CN109309415A - Rotor structure, asynchronous starting synchronous magnetic resistance motor and compressor - Google Patents
Rotor structure, asynchronous starting synchronous magnetic resistance motor and compressor Download PDFInfo
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- CN109309415A CN109309415A CN201811446032.9A CN201811446032A CN109309415A CN 109309415 A CN109309415 A CN 109309415A CN 201811446032 A CN201811446032 A CN 201811446032A CN 109309415 A CN109309415 A CN 109309415A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
- H02K19/14—Synchronous motors having additional short-circuited windings for starting as asynchronous motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Synchronous Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention provides a kind of rotor structure, asynchronous starting synchronous magnetic resistance motor and compressors.Rotor structure, it include: rotor body, rotor body (10), offered holding tank (11) on the rotor body (10), the holding tank (11) be it is multiple, formed between the holding tank (11) of adjacent two cross q axis first magnetic flux path (12) width be D3, wherein, D3 > K, wherein K is the width of the stator tooth of stator core.The width for crossing first magnetic flux path 12 of q axis is greater than the width of stator tooth, it avoids magnet passage from being saturated, guarantees that magnetic flux is efficiently entering stator, the motor with the rotor structure is enabled to generate bigger reluctance torque, the output torque and efficiency for increasing motor, to improve the performance of motor.
Description
Technical field
The present invention relates to motor device technical fields, in particular to a kind of rotor structure, asynchronous starting synchronous reluctance
Motor and compressor.
Background technique
Asynchronous starting synchronous magnetic resistance motor combines the design feature of induction machine and reluctance motor, is incuded by mouse cage and is produced
Raw torque, which is realized, to be started, and is generated reluctance torque by inductor rotor gap and is realized permanent revolving speed operation, can directly connect power supply realization
Starting operation.Asynchronous starting synchronous magnetic resistance motor, without rare earth permanent-magnetic material, is also not present compared with asynchronous starting and permanent magnet motor
Demagnetization problem, motor cost is low, good reliability.
In the prior art, the q axis in the direction that magnetic flux easily flows through is set on rotor and is difficult to the side flowed through as magnetic flux
To d axis at raised at least a pair of of the slit portion of the magnetic pole at 90 degree the two poles of the earth, and configuration is in the multiple of the peripheral side of slit portion
Slot portion fills conductive material in slit portion and aforementioned slot portion.Slit portion is made for the shape of straight line, and slot portion is along circle
Circumferential direction radially configures at equal intervals.Since slot portion radially configures at equal intervals, so that the magnetic flux side between slot portion
To vertical rotor surface Radial Flow.Slot portion hinders the circulation of magnetic flux q axis direction, the especially slot portion closer to d axis, q
Axis magnetic flux obstruction is more obvious, and the circulation of d axis magnetic flux is more smooth, therefore d axis, q axis flux amount difference are unobvious, and salient pole ratio is not
Greatly, motor output torque and efficiency cannot be met the requirements.Further, since slit portion is made for the shape of straight line, rotor
There is axis hole at center, causes d axis internal rotor space very big, slit portion is not arranged using internal rotor space well to increase
The salient pole ratio of big motor, the problems such as causing motor overall performance low.
Summary of the invention
The main purpose of the present invention is to provide a kind of rotor structure, asynchronous starting synchronous magnetic resistance motor and compressor, with
Solve the problems, such as that motor performance is low in the prior art.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of rotor structure, comprising: rotor sheet
Body, offers holding tank on rotor body, holding tank be it is multiple, what is formed between two adjacent holding tanks crosses the first of q axis
The width of magnetic flux path is D3, wherein D3 > K, wherein K is the width of the stator tooth of stator core.
Further, along the arranged circumferentially spaced of rotor body, holding tank extends multiple holding tanks along q axis direction, adjacent
The first magnetic flux path is formed between two holding tanks, the flow direction of the first magnetic flux path is parallel with q axis direction, and the first magnetic
The flow direction of circulation passage and d axis are perpendicular.
Further, rotor body is additionally provided with magnetic barrier slit slot, and the extension of q axis direction, magnetic barrier are prolonged in the both ends of magnetic barrier slit slot
The first end of slit slot is corresponding with a holding tank in multiple holding tanks, which hinders the second end and multiple receivings of slit slot
Another holding tank in slot is corresponding, is formed between the magnetic barrier slit slot of holding tank corresponding thereto every bridge.
Further, magnetic barrier slit slot is multiple, and multiple magnetic barrier slit slots are positioned apart from along d axis direction, two neighboring magnetic
The second magnetic flux path is formed between barrier slit slot, it is corresponding with two holding tanks that each magnetic hinders slit slot.
Further, multiple magnetic barrier slit slots are symmetrically arranged and/or multiple receivings about at least one of q axis and d axis
Slot is symmetrically arranged about at least one of q axis and d axis.
Further, groove is additionally provided on the outer peripheral surface of rotor body, groove is located at the appearance of the d axis direction of rotor body
On face.
Further, groove be two, two grooves be arranged in rotor body about on the axisymmetric outer peripheral surface of q.
Further, the depth capacity of the radial direction along rotor body of groove is H, wherein 0.5 δ≤H < δ, wherein δ
Width of air gap between rotor body and stator core.
Further, offer axis hole in the middle part of rotor body, groove along the both ends that q axis direction extends to the hole heart of axis hole
Between line formed central angle be α, wherein 20 °≤α≤45 °.
Further, the first magnetic flux path formed between two adjacent holding tanks, magnetic corresponding with two holding tanks
The second magnetic flux path formed between barrier slit slot forms the magnetic circuit of connection, and the width of the first magnetic flux path is D1, the second magnetic
The minimum widith of circulation passage is D2, wherein D1 >=D2.
Further, axis hole and magnetic barrier slit slot are offered in the middle part of rotor body, hole wall to the magnetic of axis hole hinders slit slot
The minimum range of cell wall is D4, wherein 0.5 × D3≤D4.
Further, the cell wall of holding tank to rotor body outer peripheral surface minimum range be L1, wherein 0.5 δ≤L1 < δ,
And/or every bridge minimum widith be L2, wherein the 0.5 δ≤width of air gap of L2 < δ, δ between rotor body and stator core.
Further, offer axis hole in the middle part of rotor body, the width of multiple magnetic barrier slit slots and be m, the hole of axis hole
Wall to groove cell wall minimum range be m6, wherein m/m6=Q, 0.3≤Q≤0.5.
Further, the bottom of groove is in that the bottom of the cambered surface or groove that are recessed towards the geometric center of rotor body is wrapped
At least one is included to face directly.
Further, holding tank is for accommodating conductive non-magnetic material.
Further, the opposite two side walls of holding tank extended along q axis direction are parallel with q axis.
According to another aspect of the present invention, a kind of rotor structure is provided, comprising: rotor body opens up on rotor body
Have a holding tank, holding tank be it is multiple, multiple holding tanks prolong along the arranged circumferentially spaced of rotor body, holding tank along q axis direction
It stretches, forms the first magnetic flux path between two neighboring holding tank, the flow direction of the first magnetic flux path is parallel with q axis direction,
And first magnetic flux path flow direction and d axis it is perpendicular.
Further, rotor body is additionally provided with magnetic barrier slit slot, and the extension of q axis direction, magnetic barrier are prolonged in the both ends of magnetic barrier slit slot
The first end of slit slot is corresponding with a holding tank in multiple holding tanks, which hinders the second end and multiple receivings of slit slot
Another holding tank in slot is corresponding, is formed between the magnetic barrier slit slot of holding tank corresponding thereto every bridge.
Further, magnetic barrier slit slot is multiple, and multiple magnetic barrier slit slots are positioned apart from along d axis direction, two neighboring magnetic
The second magnetic flux path is formed between barrier slit slot, it is corresponding with two holding tanks that each magnetic hinders slit slot.
Further, multiple magnetic barrier slit slots are symmetrically arranged and/or multiple receivings about at least one of q axis and d axis
Slot is symmetrically arranged about at least one of q axis and d axis.
Further, groove is additionally provided on the outer peripheral surface of rotor body, groove is located at the appearance of the d axis direction of rotor body
On face.
Further, groove be two, two grooves be arranged in rotor body about on the axisymmetric outer peripheral surface of q.
Further, the depth capacity of the radial direction along rotor body of groove is H, wherein 0.5 δ≤H < δ, wherein δ
Width of air gap between rotor body and stator core.
Further, offer axis hole in the middle part of rotor body, groove along the both ends that q axis direction extends to the hole heart of axis hole
Between line formed central angle be α, wherein 20 °≤α≤45 °.
Further, the first magnetic flux path formed between two adjacent holding tanks, magnetic corresponding with two holding tanks
The second magnetic flux path formed between barrier slit slot forms the magnetic circuit of connection, and the width of the first magnetic flux path is D1, the second magnetic
The minimum widith of circulation passage is D2, wherein D1 >=D2.
Further, the width of the first magnetic flux path of q axis excessively formed between two adjacent holding tanks is D3, wherein
D3 > K, wherein K is the width of the stator tooth of stator core.
Further, axis hole and magnetic barrier slit slot are offered in the middle part of rotor body, hole wall to the magnetic of axis hole hinders slit slot
The minimum range of cell wall is D4, wherein 0.5 × D3≤D4.
Further, the cell wall of holding tank to rotor body outer peripheral surface minimum range be L1, wherein 0.5 δ≤L1 < δ,
And/or every bridge minimum widith be L2, wherein the 0.5 δ≤width of air gap of L2 < δ, δ between rotor body and stator core.
Further, offer axis hole in the middle part of rotor body, the width of multiple magnetic barrier slit slots and be m, the hole of axis hole
Wall to groove cell wall minimum range be m6, wherein m/m6=Q, 0.3≤Q≤0.5.
Further, the bottom of groove is in that the bottom of the cambered surface or groove that are recessed towards the geometric center of rotor body is wrapped
At least one is included to face directly.
Further, holding tank is for accommodating conductive non-magnetic material.
Further, the opposite two side walls of holding tank extended along q axis direction are parallel with q axis.
According to another aspect of the present invention, a kind of asynchronous starting synchronous magnetic resistance motor, including rotor structure, rotor are provided
Structure is above-mentioned rotor structure.
Further, asynchronous starting synchronous magnetic resistance motor is asynchronous starting synchronous reluctance bipolar machine, the synchronous magnetic of asynchronous starting
The number of stator slots for hindering motor is 24.
According to another aspect of the present invention, a kind of compressor, including rotor structure are provided, rotor structure is above-mentioned turns
Minor structure.
It applies the technical scheme of the present invention, the width for crossing the first magnetic flux path 12 of q axis is greater than the width of stator tooth, avoids
Magnet passage saturation, guarantees that magnetic flux is efficiently entering stator.The motor with the rotor structure to generate bigger magnetic resistance to turn
Square, increases the output torque and efficiency of motor, to improve the performance of motor.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the first embodiment of rotor structure according to the present invention；
Fig. 2 shows the structural schematic diagrams with the embodiment of motor stator assembly of rotor structure according to the present invention；
Fig. 3 shows the structural schematic diagram of the second embodiment of rotor structure according to the present invention；
Fig. 4 shows the structural schematic diagram of the 3rd embodiment of rotor structure according to the present invention；
Fig. 5 shows the structural schematic diagram of the fourth embodiment of rotor structure according to the present invention；
Fig. 6 shows the structural schematic diagram of the 5th embodiment of rotor structure according to the present invention；
Fig. 7 shows the torque curve comparison diagram of motor according to the present invention Yu motor in the prior art；
Fig. 8 shows the different magnetic barrier of motor according to the present invention than the relational graph with motor output torque.
Wherein, the above drawings include the following reference numerals:
10, rotor body；11, holding tank；12, the first magnetic flux path；13, magnetic hinders slit slot；14, the second magnetic flux path；
20, every bridge；
30, groove；
40, axis hole；
50, stator core；51, stator tooth；
60, cast aluminium end ring.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing
It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the art used in this way
Language is interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them
It states.
In conjunction with shown in Fig. 1 to Fig. 8, according to an embodiment of the invention, providing a kind of rotor structure.
Specifically, as shown in Figure 1, rotor structure includes rotor body 10.Holding tank 11 is offered on rotor body 10, is held
Slot 11 of receiving is multiple, the width of first magnetic flux path 12 of q axis excessively formed between the holding tank 11 of adjacent two
For D3, wherein D3 > K, wherein K is the width of the stator tooth of stator core.
In the present embodiment, the width for crossing first magnetic flux path 12 of q axis is greater than the width of stator tooth, avoids magnetic flux
Road saturation, guarantees that magnetic flux is efficiently entering stator.Enable the motor with the rotor structure to generate bigger reluctance torque, increases
Add the output torque and efficiency of motor, to improve the performance of motor.
Multiple holding tanks 11 extend along the arranged circumferentially spaced of rotor body 10, holding tank 11 along q axis direction, and adjacent two
The first magnetic flux path 12 is formed between a holding tank 11, the flow direction of the first magnetic flux path 12 is parallel with q axis direction (as schemed
In 1 shown in f1), and the flow direction of the first magnetic flux path 12 and d axis are perpendicular.By being arranged to holding tank along q axis direction
Set-up mode so that the without hindrance circulation of q axis flux, can effectively increase the difference of the magnetic flux between d axis, q axis, so that tool
Bigger reluctance torque can be generated by having the motor of the rotor structure, increase the output torque and efficiency of motor, to improve
The performance of motor.
Wherein, rotor body 10 is additionally provided with magnetic barrier slit slot 13.The extension of q axis direction is prolonged at the both ends of magnetic barrier slit slot 13,
The first end that magnetic hinders slit slot 13 is corresponding with a holding tank 11 in multiple holding tanks 11, which hinders the second of slit slot 13
End is corresponding with another holding tank 11 in multiple holding tanks 11, between the magnetic barrier slit slot 13 of holding tank 11 corresponding thereto
It is formed with every bridge 20.Wherein, " correspondence " herein referred to are as follows: as shown in Figure 1, the of the left side positioned at d axis of magnetic barrier slit slot 13
One end is disposed adjacent with one end of the holding tank 11 in the left side for being located at d axis, wherein magnetic hinders the first end and the receiving of slit slot 13
Have between slot 11 every bridge 20.Magnetic hinders the second end and the holding tank on the right side for being located at d axis on the right side positioned at d axis of slit slot 13
11 one end is disposed adjacent, and is likewise formed between the second end of magnetic barrier slit slot 13 and the holding tank 11 on right side every bridge 20,
Setting can equally effectively improve rotor body in the magnetic resistance of d axis direction in this way.
Preferably, magnetic barrier slit slot 13 is multiple, and multiple magnetic barrier slit slots 13 are positioned apart from along d axis direction, adjacent two
The second magnetic flux path 14 is formed between a magnetic barrier slit slot 13, it is corresponding with two holding tanks 11 that each magnetic hinders slit slot 13.
Setting can further improve rotor body in the magnetic resistance of d axis direction in this way, then increase the magnetic flux between q axis and d axis
The difference of amount.
Specifically, multiple magnetic barrier slit slots 13 are axisymmetrically arranged about q, and multiple magnetic barrier slit slots 13 are also about d axis pair
Claim ground setting, multiple holding tanks 11 are axisymmetrically arranged about q, and multiple holding tanks 11 are also axisymmetrically arranged about d.
In order to further improve the magnetic resistance of the d axis direction of rotor body, also set up on the outer peripheral surface of the rotor body 10
Fluted 30.Groove 30 is set on the outer surface of rotor d axis direction, d axis can be arranged in the geometry of groove 30
At the heart.
Preferably, as depicted in figs. 1 and 2, groove 30 be two, two grooves 30 be arranged in rotor body 10 about q
On axisymmetric outer peripheral surface.Wherein, the depth capacity of the radial direction along rotor body 10 of groove 30 is H, wherein 0.5 δ≤
H < δ, wherein width of air gap of the δ between rotor body 10 and stator core 50.Further, the middle part of rotor body 10 is opened
Equipped with axis hole 40, groove 30 is α along the both ends that q axis direction extends to the central angle that line is formed between the hole heart of axis hole 40,
Wherein, 20 °≤α≤45 °.
The first magnetic flux path 12 formed between two adjacent holding tanks 11, magnetic barrier corresponding with two holding tanks 11
The second magnetic flux path 14 formed between slit slot 13 forms the magnetic circuit (as shown in figure 1 shown in f1) of connection, and the first magnetic flux path
12 width is D1, and the minimum widith of the second magnetic flux path 14 is D2, wherein D1 >=D2.
The minimum range that the hole wall of axis hole 40 to magnetic hinders the cell wall of slit slot 13 is D4, wherein 0.5 × D3≤D4.
The cell wall of holding tank 11 to rotor body 10 outer peripheral surface minimum range be L1, wherein 0.5 δ≤L1 < δ, every
The minimum widith of bridge 20 is L2 (not shown), wherein 0.5 δ≤L2 < δ, δ is between rotor body 10 and stator core
Width of air gap.The width of multiple magnetic barrier slit slots 13 and be m, the minimum range of the cell wall of the hole wall of axis hole 40 to groove 30 is
M6, wherein m/m6=Q, 0.3≤Q≤0.5.As shown in Figure 1, being located at below q axis, there are five magnetic to hinder slit slot 13, their width
Degree is respectively m1, m2, m3, m4 and m5, wherein m=m1+m2+m3+m4+m5.
As shown in Figures 3 to 6, the arc towards the geometric center recess of rotor body 10 can be set into the bottom of groove 30
Face.Certainly, the bottom of groove 30 also can be set into faces directly including at least one.Wherein, if the bottom of groove 30 includes extremely
Few two when facing directly, wherein the two neighboring angle faced directly can be right angle, are also possible to obtuse angle.Preferably, holding tank 11 is used
In accommodating conductive non-magnetic material as shown in figure 1 shown in f2.Wherein, as shown in Figure 1, the phase of holding tank extended along q axis direction
Pair two side walls (1,2) it is parallel with q axis.
Rotor structure in above-described embodiment can be also used for motor device technical field, i.e., another party according to the present invention
Face provides a kind of asynchronous starting synchronous magnetic resistance motor.The motor includes rotor structure, and rotor structure is in above-described embodiment
Rotor structure.Rotor structure includes rotor body 10.Offer holding tank 11 on rotor body 10, holding tank 11 be it is multiple, it is more
A holding tank 11 extends along the arranged circumferentially spaced of rotor body 10, holding tank 11 along q axis direction, two neighboring holding tank 11
Between form the first magnetic flux path 12, the flow direction of the first magnetic flux path 12 is parallel with q axis direction, crosses described the of q axis
The width of one magnetic flux path 12 is greater than the width of stator tooth, and the flow direction of the first magnetic flux path 12 and d axis are perpendicular.Its
In, which is asynchronous starting synchronous reluctance bipolar machine, and asynchronous starting synchronous magnetic resistance motor is determined
Pilot trench number is 24.
In the present embodiment, by the way that holding tank is arranged to the set-up mode along q axis direction, so that q axis flux is without hindrance
Circulation, can effectively increase the difference of the magnetic flux between d axis, q axis, and the motor with the rotor structure is generated more
Big reluctance torque, increases the output torque and efficiency of motor, to improve the performance of motor.
Specifically, this application provides a kind of asynchronous startings to synchronize dynamic magnetic resistance motor rotor structure, solves asynchronous machine effect
Rate is low, the low problem of revolving speed, realizes the operation of motor effective constant revolving speed.Using the rotor structure, permanent magnet synchronous motor cost is solved
Height, the low problem of reliabilities such as magnet demagnetization.The rotor structure does not use rare-earth magnet and drive control device, can effectively drop
Low manufacturing cost can be realized across-the-line starting and synchronized dynamic reluctance motor using the rotor of the structure.
Design is combined with magnetic barrier by holding tank, holding tank generates induction torque and realizes starting, and is dragged in synchronization, passes through magnetic
The reluctance torque that barrier effect generates realizes synchronism stability operation.
By the way that holding tank is arranged to horizontal mode in q axis direction, so that the without hindrance circulation of q axis flux, d axis magnetic
Logical barrier completely, while groove is set in d axis rotor surface, d axis magnetic resistance is further increased, the difference of d axis, q axis flux amount is increased,
So that the d axis direction in rotor generates bigger reluctance torque, increase motor power output and efficiency.
Hindered by reasonable magnetic and holding tank designs, should guaranteed reasonable magnetic barrier accounting design, guarantee that magnetic hinders it again
Between magnetic flux path there can be no supersaturation, hinder magnetic flux flows, efficiently use rotor space, reached increase as far as possible d axis,
The effect of the difference of q axis flux amount.
The motor is made of the stator core with winding and rotor, and rotor is by rotor core and rotor with specific structure
The cast aluminium end ring 60 at iron core both ends forms, and multiple holding tanks and pairs of magnetic barrier slit slot, Yi Jihe are provided on rotor core
The axis hole of shaft cooperation, two sidelines are parallel with q axis up and down for holding tank.Groove is arranged in the d axis outer surface of rotor core.Holding tank
Hinder with magnetic and cooperate, form magnetic flux barrier in d axis direction, forms magnetic flux path in q axis direction, holding tank and magnetic barrier are about d
Axis or q axial symmetry.
Two sidelines are parallel with q axis up and down for holding tank, and purpose makes the without hindrance circulation of q axis flux, and d axis magnetic flux hinders completely
Every the difference of increase d axis, q axis flux amount generates bigger reluctance torque, increases motor power output and efficiency.
Groove is arranged in the d axis outer surface of rotor core, and angle shared by the circular arc of groove respective rotor periphery is α, wherein 20 °
≤α≤45°.Groove depth capacity on d axis is H, wherein 0.5 δ≤H < δ, groove shapes can be multiplicity.It can be round
Arc, rectangle, inverted trapezoidal etc..It is to increase d axis air-gap reluctance that purpose, which is arranged such, reduces d axis magnetic flux, increases salient pole ratio, is increased
Motor power output.
The conductive non-magnetic material such as aluminium is inserted in all holding tanks, is formed cast aluminium, is passed through the casting at rotor core both ends
All holding tanks are connected to by aluminium end ring 60, form mouse cage, and mouse cage, which generates induction torque and starts motor and motor pulls in, to be turned
Speed operation.
The distance of holding tank to rotor core exterior surface is L1, and the distance of holding tank to corresponding magnetic barrier is L2, and L1, L2 are full
Foot: 0.5 δ≤L1 < δ, 0.5 δ≤L2 < δ, wherein width of air gap of the δ between stator core and rotor core, so set,
Rotor field leakage field can be reduced, promote electric efficiency.
Magnetic flux path width D 1 between two neighboring holding tank be greater than or be equal to corresponding adjacent magnetic barrier slit slot it
Between the width D 2 of minimum magnetic flux path that is formed, it may be assumed that D1 >=D2, its purpose is to guarantee between aluminium slot there are enough width,
Magnetic field saturation is avoided the occurrence of, the magnetic flux circulation in channel between magnetic barrier is influenced.
Magnetic flux path and q overlapping of axles above and below q axis between first holding tank, magnetic flux path width are D3, D3 and stator
The relationship of the wide K of tooth meets: D3 > K, the i.e. width in q axis flux channel are greater than the width of stator tooth, main the purpose is to guarantee
Magnetic circuit channel is not in saturation, while magnetic flux being made to be efficiently entering stator tooth, forms torque.
The ratio between the width (m1+m2+m3+m4+m5) of all magnetic barrier slits and axis hole to the width (m6) of rotor outer periphery are Q,
That is (m1+m2+m3+m4+m5)/m6=Q ∈ [0.3-0.5], it is therefore an objective to select reasonable magnetic barrier accounting, both guarantee enough magnetic barriers
Width effectively hinders d axis magnetic flux, and guarantees reasonable magnetic flux path, prevents magnetic flux supersaturation, increases q axis flux, increases
Motor salient pole ratio.
The shaft of the motor can use magnetic conductive material；Non-magnet material can also be used in shaft, then requires shaft at this time
The minimum widith that hinders to both sides magnetic of axis hole meet following require: 2*D4 >=D3, wherein D4 is the minimum widith that shaft hinders to magnetic,
The purpose is to prevent the channel D4 from magnetic flux supersaturation occur, magnetic flux flows are hindered.
The motor can be also used for compressor apparatus technical field, according to another aspect of the present invention, provide a kind of pressure
Contracting machine, including rotor structure, rotor structure are the rotor structure in above-described embodiment.Rotor structure includes rotor body 10.Turn
Holding tank 11 is offered on sub- ontology 10, holding tank 11 is q axis excessively that are multiple, being formed between the holding tank 11 of adjacent two
First magnetic flux path 12 width be D3, wherein D3 > K, wherein K be stator core stator tooth width.It is multiple
Holding tank 11 is arranged circumferentially spaced along rotor body 10, holding tank 11 along q axis direction extend, two neighboring holding tank 11 it
Between form the first magnetic flux path 12, the flow direction of the first magnetic flux path 12 is parallel with q axis direction (as shown in figure 1 shown in f1),
And first magnetic flux path 12 flow direction and d axis it is perpendicular.
In the present embodiment, by the way that holding tank is arranged to the set-up mode along q axis direction, so that q axis flux is without hindrance
Circulation, can effectively increase the difference of the magnetic flux between d axis, q axis, and the motor with the rotor structure is generated more
Big reluctance torque, increases the output torque and efficiency of motor, to improve the performance of motor.Using the pressure of the rotor structure
Contracting machine, it is high-efficient since motor power output is big, therefore can provide a kind of high-performance constant speed compressor.
Fig. 7 is that asynchronous in the present embodiment synchronizes dynamic reluctance motor and prior art motor torque curve compares
Figure, under same stator scheme and electric current, the technical solution motor power output of the application will motor than in the prior art it is high by 15%, electricity
Machine power output increases, and electric efficiency is promoted.
Fig. 8 show in embodiment different magnetic barriers than and motor power output relationship, motor power output is maximum when magnetic barrier is than being 0.42,
Than too big or too small, motor power output can decline magnetic barrier, and suitable magnetic barrier compares motor power output and is affected.
In above-mentioned optimal embodiment, the d axis outer surface groove of rotor core is removed, i.e., rotor outer surface is full circle,
Holding tank is used, so that the without hindrance circulation of q axis flux, d axis magnetic flux obstructs completely, increases the difference of d axis, q axis flux amount, can also be with
Obtain technical effect good than the motor of the prior art.
Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation
Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary
Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description
Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment
Other embodiments are closed to realize that this feature, structure or feature are also fallen within the scope of the present invention.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (35)
1. a kind of rotor structure characterized by comprising
Rotor body (10) offers holding tank (11) on the rotor body (10), the holding tank (11) be it is multiple, it is adjacent
Two holding tanks (11) between formed cross q axis the first magnetic flux path (12) width be D3, wherein D3 > K,
In, K is the width of the stator tooth 51 of stator core.
2. rotor structure according to claim 1, which is characterized in that multiple holding tanks (11) are along the rotor body
(10) arranged circumferentially spaced, the holding tank (11) shape between q axis direction extension, the two neighboring holding tank (11)
At the first magnetic flux path (12), the flow direction of first magnetic flux path (12) is parallel with q axis direction, and first magnetic
The flow direction and d axis of circulation passage (12) are perpendicular.
3. rotor structure according to claim 1, which is characterized in that the rotor body (10) is additionally provided with magnetic barrier slit
The extension of q axis direction is prolonged at slot (13), the both ends of magnetic barrier slit slot (13), the first end of magnetic barrier slit slot (13) with it is multiple
A holding tank (11) in the holding tank (11) is corresponding, the second end of described magnetic barrier slit slot (13) with it is multiple
Another described holding tank (11) in the holding tank (11) is corresponding, the magnetic of the holding tank (11) corresponding thereto
It is formed between barrier slit slot (13) every bridge (20).
4. rotor structure according to claim 3, which is characterized in that magnetic barrier slit slot (13) is multiple, Duo Gesuo
It states magnetic barrier slit slot (13) to be positioned apart from along d axis direction, forms the second magnetic between two neighboring magnetic barrier slit slot (13)
Circulation passage (14), each described magnetic barrier slit slot (13) are corresponding with two holding tank (11).
5. rotor structure according to claim 4, which is characterized in that
Multiple magnetic barriers slit slot (13) are symmetrically arranged about at least one of q axis and d axis, and/or
Multiple holding tanks (11) are symmetrically arranged about at least one of q axis and d axis.
6. rotor structure according to claim 4, which is characterized in that also set up on the outer peripheral surface of the rotor body (10)
Fluted (30), the groove (30) are located on the outer surface of the d axis direction of the rotor body (10).
7. rotor structure according to claim 6, which is characterized in that the groove (30) is two, two grooves
(30) it is arranged in the rotor body (10) about on the axisymmetric outer peripheral surface of q.
8. rotor structure according to claim 6, which is characterized in that the groove (30) along the rotor body (10)
The depth capacity of radial direction be H, wherein 0.5 δ≤H < δ, wherein δ be the rotor body (10) and stator core it
Between width of air gap.
9. rotor structure according to claim 6, which is characterized in that offer axis hole in the middle part of the rotor body (10)
(40), the center of circle of the groove (30) formed along the both ends of q axis direction extension to line between the hole heart of the axis hole (40)
Angle is α, wherein 20 °≤α≤45 °.
10. rotor structure according to claim 4, which is characterized in that shape between the holding tank (11) of adjacent two
At first magnetic flux path (12), shape between magnetic barrier slit slot (13) corresponding with this two holding tank (11)
At second magnetic flux path (14) formed connection magnetic circuit, and the width of first magnetic flux path (12) be D1, it is described
The minimum widith of second magnetic flux path (14) is D2, wherein D1 >=D2.
11. rotor structure according to claim 1, which is characterized in that offer axis in the middle part of the rotor body (10)
Hole (40) and magnetic barrier slit slot (13), the hole wall of the axis hole (40) hinder the minimum range of the cell wall of slit slot (13) to the magnetic
For D4, wherein 0.5 × D3≤D4.
12. rotor structure according to claim 3, which is characterized in that
The minimum range of outer peripheral surface of the cell wall of the holding tank (11) to the rotor body (10) is L1, wherein 0.5 δ≤
L1 < δ, and/or
The minimum widith every bridge (20) is L2, wherein 0.5 δ≤L2 < δ, δ is the rotor body (10) and stator core
Between width of air gap.
13. rotor structure according to claim 6, which is characterized in that offer axis in the middle part of the rotor body (10)
Hole (40), the width of multiple magnetic barriers slit slot (13) and be m, the hole wall of the axis hole (40) to the groove (30)
The minimum range of cell wall is m6, wherein m/m6=Q, 0.3≤Q≤0.5.
14. rotor structure according to claim 6, which is characterized in that
The bottom of the groove (30) is in the cambered surface or the groove (30) towards the geometric center recess of rotor body (10)
Bottom include that at least one is faced directly.
15. rotor structure according to claim 1, which is characterized in that the holding tank (11) is not led for accommodating conduction
The material of magnetic.
16. rotor structure according to claim 1, which is characterized in that the holding tank (11) along q axis direction extend
Opposite two side walls are parallel with q axis.
17. a kind of rotor structure characterized by comprising
Rotor body (10) offers holding tank (11) on the rotor body (10), the holding tank (11) be it is multiple, it is multiple
The holding tank (11) extends along the arranged circumferentially spaced of the rotor body (10), the holding tank (11) along q axis direction,
It is formed the first magnetic flux path (12) between the two neighboring holding tank (11), the flow direction of first magnetic flux path (12)
It is parallel with q axis direction, and the flow direction of first magnetic flux path (12) and d axis are perpendicular.
18. rotor structure according to claim 17, which is characterized in that it is narrow that the rotor body (10) is additionally provided with magnetic barrier
The extension of q axis direction is prolonged at slot (13), the both ends of magnetic barrier slit slot (13), the first end of magnetic barrier slit slot (13) and more
A holding tank (11) in a holding tank (11) is corresponding, the second end of described magnetic barrier slit slot (13) and more
Another described holding tank (11) in a holding tank (11) is corresponding, the holding tank (11) corresponding thereto described
It is formed between magnetic barrier slit slot (13) every bridge (20).
19. rotor structure according to claim 18, which is characterized in that magnetic barrier slit slot (13) be it is multiple, it is multiple
Magnetic barrier slit slot (13) is positioned apart from along d axis direction, forms second between two neighboring magnetic barrier slit slot (13)
Magnetic flux path (14), each described magnetic barrier slit slot (13) are corresponding with two holding tank (11).
20. rotor structure according to claim 19, which is characterized in that
Multiple magnetic barriers slit slot (13) are symmetrically arranged about at least one of q axis and d axis, and/or
Multiple holding tanks (11) are symmetrically arranged about at least one of q axis and d axis.
21. rotor structure according to claim 19, which is characterized in that also set on the outer peripheral surface of the rotor body (10)
It is equipped with groove (30), the groove (30) is located on the outer surface of the d axis direction of the rotor body (10).
22. rotor structure according to claim 21, which is characterized in that the groove (30) is two, and two described recessed
Slot (30) is arranged in the rotor body (10) about on the axisymmetric outer peripheral surface of q.
23. rotor structure according to claim 21, which is characterized in that the groove (30) along the rotor body
(10) depth capacity of radial direction is H, wherein 0.5 δ≤H < δ, wherein δ is the rotor body (10) and stator iron
Width of air gap between core.
24. rotor structure according to claim 21, which is characterized in that offer axis in the middle part of the rotor body (10)
Hole (40), the circle of the groove (30) formed along the both ends of q axis direction extension to line between the hole heart of the axis hole (40)
Heart angle is α, wherein 20 °≤α≤45 °.
25. rotor structure according to claim 19, which is characterized in that shape between the holding tank (11) of adjacent two
At first magnetic flux path (12), shape between magnetic barrier slit slot (13) corresponding with this two holding tank (11)
At second magnetic flux path (14) formed connection magnetic circuit, and the width of first magnetic flux path (12) be D1, it is described
The minimum widith of second magnetic flux path (14) is D2, wherein D1 >=D2.
26. rotor structure according to claim 1, which is characterized in that shape between the holding tank (11) of adjacent two
At cross q axis first magnetic flux path (12) width be D3, wherein D3 > K, wherein K be stator core stator tooth
Width.
27. rotor structure according to claim 26, which is characterized in that offer axis in the middle part of the rotor body (10)
Hole (40) and magnetic barrier slit slot (13), the hole wall of the axis hole (40) hinder the minimum range of the cell wall of slit slot (13) to the magnetic
For D4, wherein 0.5 × D3≤D4.
28. rotor structure according to claim 18, which is characterized in that
The minimum range of outer peripheral surface of the cell wall of the holding tank (11) to the rotor body (10) is L1, wherein 0.5 δ≤
L1 < δ, and/or
The minimum widith every bridge (20) is L2, wherein 0.5 δ≤L2 < δ, δ is the rotor body (10) and stator core
Between width of air gap.
29. rotor structure according to claim 21, which is characterized in that offer axis in the middle part of the rotor body (10)
Hole (40), the width of multiple magnetic barriers slit slot (13) and be m, the hole wall of the axis hole (40) to the groove (30)
The minimum range of cell wall is m6, wherein m/m6=Q, 0.3≤Q≤0.5.
30. rotor structure according to claim 21, which is characterized in that
The bottom of the groove (30) is in the cambered surface or the groove (30) towards the geometric center recess of rotor body (10)
Bottom include that at least one is faced directly.
31. rotor structure according to claim 17, which is characterized in that the holding tank (11) is not led for accommodating conduction
The material of magnetic.
32. rotor structure according to claim 17, which is characterized in that the holding tank (11) extends along q axis direction
Opposite two side walls it is parallel with q axis.
33. a kind of asynchronous starting synchronous magnetic resistance motor, including rotor structure, which is characterized in that the rotor structure is wanted for right
Rotor structure described in asking any one of 1 to 32.
34. asynchronous starting synchronous magnetic resistance motor according to claim 33, which is characterized in that the synchronous magnetic of the asynchronous starting
Resistance motor is asynchronous starting synchronous reluctance bipolar machine, and the number of stator slots of the asynchronous starting synchronous magnetic resistance motor is 24.
35. a kind of compressor, including rotor structure, which is characterized in that the rotor structure is any one of claims 1 to 32
The rotor structure.
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| CN2017112443625 | 2017-11-30 | ||
| CN201711244362.5A CN108011459A (en) | 2017-11-30 | 2017-11-30 | Rotor structure, asynchronous starting synchronous magnetic resistance motor and compressor |
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| CN109309415A true CN109309415A (en) | 2019-02-05 |
| CN109309415B CN109309415B (en) | 2020-11-10 |
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| CN201811446006.6A Active CN109309414B (en) | 2017-11-30 | 2018-11-29 | Rotor structure, asynchronous starting synchronous reluctance motor and compressor |
| CN201811446032.9A Active CN109309415B (en) | 2017-11-30 | 2018-11-29 | Rotor structure, asynchronous starting synchronous reluctance motor and compressor |
| CN201811446031.4A Active CN109378956B (en) | 2017-11-30 | 2018-11-29 | Rotor structure, asynchronous starting synchronous reluctance motor and compressor |
| CN201811446039.0A Active CN109510345B (en) | 2017-11-30 | 2018-11-29 | Rotor structure, asynchronous starting synchronous reluctance motor and compressor |
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| CN201811446006.6A Active CN109309414B (en) | 2017-11-30 | 2018-11-29 | Rotor structure, asynchronous starting synchronous reluctance motor and compressor |
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| CN201811446039.0A Active CN109510345B (en) | 2017-11-30 | 2018-11-29 | Rotor structure, asynchronous starting synchronous reluctance motor and compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112104180A (en) * | 2020-08-21 | 2020-12-18 | 石镇德 | Asynchronous starting permanent magnet auxiliary type synchronous reluctance motor |
| WO2020253200A1 (en) * | 2019-06-19 | 2020-12-24 | 珠海格力电器股份有限公司 | Self-starting synchronous reluctance motor and compressor having same |
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| CN108711968A (en) * | 2018-07-13 | 2018-10-26 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN108768015B (en) * | 2018-07-20 | 2020-04-17 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN110138116B (en) * | 2019-06-19 | 2020-10-02 | 珠海格力电器股份有限公司 | Rotor structure of direct-start synchronous reluctance motor, motor and compressor |
| CN112713741A (en) * | 2020-12-21 | 2021-04-27 | 中车永济电机有限公司 | Self-starting three-phase synchronous reluctance motor |
| CN112968551A (en) * | 2021-01-26 | 2021-06-15 | 珠海格力电器股份有限公司 | Rotor assembly and self-starting permanent magnet synchronous reluctance motor |
| CN112968554B (en) * | 2021-01-26 | 2022-09-09 | 珠海格力电器股份有限公司 | Rotor assembly and self-starting permanent magnet synchronous reluctance motor |
| CN112968555B (en) * | 2021-01-26 | 2023-02-28 | 珠海格力电器股份有限公司 | Rotor assembly and self-starting permanent magnet synchronous reluctance motor |
| CN112968549B (en) * | 2021-01-26 | 2022-05-17 | 珠海格力电器股份有限公司 | Rotor assembly and self-starting permanent magnet synchronous reluctance motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109378956A (en) | 2019-02-22 |
| CN108011459A (en) | 2018-05-08 |
| CN109309415B (en) | 2020-11-10 |
| CN109309414A (en) | 2019-02-05 |
| CN109378956B (en) | 2020-04-21 |
| CN109510345B (en) | 2021-07-27 |
| CN109309414B (en) | 2021-06-29 |
| CN109510345A (en) | 2019-03-22 |
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