor main will by rotating shaft, form every magnetic lining, non-pole-changing rotor core components, non-pole-changing rotor cage, rotor permanent magnet body component.Non-pole-changing rotor cage, rotor permanent magnet body component are arranged in non-pole-changing rotor core components, non-pole-changing rotor core components is arranged in the rotating shaft of non-magnet material, or non-pole-changing rotor core components is arranged on magnetic lining, is arranged in the rotating shaft of permeability magnetic material every magnetic lining.
Non-pole-changing rotor core components is including at least having a non-pole-changing permanent magnetism iron core and an enhanced mouse cage iron core.Non-pole-changing permanent magnetism iron core is axially aligned with enhanced mouse cage iron core, has a coupling ring between non-pole-changing permanent magnetism iron core and enhanced mouse cage iron core.
Non-pole-changing permanent magnetism iron core is overrided to form by several non-pole-changing permanent magnetism core stampings, the permeability magnetic material that non-pole-changing permanent magnetism iron core Material quality of lamination is is representative with stalloy.Non-pole-changing permanent magnetism iron core ringwise, is axis hole in the middle of non-pole-changing permanent magnetism iron core.Non-pole-changing permanent magnet core diameter edge laterally several commutation mouse cage sliver grooves uniform, commutation mouse cage sliver groove is open slot or closed slot.
Non-pole-changing rotor cage aluminium die-casting is made, or makes with copper material welding.In the middle of non-pole-changing rotor cage be annular every magnetic end ring, two ends are cage ring one and cage ring two respectively.Every magnetic end ring and cage ring two ringwise.Having several mouse cage iron core slivers between magnetic end ring and cage ring two, mouse cage iron core sliver is corresponding with the mouse cage iron core sliver groove location of enhanced mouse cage iron core.Non-pole-changing rotor cage have between magnetic end ring and cage ring two several auxiliary mouse cage sliver, auxiliary mouse cage sliver corresponding with the auxiliary mouse cage sliver groove location of enhanced mouse cage iron core.The cage ring one of non-pole-changing rotor cage is ringwise.Having several commutation mouse cage slivers between magnetic end ring and cage ring one, commutation mouse cage sliver is corresponding with the commutation mouse cage sliver groove location of non-pole-changing permanent magnetism iron core.
Rotor permanent magnet body component is made up of several permanent magnets and several enhancing magnet steel.Permanent magnet is tile shape.Permanent magnet for non-pole-changing enhanced rotor is pasted onto non-pole-changing permanent magnet core diameter exterior surface.Adjacent permanent magnet circular arc external surface opposite pole each other.
Strengthen magnet steel rectangular, strengthen magnet steel be permanent magnet material, strengthen magnet steel be arranged on enhancing magnet steel groove in, with strengthen two contacts side surfaces of magnet steel groove be respectively strengthen magnet steel two magnetic poles.The adjacent magnetic pole opposite pole each other strengthening magnet steel.The demarcation line of two permanent magnets strengthened on magnet steel position and non-pole-changing permanent magnetism iron core of non-pole-changing enhanced rotor is axially aligned, and the permanent magnet pole polarity strengthening magnet steel two ends pole polarity axially aligned with these both sides, demarcation line respectively is identical.
Non-pole-changing enhanced rotor asynchronous starting process is: non-pole-changing enhanced rotor is when asynchronous starting, the magnetic line of force relying on mouse cage iron core sliver and auxiliary mouse cage sliver cutting stator rotating excitation field produces asynchronous starting torque, and non-pole-changing enhanced rotor is pulled in rotating speed.
Non-pole-changing enhanced rotor synchronous operation process is: when non-pole-changing enhanced rotor is pulled into synchronous operation, non-pole-changing enhanced rotor field number of magnetic poles is identical with stator rotating excitation field number of magnetic poles, and one_to_one corresponding.Several rotor main magnetic poles set up rotor field jointly.The rotor field of non-pole-changing enhanced rotor interacts with stator rotating excitation field and produces synchronizing torque.
When non-pole-changing enhanced rotor is in synchronous operation, the magnetic direction that stator field acts on magnetic bridge place is contrary with the magnetic direction that enhancing magnet steel acts on magnetic bridge place, stator field forces tangential enhancing magnetic field flux path traverse motor air gap, the tangential magnetic field flux path that strengthens closes in stator core in motor, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, increases the power density of non-pole-changing enhanced rotor.
When the enhancing magnet steel quantity pasted in enhanced mouse cage iron core is more than more than four, the mouse cage iron core sliver quantity of enhanced rotor very little, can reduce the asynchronous starting performance of enhanced rotor.Number of magnetic poles be quadrupole, the ends of the earth, ten six types of severe debility diseases enhanced rotor be suitable in enhanced mouse cage iron core pasting two strengthening magnet steel.Number of magnetic poles be six types of severe debility disease, 12 poles enhanced rotor be suitable in enhanced mouse cage iron core paste three strengthen magnet steel.
Accompanying drawing explanation
Figure of description is structure chart and the schematic diagram of enhanced pole-changing windings permasyn morot.Wherein Fig. 1 is enhanced pole-changing windings permasyn morot isometric cutaway view.Fig. 2 is pole-changing enhanced armature spindle mapping, and rotor magnetic pole is quadrupole/ends of the earth.Fig. 3 is pole-changing enhanced rotor isometric cutaway view, and rotor magnetic pole is quadrupole/ends of the earth.Fig. 4 is pole-changing rotor core components isometric cutaway view, and rotor magnetic pole is quadrupole/ends of the earth.Fig. 5 is enhanced mouse cage iron mandrel mapping.Fig. 6 is pole-changing rotor cage axonometric drawing, and rotor magnetic pole is quadrupole/ends of the earth.Fig. 7 is pole-changing enhanced armature spindle mapping, and rotor magnetic pole is the ends of the earth/ten six types of severe debility disease.
When Fig. 8 is pole-changing enhanced rotor slow-speed of revolution synchronous operation, the magnetic field of permanent magnet of permanent magnetism iron core magnetic line of force path schematic diagram in motor air gap, along permanent magnet core radial section, rotor magnetic pole is quadrupole/ends of the earth, and magnetic pole of the stator is the ends of the earth.When Fig. 9 is pole-changing enhanced rotor slow-speed of revolution synchronous operation, the tangential of enhanced mouse cage iron core strengthens magnetic field flux path schematic diagram, along enhanced mouse cage iron core radial section, strengthens magnet steel two.When Figure 10 is the operation of pole-changing enhanced rotor high synchronization, the magnetic field of permanent magnet of permanent magnetism iron core magnetic line of force path schematic diagram in motor air gap, along permanent magnet core radial section, rotor magnetic pole is quadrupole/ends of the earth, and magnetic pole of the stator is quadrupole.When Figure 11 is the operation of pole-changing enhanced rotor high synchronization, the tangential of enhanced mouse cage iron core strengthens magnetic field flux path schematic diagram, along enhanced mouse cage iron core radial section, strengthens magnet steel two.Figure 12 be pole-changing enhanced rotor and non-pole-changing enhanced rotor when asynchronous starting, the magnetic line of force path schematic diagram of stator field, along enhanced mouse cage iron core radial section, magnetic pole of the stator is the ends of the earth.
Figure 13 is non-pole-changing enhanced armature spindle mapping, and rotor magnetic pole is quadrupole.Figure 14 is non-pole-changing enhanced rotor isometric cutaway view, and rotor magnetic pole is quadrupole.When Figure 15 is non-pole-changing enhanced rotor synchronous operation, the magnetic field of permanent magnet of permanent magnetism iron core magnetic line of force path schematic diagram in motor air gap, along permanent magnet core radial section, rotor magnetic pole is six types of severe debility disease, and magnetic pole of the stator is six types of severe debility disease.When Figure 16 is non-pole-changing enhanced rotor synchronous operation, the tangential of enhanced mouse cage iron core strengthens magnetic field flux path schematic diagram, along enhanced mouse cage iron core radial section, strengthens magnet steel three.Figure 17 is pole-changing enhanced armature spindle mapping, and rotor magnetic pole is six types of severe debility disease/12 poles.
In Fig. 1 to Figure 17, capital N and S represent rotor main pole polarity, and in figure, capital N ' and S ' represent rotor auxiliary magnetic pole polarity.Lower case n and behalf magnetic pole of the stator polarity.Letter Nz and Sz represents the pole polarity strengthening magnet steel.
nullFigure is labeled with rotating shaft 1、Cage ring 1、Every magnetic lining 3、Permanent magnet 4、Pole-changing permanent magnetism iron core 5、Core mouse cage sliver 6、Enhanced mouse cage iron core 7、Mouse cage iron core sliver 8、Every magnetic end ring 9、Cage ring 2 10、Strengthen magnet steel 11、Auxiliary mouse cage sliver 12、Auxiliary mouse cage sliver groove 13、Direction, rotor field 14、Commutation mouse cage sliver 15、Coupling ring 16、Iron core salient pole 17、Rotor regulating tank 18、Core magnetic pole groove 19、Axis hole 20、Commutation mouse cage sliver groove 21、Core mouse cage sliver groove 22、End ring groove 23、Stator 24、Stator field direction 25、Magnetic line of force path 26、Stator complementary field direction 27、Stator field direction of rotation 28、Rotor direction of rotation 29、Perpendicularly inward faradic current 30、Vertically outside faradic current 31、Non-pole-changing permanent magnetism iron core 32、Mouse cage iron core sliver groove 33、Stator complementary field magnetic flux path 34、Strengthen magnet steel groove 35、Magnetic bridge 36、Tangential enhancing magnetic direction 37、The tangential magnetic field flux path 38 that strengthens forms.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further discussed below.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 8, Fig. 9, Figure 10 and Figure 11, the rotor of enhanced pole-changing windings permasyn morot adopts enhanced rotor, and motor stator winding adopts non-pole-changing stator winding or pole-changing stator winding.
The rotor core components of enhanced rotor is mainly made up of several permanent magnetism iron cores and several two kinds of rotor cores of enhanced mouse cage iron core 7.Permanent magnetism iron core has pole-changing permanent magnetism iron core 5 and non-32 two kinds of structures of pole-changing permanent magnetism iron core.Enhanced rotor is divided into pole-changing enhanced rotor and non-pole-changing enhanced rotor.The rotor core components of pole-changing enhanced rotor is the pole-changing rotor core components containing pole-changing permanent magnetism iron core 5 and enhanced mouse cage iron core 7.The rotor core components of non-pole-changing enhanced rotor is the non-pole-changing rotor core components containing non-pole-changing permanent magnetism iron core 32 and enhanced mouse cage iron core 7.Pole-changing enhanced rotor is assembled together with the motor stator containing pole-changing stator winding, forms asynchronous starting pole-changing windings permasyn morot.Non-pole-changing enhanced rotor is assembled together with the motor stator containing non-pole-changing stator winding, forms asynchronous starting permanent magnet synchronous motor.
The radially-outer surface of pole-changing permanent magnetism iron core 5 has several rotor recesses and several rotor with salient pole.Each rotor recesses is pasted with the permanent magnet 4 of two opposite poles each other, adjacent permanent magnet 4 opposite pole each other between adjacent rotor groove.Each permanent magnet 4 forms a rotor main magnetic pole.Closed-loop path is formed between the rotor main magnetic flux two rotor main magnetic poles in same rotor recesses.Each permanent magnet 4 magnetizes adjacent rotor with salient pole side, forms the rotor auxiliary magnetic pole of and this permanent magnet 4 opposite pole each other.Rotor auxiliary flux forms closed-loop path between permanent magnet 4 and rotor with salient pole.
Enhanced pole-changing windings permasyn morot is when slow-speed of revolution synchronous operation, and several rotor main magnetic poles and several rotor auxiliary magnetic poles set up slow-speed of revolution rotor field jointly.Enhanced pole-changing windings permasyn morot is when high synchronization is run, the stator complementary field that the magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces and rotor auxiliary magnetic pole like pole each other, under the magneticaction that the same polarity of stator complementary field is mutually exclusive, rotor auxiliary flux does not form closed-loop path between permanent magnet 4 and rotor with salient pole, and rotor auxiliary flux is incorporated in rotor main magnetic flux.High rotating speed rotor field is jointly set up by several rotor main magnetic poles.The change of rotor auxiliary flux closed path, enables pole-changing enhanced rotor automatically to adapt to converting motor number of magnetic poles, it is achieved the pole-changing windings of permasyn morot.
The radially-outer surface of enhanced mouse cage iron core 7 has the enhancing magnet steel groove 35 that several are deep and narrow, is pasted with one and strengthens magnet steel 11, form a tangential enhancing magnetic field in each enhancing magnet steel groove 35, and strengthening magnet steel groove 35 bottom land is magnetic bridge 36.When not having externally-applied magnetic field effect, the tangential magnetic field flux path 38 that strengthens closes along magnetic bridge 36.In the most of the time section of motor asynchronous starting, the magnetic direction that stator field acts on magnetic bridge 36 place is not contrary with the magnetic direction that enhancing magnet steel 11 acts on magnetic bridge 36 place, the tangential magnetic field flux path 38 that strengthens still closes along magnetic bridge 36, and the tangential magnetic field that strengthens will not increase p-m rotor magnetic flux density in motor air gap.When motor synchronous runs, the magnetic direction that stator field acts on magnetic bridge 36 place is contrary with the magnetic direction that enhancing magnet steel 11 acts on magnetic bridge 36 place, stator field forces tangential enhancing magnetic field flux path 38 traverse motor air gap, the tangential magnetic field flux path 38 that strengthens closes in stator core in motor, and the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap.
During motor asynchronous starting, the tangential magnetic field that strengthens will not increase p-m rotor magnetic flux density in motor air gap, and produced by permanent magnet, dynamic brake torque is less, improves the asynchronous starting performance of enhanced rotor.When motor synchronous runs, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, improves synchronous operation performance and the power density of enhanced rotor.
With reference to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Figure 17, pole-changing enhanced rotor main will by rotating shaft 1, form every magnetic lining 3, pole-changing rotor core components, pole-changing rotor cage, rotor permanent magnet body component.Pole-changing rotor cage, rotor permanent magnet body component are arranged in pole-changing rotor core components, pole-changing rotor core components is arranged in the rotating shaft 1 of non-magnet material, or pole-changing rotor core components is arranged on magnetic lining 3, is arranged in the rotating shaft 1 of permeability magnetic material every magnetic lining 3.
Rotating shaft 1 is cylindrical, and material is permeability magnetic material or non-magnet material.The rotating shaft 1 of permeability magnetic material need with every magnetic lining 3 with the use of.Cylindrical every magnetic lining 3, material is non-magnet material.
Pole-changing rotor core components is including at least having a pole-changing permanent magnetism iron core 5 and an enhanced mouse cage iron core 7.Pole-changing permanent magnetism iron core 5 is axially aligned with enhanced mouse cage iron core 7, has a coupling ring 16 between pole-changing permanent magnetism iron core 5 and enhanced mouse cage iron core 7.
Enhanced mouse cage iron core 7 is overrided to form by several enhanced mouse cage core stampings, the permeability magnetic material that enhanced mouse cage core stamping material is is representative with stalloy.Enhanced mouse cage iron core 7 ringwise, is axis hole 20 in the middle of enhanced mouse cage iron core 7.Enhanced mouse cage iron core 7 radial outside edge several mouse cage iron core sliver grooves 33 uniform, mouse cage iron core sliver groove 33 is open slot or closed slot.The radially-outer surface of enhanced mouse cage iron core 7 has the enhancing magnet steel groove 35 that several are deep and narrow, and strengthening magnet steel groove 35 bottom land is magnetic bridge 36.Strengthening magnet steel groove 35 both sides is several auxiliary mouse cage sliver grooves 13, and auxiliary mouse cage sliver groove 13 is compared with mouse cage iron core sliver groove 33, and auxiliary mouse cage sliver groove 13 groove depth is shallower, and auxiliary mouse cage sliver groove 13 is open slot or closed slot.
Pole-changing permanent magnetism iron core 5 is overrided to form by several pole-changing permanent magnetism core stampings, the permeability magnetic material that pole-changing permanent magnetism iron core Material quality of lamination is is representative with stalloy.Pole-changing permanent magnetism iron core 5 ringwise, is axis hole 20 in the middle of pole-changing permanent magnetism iron core 5.Pole-changing permanent magnetism iron core 5 radial outside edge several rotor recesses uniform and several rotor with salient pole, rotor recesses is called core magnetic pole groove 19, and rotor with salient pole is called iron core salient pole 17.It it is step-like rotor regulating tank 18 between core magnetic pole groove 19 and iron core salient pole 17.Core magnetic pole groove 19 is several commutation mouse cage sliver grooves 21 uniform near the inner side of axis hole 20, and commutation mouse cage sliver groove 21 is closed slot or open slot.Iron core salient pole 17 is several core mouse cage sliver grooves 22 uniform near the inner side of axis hole 20, core mouse cage sliver groove 22 is open slot or closed slot, core mouse cage sliver groove 22 is convex slot, peariform slot and the flat-bottom slot that double; two mouse cage shape or deep trouth shape, core mouse cage sliver groove 22 or employing are commonly used.
Step-like rotor regulating tank 18 side is used for positioning when pasting permanent magnet 4, changes rotor regulating tank 18 degree of depth, thus it is possible to vary the radial direction leakage magnetic flux quantity that permanent magnet 4 is produced by rotor regulating tank 18.
Ringwise, coupling ring 16 material is permeability magnetic material or non-magnet material to coupling ring 16.
Pole-changing rotor cage aluminium die-casting is made, or makes with copper material welding.In the middle of pole-changing rotor cage be annular every magnetic end ring 9, two ends are cage ring 1 and cage ring 2 10 respectively.Every magnetic end ring 9 and cage ring 2 10 ringwise.Having several mouse cage iron core slivers 8 between magnetic end ring 9 and cage ring 2 10, mouse cage iron core sliver 8 is corresponding with mouse cage iron core sliver groove 33 position of enhanced mouse cage iron core 7.Pole-changing rotor cage have between magnetic end ring 9 and cage ring 2 10 several auxiliary mouse cage sliver 12, auxiliary mouse cage sliver 12 corresponding with auxiliary mouse cage sliver groove 13 position of enhanced mouse cage iron core 7.The cage ring 1 of pole-changing rotor cage ringwise, and, cage ring 1 radial outside edge several end ring grooves 23 uniform.End ring groove 23 is corresponding with core magnetic pole groove 19 position of pole-changing permanent magnetism iron core 5.Pole-changing rotor cage between magnetic end ring 9 and cage ring 1, have several commutation mouse cage slivers 15 and several core mouse cage slivers 6.Commutation mouse cage sliver 15 is corresponding with commutation mouse cage sliver groove 21 position of pole-changing permanent magnetism iron core 5.Core mouse cage sliver 6 is corresponding with core mouse cage sliver groove 22 position of pole-changing permanent magnetism iron core 5.
Rotor permanent magnet body component is made up of several permanent magnets 4 and several enhancing magnet steel 11.Permanent magnet 4 is in tile shape.Permanent magnet 4 for pole-changing enhanced rotor is pasted onto in the core magnetic pole groove 19 of pole-changing permanent magnetism iron core 5.Adjacent permanent magnet 4 circular arc external surface opposite pole each other.
Strengthen magnet steel 11 rectangular, strengthen magnet steel 11 be permanent magnet material, strengthen magnet steel 11 be pasted onto enhancing magnet steel groove 35 in, with strengthen 35 two contacts side surfaces of magnet steel groove be respectively strengthen magnet steel 11 two magnetic poles.The adjacent magnetic pole opposite pole each other strengthening magnet steel 11.The core magnetic pole groove 19 strengthening magnet steel 11 position and pole-changing permanent magnetism iron core 5 of pole-changing enhanced rotor is axially aligned, and permanent magnet 4 pole polarity strengthening magnet steel 11 two ends pole polarity axially aligned with this core magnetic pole groove 19 respectively is identical.
With reference to Fig. 8, Fig. 9, Figure 10, Figure 11 and Figure 12, the permanent magnet that circular arc external surface is N pole 4 of pole-changing enhanced rotor or non-pole-changing enhanced rotor forms a N pole rotor main magnetic pole, and the permanent magnet 4 that circular arc external surface is S pole forms a S pole rotor main magnetic pole.
Iron core salient pole 17 side of the permanent magnet 4 magnetization vicinity of the N pole rotor main magnetic pole of pole-changing enhanced rotor, forms a S ' pole rotor auxiliary magnetic pole.Iron core salient pole 17 side of the permanent magnet 4 magnetization vicinity of S pole rotor main magnetic pole, forms a N ' pole rotor auxiliary magnetic pole.
Iron core salient pole 17 outer surface is salient pole air gap to the motor air gap of stator 24 iron core inner surface, and permanent magnet 4 outer surface is permanent magnet air gap to the motor air gap of stator 24 iron core inner surface.Salient pole gas length is less than or equal to permanent magnet gas length.Enhanced mouse cage iron core 7 outer surface is mouse cage iron core air gap to the motor air gap of stator 24 iron core inner surface.Mouse cage iron core air gap length is less than or equal to salient pole gas length.
The magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces stator complementary field.Stator complementary field is a part for stator rotating excitation field.Stator complementary field magnetic flux path 34 is, the magnetic line of force is by the n pole of stator 24 iron core, S ' pole rotor auxiliary magnetic pole is entered through salient pole air gap, the magnetic line of force is walked around inside core mouse cage sliver 6, the magnetic line of force is through N ' pole rotor auxiliary magnetic pole, enter the s pole of stator 24 iron core through salient pole air gap, the magnetic line of force returns to the n pole of stator 24 iron core, forms closed-loop path.
Pole-changing enhanced rotor slow-speed of revolution synchronous operation process is: when pole-changing enhanced rotor is pulled into slow-speed of revolution synchronous operation, stator rotating excitation field number of magnetic poles is many.The stator complementary field that the magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces and rotor auxiliary magnetic pole opposite pole each other, under the magneticaction that the heteropolarity of stator complementary field attracts each other, increase the permanent magnet 4 magnetization to rotor auxiliary magnetic pole.Pole-changing enhanced rotor field number of magnetic poles is identical with stator rotating excitation field number of magnetic poles, and one_to_one corresponding.Several rotor main magnetic poles and several rotor auxiliary magnetic poles set up slow-speed of revolution rotor field jointly.The slow-speed of revolution rotor field of pole-changing enhanced rotor interacts with stator rotating excitation field and produces synchronizing torque.
When pole-changing enhanced rotor is in slow-speed of revolution synchronous operation, the magnetic direction that stator field acts on magnetic bridge 36 place is contrary with the magnetic direction that enhancing magnet steel 11 acts on magnetic bridge 36 place, stator field forces tangential enhancing magnetic field flux path 38 traverse motor air gap, the tangential magnetic field flux path 38 that strengthens closes in stator core in motor, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, improves synchronous operation performance and the power density of enhanced rotor.
Pole-changing enhanced rotor high synchronization running is: when pole-changing enhanced rotor is pulled into the operation of high synchronization, stator rotating excitation field number of magnetic poles reduces.The stator complementary field that the magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces and rotor auxiliary magnetic pole like pole each other, under the magneticaction that the same polarity of stator complementary field is mutually exclusive, rotor auxiliary flux does not form closed-loop path between permanent magnet 4 and rotor with salient pole, and rotor auxiliary flux is incorporated in rotor main magnetic flux.Pole-changing enhanced rotor field number of magnetic poles is identical with stator rotating excitation field number of magnetic poles, and one_to_one corresponding.Several rotor main magnetic poles set up high rotating speed rotor field jointly.The high rotating speed rotor field of pole-changing enhanced rotor interacts with stator rotating excitation field and produces synchronizing torque.
When pole-changing enhanced rotor is in the operation of high synchronization, the magnetic direction that stator field acts on magnetic bridge 36 place is contrary with the magnetic direction that enhancing magnet steel 11 acts on magnetic bridge 36 place, stator field forces tangential enhancing magnetic field flux path 38 traverse motor air gap, the tangential magnetic field flux path 38 that strengthens closes in stator core in motor, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, improves synchronous operation performance and the power density of enhanced rotor.
Pole-changing enhanced rotor asynchronous starting process is: pole-changing enhanced rotor is when asynchronous starting, the magnetic line of force relying primarily on mouse cage iron core sliver 8 and auxiliary mouse cage sliver 12 cutting stator rotating excitation field produces asynchronous starting torque, and pole-changing enhanced rotor is pulled in rotating speed.Pole-changing enhanced rotor is when asynchronous starting, and the magnetic line of force of core mouse cage sliver 6 cutting stator rotating excitation field produces perpendicularly inward faradic current 30 or vertically outside faradic current 31.Perpendicularly inward faradic current 30 or vertically outside faradic current 31 converge at cage ring 1 or every magnetic end ring 9 place respectively, form faradic current closed-loop path.Unbalanced perpendicularly inward faradic current 30 or vertically outside faradic current 31 on two senses of current, change inductive current direction in commutation mouse cage sliver 15, finally converge at cage ring 1 or every magnetic end ring 9 place, formation faradic current closed-loop path.During pole-changing enhanced rotor asynchronous starting, core mouse cage sliver 6 can produce asynchronous starting torque, improves the asynchronous starting performance of pole-changing enhanced rotor.
When enhancing magnet steel 11 quantity pasted in enhanced mouse cage iron core 7 is more than more than four, mouse cage iron core sliver 8 quantity of enhanced rotor very little, can reduce the asynchronous starting performance of enhanced rotor.Number of magnetic poles be quadrupole, the ends of the earth, ten six types of severe debility diseases enhanced rotor be suitable in enhanced mouse cage iron core 7 pasting two strengthening magnet steel 11.Number of magnetic poles be six types of severe debility disease, 12 poles enhanced rotor be suitable in enhanced mouse cage iron core 7 paste three strengthen magnet steel 11.
With reference to Figure 13, Figure 14, Figure 15 and Figure 16, non-pole-changing enhanced rotor main will by rotating shaft 1, form every magnetic lining 3, non-pole-changing rotor core components, non-pole-changing rotor cage, rotor permanent magnet body component.Non-pole-changing rotor cage, rotor permanent magnet body component are arranged in non-pole-changing rotor core components, non-pole-changing rotor core components is arranged in the rotating shaft 1 of non-magnet material, or non-pole-changing rotor core components is arranged on magnetic lining 3, is arranged in the rotating shaft 1 of permeability magnetic material every magnetic lining 3.
Non-pole-changing rotor core components is including at least having a non-pole-changing permanent magnetism iron core 32 and an enhanced mouse cage iron core 7.Non-pole-changing permanent magnetism iron core 32 is axially aligned with enhanced mouse cage iron core 7, has a coupling ring 16 between non-pole-changing permanent magnetism iron core 32 and enhanced mouse cage iron core 7.
Non-pole-changing permanent magnetism iron core 32 is overrided to form by several non-pole-changing permanent magnetism core stampings, the permeability magnetic material that non-pole-changing permanent magnetism iron core Material quality of lamination is is representative with stalloy.Non-pole-changing permanent magnetism iron core 32 ringwise, is axis hole 20 in the middle of non-pole-changing permanent magnetism iron core 32.Non-pole-changing permanent magnetism iron core 32 radial outside edge several commutation mouse cage sliver grooves 21 uniform, commutation mouse cage sliver groove 21 is open slot or closed slot.
Non-pole-changing rotor cage aluminium die-casting is made, or makes with copper material welding.In the middle of non-pole-changing rotor cage be annular every magnetic end ring 9, two ends are cage ring 1 and cage ring 2 10 respectively.Every magnetic end ring 9 and cage ring 2 10 ringwise.Having several mouse cage iron core slivers 8 between magnetic end ring 9 and cage ring 2 10, mouse cage iron core sliver 8 is corresponding with mouse cage iron core sliver groove 33 position of enhanced mouse cage iron core 7.Non-pole-changing rotor cage have between magnetic end ring 9 and cage ring 2 10 several auxiliary mouse cage sliver 12, auxiliary mouse cage sliver 12 corresponding with auxiliary mouse cage sliver groove 13 position of enhanced mouse cage iron core 7.The cage ring 1 of non-pole-changing rotor cage is ringwise.Having several commutation mouse cage slivers 15 between magnetic end ring 9 and cage ring 1, commutation mouse cage sliver 15 is corresponding with commutation mouse cage sliver groove 21 position of non-pole-changing permanent magnetism iron core 32.
Rotor permanent magnet body component is made up of several permanent magnets 4 and several enhancing magnet steel 11.Permanent magnet 4 is in tile shape.Permanent magnet 4 for non-pole-changing enhanced rotor is pasted onto non-pole-changing permanent magnetism iron core 32 radially-outer surface.Adjacent permanent magnet 4 circular arc external surface opposite pole each other.
Strengthen magnet steel 11 rectangular, strengthen magnet steel 11 be permanent magnet material, strengthen magnet steel 11 be arranged on enhancing magnet steel groove 35 in, with strengthen 35 two contacts side surfaces of magnet steel groove be respectively strengthen magnet steel 11 two magnetic poles.The adjacent magnetic pole opposite pole each other strengthening magnet steel 11.The demarcation line of two permanent magnets 4 strengthened on magnet steel 11 position and non-pole-changing permanent magnetism iron core 32 of non-pole-changing enhanced rotor is axially aligned, and permanent magnet 4 pole polarity strengthening magnet steel 11 two ends pole polarity axially aligned with these both sides, demarcation line respectively is identical.
Non-pole-changing enhanced rotor asynchronous starting process is: non-pole-changing enhanced rotor is when asynchronous starting, the magnetic line of force relying on mouse cage iron core sliver 8 and auxiliary mouse cage sliver 12 cutting stator rotating excitation field produces asynchronous starting torque, and non-pole-changing enhanced rotor is pulled in rotating speed.
Non-pole-changing enhanced rotor synchronous operation process is: when non-pole-changing enhanced rotor is pulled into synchronous operation, non-pole-changing enhanced rotor field number of magnetic poles is identical with stator rotating excitation field number of magnetic poles, and one_to_one corresponding.Several rotor main magnetic poles set up rotor field jointly.The rotor field of non-pole-changing enhanced rotor interacts with stator rotating excitation field and produces synchronizing torque.
When non-pole-changing enhanced rotor is in synchronous operation, the magnetic direction that stator field acts on magnetic bridge 36 place is contrary with the magnetic direction that enhancing magnet steel 11 acts on magnetic bridge 36 place, stator field forces tangential enhancing magnetic field flux path 38 traverse motor air gap, the tangential magnetic field flux path 38 that strengthens closes in stator core in motor, the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap, increases the power density of non-pole-changing enhanced rotor.
Claims (2)
1. an enhanced pole-changing windings permasyn morot, it is characterised in that the rotor of enhanced pole-changing windings permasyn morot adopts enhanced rotor, motor stator winding adopts non-pole-changing stator winding or pole-changing stator winding；
The rotor core components of enhanced rotor is mainly made up of several permanent magnetism iron cores and several enhanced mouse cage iron core (7) two kinds of rotor cores；Permanent magnetism iron core has pole-changing permanent magnetism iron core (5) and (32) two kinds of structures of non-pole-changing permanent magnetism iron core；Enhanced rotor is divided into pole-changing enhanced rotor and non-pole-changing enhanced rotor；The rotor core components of pole-changing enhanced rotor is the pole-changing rotor core components containing pole-changing permanent magnetism iron core (5) and enhanced mouse cage iron core (7)；The rotor core components of non-pole-changing enhanced rotor is the non-pole-changing rotor core components containing non-pole-changing permanent magnetism iron core (32) and enhanced mouse cage iron core (7)；Pole-changing enhanced rotor is assembled together with the motor stator containing pole-changing stator winding, forms asynchronous starting pole-changing windings permasyn morot；Non-pole-changing enhanced rotor is assembled together with the motor stator containing non-pole-changing stator winding, forms asynchronous starting permanent magnet synchronous motor；
The radially-outer surface of pole-changing permanent magnetism iron core (5) has several rotor recesses and several rotor with salient pole；Each rotor recesses is pasted with the permanent magnet (4) of two opposite poles each other, adjacent permanent magnet (4) opposite pole each other between adjacent rotor groove；Each permanent magnet (4) forms a rotor main magnetic pole；Closed-loop path is formed between the rotor main magnetic flux two rotor main magnetic poles in same rotor recesses；Each permanent magnet (4) magnetizes adjacent rotor with salient pole side, forms the rotor auxiliary magnetic pole of and this permanent magnet (4) opposite pole each other；Rotor auxiliary flux forms closed-loop path between permanent magnet (4) and rotor with salient pole；
Enhanced pole-changing windings permasyn morot is when slow-speed of revolution synchronous operation, and several rotor main magnetic poles and several rotor auxiliary magnetic poles set up slow-speed of revolution rotor field jointly；Enhanced pole-changing windings permasyn morot is when high synchronization is run, the stator complementary field that the magnetic pole of the stator on rotor auxiliary magnetic pole opposite produces and rotor auxiliary magnetic pole like pole each other, under the magneticaction that the same polarity of stator complementary field is mutually exclusive, rotor auxiliary flux does not form closed-loop path between permanent magnet (4) and rotor with salient pole, and rotor auxiliary flux is incorporated in rotor main magnetic flux；High rotating speed rotor field is jointly set up by several rotor main magnetic poles；The change of rotor auxiliary flux closed path, enables pole-changing enhanced rotor automatically to adapt to converting motor number of magnetic poles, it is achieved the pole-changing windings of permasyn morot；
The radially-outer surface of enhanced mouse cage iron core (7) has enhancing magnet steel groove (35) that several are deep and narrow, each enhancing magnet steel groove (35) is pasted with one and strengthens magnet steel (11), forming a tangential enhancing magnetic field, strengthening magnet steel groove (35) bottom land is magnetic bridge (36)；When not having externally-applied magnetic field effect, the tangential magnetic field flux path (38) that strengthens closes along magnetic bridge (36)；In the most of the time section of motor asynchronous starting, the magnetic direction that stator field acts on magnetic bridge (36) place is not contrary with the magnetic direction that enhancing magnet steel (11) acts on magnetic bridge (36) place, the tangential magnetic field flux path (38) that strengthens still closes along magnetic bridge (36), and the tangential magnetic field that strengthens will not increase p-m rotor magnetic flux density in motor air gap；When motor synchronous runs, the magnetic direction that stator field acts on magnetic bridge (36) place is contrary with the magnetic direction that enhancing magnet steel (11) acts on magnetic bridge (36) place, stator field forces tangential enhancing magnetic field flux path (38) traverse motor air gap, the tangential magnetic field flux path (38) that strengthens closes in stator core in motor, and the tangential magnetic field that strengthens can increase p-m rotor magnetic flux density in motor air gap.
2. enhanced pole-changing windings permasyn morot according to claim 1, it is characterised in that pole-changing enhanced rotor includes rotating shaft (1), pole-changing rotor core components, pole-changing rotor cage, rotor permanent magnet body component；Pole-changing rotor cage, rotor permanent magnet body component are arranged in pole-changing rotor core components, pole-changing rotor core components is arranged in the rotating shaft (1) of non-magnet material, or pole-changing rotor core components is arranged on magnetic lining (3), is arranged in the rotating shaft (1) of permeability magnetic material every magnetic lining (3)；
Rotating shaft (1) is cylindrical, and material is permeability magnetic material or non-magnet material；The rotating shaft (1) of permeability magnetic material need with every magnetic lining (3) with the use of；Cylindrical every magnetic lining (3), material is non-magnet material；
Pole-changing rotor core components is including at least having pole-changing permanent magnetism iron core (5) and enhanced mouse cage iron core (7)；Pole-changing permanent magnetism iron core (5) is axially aligned with enhanced mouse cage iron core (7), has a coupling ring (16) between pole-changing permanent magnetism iron core (5) and enhanced mouse cage iron core (7)；
Enhanced mouse cage iron core (7) is overrided to form by several enhanced mouse cage core stampings, and enhanced mouse cage core stamping material is permeability magnetic material；Enhanced mouse cage iron core (7) ringwise, is axis hole (20) in the middle of enhanced mouse cage iron core (7)；Enhanced mouse cage iron core (7) radial outside edge several mouse cages iron core sliver groove (33) uniform, mouse cage iron core sliver groove (33) is open slot or closed slot；The radially-outer surface of enhanced mouse cage iron core (7) has enhancing magnet steel groove (35) that several are deep and narrow, and strengthening magnet steel groove (35) bottom land is magnetic bridge (36)；Strengthening magnet steel groove (35) both sides is several auxiliary mouse cage sliver groove (13), auxiliary mouse cage sliver groove (13) is compared with mouse cage iron core sliver groove (33), auxiliary mouse cage sliver groove (13) groove depth is shallower, and auxiliary mouse cage sliver groove (13) is open slot or closed slot；
Pole-changing permanent magnetism iron core (5) is overrided to form by several pole-changing permanent magnetism core stampings, and pole-changing permanent magnetism iron core Material quality of lamination is permeability magnetic material；Pole-changing permanent magnetism iron core (5) ringwise, is axis hole (20) in the middle of pole-changing permanent magnetism iron core (5)；Pole-changing permanent magnetism iron core (5) radial outside edge several rotor recesses uniform and several rotor with salient pole, rotor recesses is called core magnetic pole groove (19), and rotor with salient pole is called iron core salient pole (17)；It it is step-like rotor regulating tank (18) between core magnetic pole groove (19) and iron core salient pole (17)；Core magnetic pole groove (19) is several commutations mouse cage sliver groove (21) uniform near the inner side of axis hole (20), and commutation mouse cage sliver groove (21) is closed slot or open slot；Iron core salient pole (17) is near inner side several cores mouse cage sliver groove (22) uniform of axis hole (20), core mouse cage sliver groove (22) is open slot or closed slot, core mouse cage sliver groove (22) is convex slot, peariform slot and the flat-bottom slot that double; two mouse cage shapes, core mouse cage sliver groove (22) or employing are commonly used；
Step-like rotor regulating tank (18) side is used for positioning when pasting permanent magnet (4), changes rotor regulating tank (18) degree of depth, thus it is possible to vary the radial direction leakage magnetic flux quantity that permanent magnet (4) is produced by rotor regulating tank (18)；
Ringwise, coupling ring (16) material is permeability magnetic material or non-magnet material to coupling ring (16)；
Pole-changing rotor cage aluminium die-casting is made, or makes with copper material welding；In the middle of pole-changing rotor cage be annular every magnetic end ring (9), two ends are cage ring one (2) and cage ring two (10) respectively；Every magnetic end ring (9) and cage ring two (10) ringwise；Having several mouse cages iron core sliver (8) between magnetic end ring (9) and cage ring two (10), mouse cage iron core sliver (8) is corresponding with mouse cage iron core sliver groove (33) position of enhanced mouse cage iron core (7)；Pole-changing rotor cage have between magnetic end ring (9) and cage ring two (10) several auxiliary mouse cage sliver (12), auxiliary mouse cage sliver (12) corresponding with auxiliary mouse cage sliver groove (13) position of enhanced mouse cage iron core (7)；The cage ring one (2) of pole-changing rotor cage ringwise, and, cage ring one (2) radial outside edge several end ring grooves (23) uniform；End ring groove (23) is corresponding with core magnetic pole groove (19) position of pole-changing permanent magnetism iron core (5)；Pole-changing rotor cage between magnetic end ring (9) and cage ring one (2), have several commutations mouse cage sliver (15) and several cores mouse cage sliver (6)；Commutation mouse cage sliver (15) is corresponding with commutation mouse cage sliver groove (21) position of pole-changing permanent magnetism iron core (5)；Core mouse cage sliver (6) is corresponding with core mouse cage sliver groove (22) position of pole-changing permanent magnetism iron core (5)；
Rotor permanent magnet body component is made up of several permanent magnets (4) and several enhancings magnet steel (11)；Permanent magnet (4) is in tile shape；Permanent magnet (4) for pole-changing enhanced rotor is pasted onto in the core magnetic pole groove (19) of pole-changing permanent magnetism iron core (5)；Adjacent permanent magnet (4) circular arc external surface opposite pole each other；
Strengthening magnet steel (11) rectangular, strengthening magnet steel (11) is permanent magnet material, strengthens magnet steel (11) and is pasted onto in enhancing magnet steel groove (35), is two magnetic poles strengthening magnet steel (11) respectively with what strengthen (35) two contacts side surfaces of magnet steel groove；The magnetic pole opposite pole each other of adjacent enhancing magnet steel (11)；Enhancing magnet steel (11) position of pole-changing enhanced rotor is axially aligned with the core magnetic pole groove (19) of pole-changing permanent magnetism iron core (5), and permanent magnet (4) pole polarity strengthening magnet steel (11) two ends pole polarity axially aligned with this core magnetic pole groove (19) respectively is identical；
Iron core salient pole (17) outer surface is salient pole air gap to the motor air gap of stator (24) iron core inner surface, and permanent magnet (4) outer surface is permanent magnet air gap to the motor air gap of stator (24) iron core inner surface；Salient pole gas length is less than or equal to permanent magnet gas length；Enhanced mouse cage iron core (7) outer surface is mouse cage iron core air gap to the motor air gap of stator (24) iron core inner surface；Mouse cage iron core air gap length is less than or equal to salient pole gas length；
When enhancing magnet steel (11) quantity pasted in enhanced mouse cage iron core (7) is more than four, mouse cage iron core sliver (8) quantity of enhanced rotor very little, can reduce the asynchronous starting performance of enhanced rotor；Number of magnetic poles be quadrupole, the ends of the earth, ten six types of severe debility diseases enhanced rotor be suitable in enhanced mouse cage iron core (7), paste two and strengthen magnet steel (11)；Number of magnetic poles be six types of severe debility disease, 12 poles enhanced rotor be suitable in enhanced mouse cage iron core (7) pasting three strengthening magnet steel (11)；
Non-pole-changing enhanced rotor includes rotating shaft (1), non-pole-changing rotor core components, non-pole-changing rotor cage, rotor permanent magnet body component；Non-pole-changing rotor cage, rotor permanent magnet body component are arranged in non-pole-changing rotor core components, non-pole-changing rotor core components is arranged in the rotating shaft (1) of non-magnet material, or non-pole-changing rotor core components is arranged on magnetic lining (3), is arranged in the rotating shaft (1) of permeability magnetic material every magnetic lining (3)；
Non-pole-changing rotor core components is including at least having non-pole-changing permanent magnetism iron core (32) and enhanced mouse cage iron core (7)；Non-pole-changing permanent magnetism iron core (32) is axially aligned with enhanced mouse cage iron core (7), has a coupling ring (16) between non-pole-changing permanent magnetism iron core (32) and enhanced mouse cage iron core (7)；
Non-pole-changing permanent magnetism iron core (32) is overrided to form by several non-pole-changing permanent magnetism core stampings, and non-pole-changing permanent magnetism iron core Material quality of lamination is permeability magnetic material；Non-pole-changing permanent magnetism iron core (32) ringwise, is axis hole (20) in the middle of non-pole-changing permanent magnetism iron core (32)；Several commutations mouse cage sliver groove (21) uniform of non-pole-changing permanent magnetism iron core (32) radial outside edge, commutation mouse cage sliver groove (21) is open slot or closed slot；
Non-pole-changing rotor cage aluminium die-casting is made, or makes with copper material welding；In the middle of non-pole-changing rotor cage be annular every magnetic end ring (9), two ends are cage ring one (2) and cage ring two (10) respectively；Every magnetic end ring (9) and cage ring two (10) ringwise；Having several mouse cages iron core sliver (8) between magnetic end ring (9) and cage ring two (10), mouse cage iron core sliver (8) is corresponding with mouse cage iron core sliver groove (33) position of enhanced mouse cage iron core (7)；Non-pole-changing rotor cage have between magnetic end ring (9) and cage ring two (10) several auxiliary mouse cage sliver (12), auxiliary mouse cage sliver (12) corresponding with auxiliary mouse cage sliver groove (13) position of enhanced mouse cage iron core (7)；The cage ring one (2) of non-pole-changing rotor cage is ringwise；Having several commutations mouse cage sliver (15) between magnetic end ring (9) and cage ring one (2), commutation mouse cage sliver (15) is corresponding with commutation mouse cage sliver groove (21) position of non-pole-changing permanent magnetism iron core (32)；
Rotor permanent magnet body component is made up of several permanent magnets (4) and several enhancings magnet steel (11)；Permanent magnet (4) is in tile shape；Permanent magnet (4) for non-pole-changing enhanced rotor is pasted onto non-pole-changing permanent magnetism iron core (32) radially-outer surface；Adjacent permanent magnet (4) circular arc external surface opposite pole each other；
Strengthening magnet steel (11) rectangular, strengthening magnet steel (11) is permanent magnet material, strengthens magnet steel (11) and is arranged in enhancing magnet steel groove (35), is two magnetic poles strengthening magnet steel (11) respectively with what strengthen (35) two contacts side surfaces of magnet steel groove；The magnetic pole opposite pole each other of adjacent enhancing magnet steel (11)；Enhancing magnet steel (11) position of non-pole-changing enhanced rotor is axially aligned with the demarcation line of two permanent magnets (4) on non-pole-changing permanent magnetism iron core (32), and permanent magnet (4) pole polarity strengthening magnet steel (11) two ends pole polarity axially aligned with these both sides, demarcation line respectively is identical.
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| CN107659103B (en) * | 2017-11-06 | 2023-10-31 | 上海电机***节能工程技术研究中心有限公司 | Asynchronous starting permanent magnet synchronous motor |
| CN111075837A (en) * | 2020-01-07 | 2020-04-28 | 浙江工业大学 | Three-support double-group control staggered arrangement magnetic pole non-uniform multi-redundancy magnetic bearing system |
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| CN203537202U (en) * | 2013-11-12 | 2014-04-09 | 大连东利伟业环保节能科技有限公司 | Semi-magnetic sheet outer rotor type asynchronous starting permanent-magnet synchronous motor |
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