CN105322744B - Split type combined permanent-magnet brushless motor for electric vehicle - Google Patents
Split type combined permanent-magnet brushless motor for electric vehicle Download PDFInfo
- Publication number
- CN105322744B CN105322744B CN201510757150.1A CN201510757150A CN105322744B CN 105322744 B CN105322744 B CN 105322744B CN 201510757150 A CN201510757150 A CN 201510757150A CN 105322744 B CN105322744 B CN 105322744B
- Authority
- CN
- China
- Prior art keywords
- magnet
- permanent
- magnet steel
- rotor
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention discloses a kind of Split type combined permanent-magnet brushless motor for electric vehicle, rotor coaxial is located at stator interior, the ferrite permanent-magnet magnet steel of the extremely upper fixed Nd-Fe-B permanent magnetic magnet steel and two pieces of identical rectangles for being inlaid with one piece of rectangle of each of rotor, Nd-Fe-B permanent magnetic magnet steel is close to air gap and symmetrical relative to rotor pole center line, two blocks of ferrite permanent-magnet magnet steel are close to shaft and are distributed in the both sides of rotor pole center line and symmetrical relative to pole center line, it is magnetic conduction bridge between two blocks of ferrite permanent-magnet magnet steel, each the extremely upper tangential direction of the permanent-magnet magnetic steel capital circumferentially magnetizes, same extremely upper magnetizing direction is identical, magnetizing direction is opposite in two neighboring pole；Two kinds of materials of rare earth permanent magnet and non-rare-earth ferrite permanent magnetism are used simultaneously, on the basis of ensuring the power density and torque density of few rare-earth permanent-magnet electric machine, 50% or more cost reduction can meet requirement of the electric vehicle application scenario to torque and power under the premise of having higher power density and torque density.
Description
Technical field
The present invention relates to a kind of permanent magnet synchronous motors, belong to motor manufacturing and control field, refer in particular to one kind and are suitable for drawing
The application scenarios such as hybrid vehicle, electric vehicle need the requirement of the driveabilities such as wide range speed control, high efficiency, high power density forever
Magnetic brushless motor.
Background technology
With the promotion of permanent magnet performance, the rare-earth permanent-magnet electric machine based on neodymium iron boron, due to high power density, height
The advantages that efficiency, achieves extensive use in fields such as hybrid vehicle, electric vehicles.The mistake of rare earth mineral products in recent years
Degree exploitation not only makes rare earth storage level decline to a great extent, but also causes serious destruction to ecological environment.In order to protect rare earth resources
And the increase of rare earth permanent magnet demand results in rising violently for rare earth permanent magnet price, rare-earth permanent-magnet electric machine market also receives huge
, therefore, there is non-rare earth or few rare-earth permanent-magnet electric machine in impact.
For technological layer, non-terres rares motor can be divided into two classes.One kind is not use the non-permanent magnetism of permanent-magnet material
Class motor, such as direct current generator, induction machine, switched reluctance machines.Since the armature winding on DC motor rotor needs to lead to
It crosses collector ring and brush is connected with external circuit, when motor high speed rotation, spark and mill are will produce between collector ring and brush
Damage, the application in electric vehicle field are relatively fewer.Induction machine is simple in structure, and cost is relatively low, reliable for operation, still
Its power density, efficiency, power factor etc. are relatively low.Switched reluctance machines are simple in structure, cheap and speed adjustable range compared with
Width, but the structure of its double-salient-pole causes larger torque pulsation and running noises.Another kind of motor still falls within magneto
Scope, but this kind of motor uses the non-rare earth permanent-magnetic material such as ferrite, alnico.Ferrite permanent-magnet materials are cheap,
Only 1/10th or so of rare earth permanent-magnetic material.But since the magnetic energy product of ferrite permanent-magnet is relatively low, ferrite material is directly used
Permanent magnetism replaces rare earth permanent magnet excitation, the power density of motor that can be decreased obviously, it is difficult to meet the requirement of electric vehicle application.Document
“Performance of PMASynRM with ferrite magnets for EV/HEV applications
It (is published in IEEE Transactions in 2014 in considering productivity "
Industry.Applications volumes 50,4 phases, 2427-2435 pages), ferrite permanent-magnet shape is added in synchronous magnetic resistance motor
At permanent magnetism saturable synchronous magnetic resistance motor.Reluctance torque and permanent-magnet torque is utilized simultaneously in the motor, effectively increases motor
Torque density.But since reluctance torque accounts for the major part of output torque, the torque of permanent magnetism saturable synchronous magnetic resistance motor
It pulses larger.Document " Rotor structure in 50kW spoke-type interior permanent magnet
synchronous motor with ferrite permanent magnets for automotive applications”
In (publish in IEEE Energy Conversion Congress and Exposition in 2013,606-613 pages),
By increasing air gap in traditional spoke-like ferrite rotor, the power density of motor is improved using reluctance torque, but
It is the mechanical strength of rotor also therefore to reduce, there are risks when high-speed cruising.In order to ensure certain power density, ferrite is forever
Magneto is generally required using a large amount of ferrite permanent-magnet materials, this can cause the d-axis inductance of motor to reduce, to influence electricity
The weak magnetic speed-up ability of machine is not suitable for the high-speed cruising of motor.
Therefore, how to ensure the property of the high power density and wide speed regulating range of motor while reducing rare earth permanent magnet dosage
Can be that current magneto field needs the technological difficulties for solving or breaking through.
Invention content
Use ferrite permanent-magnet materials and Nd-Fe-B permanent magnet material as excitation simultaneously the purpose of the present invention is to propose to a kind of
Source not only has higher power density but also has the brushless electricity of Split type combined permanent-magnet for electric vehicle of wider speed adjustable range
Machine.
To achieve the above object, the technical solution adopted by the present invention is：The present invention includes stator, rotor and shaft, rotor
Be coaxially located at stator interior, rotor center is shaft, between stator inner wall and rotor outer wall have air gap, each of rotor extremely on
The ferrite permanent-magnet magnet steel of the fixed Nd-Fe-B permanent magnetic magnet steel and two pieces of identical rectangles for being inlaid with one piece of rectangle, Nd-Fe-B permanent magnetic
Magnet steel is close to air gap and symmetrical relative to rotor pole center line, and two blocks of ferrite permanent-magnet magnet steel are close to shaft and are distributed in rotor pole
Both sides of center line and symmetrical relative to pole center line, are magnetic conduction bridge, magnetic conduction bridge and two between two blocks of ferrite permanent-magnet magnet steel
It is seamless between block ferrite permanent-magnet magnet steel to be fixedly connected；It is same extremely on magnetic conduction bridge radial centre lines and Nd-Fe-B permanent magnetic magnet steel
Radial centre lines overlap, it is same extremely on the seamless outer end for being fixedly connected with magnetic conduction bridge in Nd-Fe-B permanent magnetic magnet steel inner end；Rotor
Each extremely on one piece of rectangle Nd-Fe-B permanent magnetic magnet steel and two pieces of rectangles ferrite permanent-magnet magnet steel tangential side circumferentially
To magnetizing, it is same extremely on one piece of rectangle Nd-Fe-B permanent magnetic magnet steel and two pieces of rectangles ferrite permanent-magnet magnet steel magnetizing direction
It is identical, the magnetizing direction of the Nd-Fe-B permanent magnetic magnet steel of one piece of rectangle in two neighboring pole and the ferrite permanent-magnet magnet steel of two pieces of rectangles
On the contrary.
Nd-Fe-B permanent magnetic magnet steel is w along the thickness of magnetizing direction1, ferrite permanent-magnet magnet steel is w along the thickness of magnetizing direction2,
The thickness of magnetic conduction bridge is w4, Nd-Fe-B permanent magnetic magnet steel 3 is h along the width of rotor radial1, ferrite permanent-magnet magnet steel is along rotor radial
Width be h2, w1:w2=1:1.5、h1:h2=1:3.7、w4:w2=1:1.5.
Magnetic conduction bridge outer end face is concordant with two pieces of ferrite permanent-magnet magnet steel outer end faces of its both sides.
Either exist embedded with non-magnet material block between the inner end of two neighboring ferrite permanent-magnet magnet steel on not homopolarity
There are air gaps therebetween.
The present invention has an advantageous effect in that after using above-mentioned technical proposal：
1, the rotor of motor of the present invention uses rare earth permanent magnet simultaneously and non-rare-earth ferrite permanent magnetism is two distinct types of
Material, and non-rare earth permanent-magnetic material dosage accounts for 60% or more of total permanent magnetism dosage (rare earth and non-rare earth), is ensuring few rare earth forever
On the basis of the power density and torque density of magneto, 50% or more cost reduction, can have higher power density and
Meet requirement of the electric vehicle application scenario to torque and power under the premise of torque density,
2, motor permanent-magnet material dosage of the present invention and motor inductances etc. directly determine the torque density of motor, weak magnetic ability
And the Key Performance Indicators such as speed adjustable range.Motor it is each extremely on, along radial direction from the inside to the outside respectively be embedded with two pieces points
Split formula ferrite permanent magnet placed side by side and one piece of rare-earth permanent magnet, the thickness of ferrite permanent magnet and rare-earth permanent magnet is in ruler
It is very little upper by 1.5:1, width dimensionally presses 3.7:1 is designed, it is ensured that power density and torque of the motor in middle low regime
Density effectively increases the weak magnetic ability of high velocity, is conducive to the high-performance cruise ability of electric vehicle.
3, non-rare-earth ferrite permanent magnet uses two pieces of ferrite Split type structures placed side by side in motor of the present invention,
And two pieces of ferritic thickness can be equal or different, but the silicon steel sheet magnetic inductive block thickness between two pieces of ferrites of Split type structure
Meet 1 between ferritic thickness:1.5, the magnetic flux that two pieces of ferrites generate is connected by silicon steel sheet magnetic inductive block, the placement side
Formula effectively reduces the magnetic resistance in weak magnetic circuit, increases the d-axis inductance of motor, further enhances the weak magnetic speed-up energy of motor
Power, and reduce permanent magnet eddy-current loss.
4, motor of the present invention uses the ferrite permanent-magnet and one piece of rare earth permanent magnet hybrid excitation of two block splittings, rare earth permanent magnet production
Raw magnetic flux is in parallel with the magnetic flux of connecting that two pieces of ferrite permanent-magnets generate, and keeps the thickness of ferrite permanent-magnet constant, increases dilute
The thickness of native permanent magnetism can effectively improve the operating point of ferrite permanent-magnet, it is therefore prevented that the irreversible degaussing of ferrite permanent-magnet, due to dilute
The thickness of native permanent magnetism is smaller, and magnetic resistance is small, and a large amount of weak magnetic magnetic flux can pass through rare earth permanent magnet, to improve the anti-of ferrite permanent-magnet
Degaussing ability.
5, the rotor of motor of the present invention uses spoke-like structure, and circumferentially tangential direction alternately magnetizes permanent magnetic steel, utilizes
" poly- magnetic benefit " effectively increases the utilization rate and torque density of permanent-magnet material.Piecemeal modularization is used in rotor overall structure
Modular construction, effectively reduce the eddy-current loss and iron loss of rotor core, it is difficult to simplify installation for Modular rotor partitioned organization
Degree.
6, the stator of motor of the present invention uses modularization fractional-slot centralization winding, winding split-phase to carry out mould by " AABBCC "
Block split-phase improves machine winding factor, reduces winding back emf harmonic wave, can reduce the torque arteries and veins in motor operation course
It is dynamic.
Description of the drawings
Fig. 1 is the radial section structural schematic diagram of present invention Split type combined permanent-magnet brushless motor for electric vehicle；
Fig. 2 is the Automatic manual transmission axial view of the present invention；
Fig. 3 is that rotor partial structurtes enlarged diagram and permanent magnetic steel magnetize schematic diagram in Fig. 1；
Fig. 4 is stator structure schematic diagram and three-phase windings distribution map in Fig. 1；
Fig. 5 is the connected mode schematic diagram of stator armature winding in Fig. 4；
Fig. 6 is the magnetic flux schematic diagram of permanent magnetic steel in the present invention；
Fig. 7 is no-load magnetic field distribution map of the present invention；
Fig. 8 is d-axis, the quadrature axis schematic diagram in Fig. 1 on rotor；
Fig. 9 is structure and geometric dimension the mark enlarged diagram of permanent magnetic steel in Fig. 1；
Figure 10 is traditional spoke-like ferrite permanent-magnet synchronous motor radial section structural schematic diagram；
Figure 11 is that the torque of the present invention and traditional spoke-like ferrite permanent-magnet synchronous motor compare figure with rotation speed change；
Figure 12 is that the present invention and the power of traditional spoke-like ferrite permanent-magnet synchronous motor compare figure with rotation speed change.
In figure：1. stator；2. rotor；3. Nd-Fe-B permanent magnetic magnet steel；4. ferrite permanent-magnet magnet steel；5. circular locating openings；6.
Non-magnet material block；7. end cap；8. shaft；9. engine base；10. stator yoke；11. stator tooth；12. armature winding；13. stator slot；
14. magnetic conduction bridge.
Specific implementation mode
Referring to Fig. 1, Fig. 2 and Fig. 3, the present invention includes stator 1, rotor 2, shaft 8 and end cap 7, and stator 1 and end cap 7 are fixed
It links together, end cap 7 is fixedly mounted on engine base 9.Rotor 2 is coaxially located inside stator 1, and there is fluting at the center of rotor 2, is used
In placing shaft 8, rotor 2 is driven by shaft 8 to be rotated.Stator 1 and rotor 2 be all by the silicon steel plate stacking of 0.35mm thickness and
At stacking factor 0.95, shaft 8 is made of un-conducted magnetic material.There is air gap, gas between 2 outer wall of 1 inner wall of stator and rotor
The thickness of gap is related with the power grade of motor, selected permanent-magnet material and stator 1, the processing of rotor 2 and assembly technology.
Each of rotor 2 extremely on the fixed Nd-Fe-B permanent magnetic magnet steel 3 and two pieces of identical rectangles for being inlaid with one piece of rectangle
Ferrite permanent-magnet magnet steel 4.Wherein, Nd-Fe-B permanent magnetic magnet steel 3 is located at rotor 2 close to the part of air gap and relative to the rotor pole
Center line is symmetrical, and two blocks of ferrite permanent-magnet magnet steel 4 are located at rotor 2 close to the part of shaft 8, and are distributed in rotor pole center line
Both sides and symmetrical relative to pole center line.Rotor 2 is set to be embedded with two block splitting formulas respectively from the inside to the outside along radial direction placed side by side
Ferrite permanent magnet and one piece of rare-earth permanent magnet.Rotor 2 extremely on all circumferencial directions of Nd-Fe-B permanent magnetic magnet steel 3 be uniformly distributed.
Fig. 1 shares 10 blocks of Nd-Fe-B permanent magnetic magnet steel 3 and 20 blocks of ferrite permanent-magnet magnet steel 4 along the circumferential direction only by taking 10 pole motors as an example
It is even to be embedded in rotor 2.Magnetic conduction bridge 14 is located between two blocks of ferrite permanent-magnet magnet steel 4, magnetic conduction bridge 14 and two pieces of ferrite permanent-magnets
It is seamless between magnet steel 4 to be fixedly connected.It is same extremely on the radial centre lines of magnetic conduction bridge 14 and the radial direction of Nd-Fe-B permanent magnetic magnet steel 3 in
Heart line overlap, it is same diametrically.It is same extremely on 3 inner end of Nd-Fe-B permanent magnetic magnet steel seamless be fixedly connected on the outer of magnetic conduction bridge 14
End.The outer end face of magnetic conduction bridge 14 is concordant with two pieces of 4 outer end faces of ferrite permanent-magnet magnet steel of 14 both sides of magnetic conduction bridge.Iron oxygen in order to prevent
The leakage field of the inner end of body permanent magnetic steel 4, embedded with non-between the inner end of the two neighboring ferrite permanent-magnet magnet steel 4 on not homopolarity
Permeability magnetic material block 6.In order to simplify technique or mitigate the weight of rotor 2, also directly air gap can be used as non-magnet material
Block 6, i.e., there are air gaps between the inner face of the two neighboring ferrite permanent-magnet magnet steel 4 on not homopolarity.
On rotor 2, all respectively it is distributed uniformly and circumferentially at the position of shaft 8 and at the position of stator 1
There are the circular locating openings 5 equal with 2 number of poles of rotor, to reinforce the mechanical strength of rotor 2.The center of circle of circular locating openings 5, which is located at, to be turned
In the symmetrical center line of sub- two neighboring pole.
Referring to Fig. 3, each of rotor 2 extremely on one piece of rectangle Nd-Fe-B permanent magnetic magnet steel 3 and two pieces of rectangles ferrite
The tangential direction of permanent magnetic steel 4 all circumferentially magnetizes, it is same extremely on one piece of rectangle Nd-Fe-B permanent magnetic magnet steel 3 and two pieces of rectangles
Ferrite permanent-magnet magnet steel magnetizing direction it is identical, the Nd-Fe-B permanent magnetic magnet steel 3 and two pieces of squares of one piece of rectangle in two neighboring pole
The magnetizing direction of the ferrite permanent-magnet magnet steel of shape is opposite.
Referring to Fig. 4, stator 1 is made of stator yoke 10, stator tooth 11, stator slot 13.Shape between two neighboring stator tooth 11
At stator slot 13,11 radial cross-section of stator tooth is T-type, and close to rotor 2, bottom and the stator yoke 10 of T-type are linked as at the top of T-type
One.Centralized armature winding 12 is cased on stator tooth 11.12 stator tooths 11, each adjacent two stator are shared on stator 1
Armature winding 12 on tooth 11 distinguishes corresponding A, B, C three-phase.
Referring to Fig. 5, "+" is the inlet wire direction of armature winding 12 in Fig. 4, and "-" is the outlet direction of armature winding 12, A, B,
C is motor three-phase windings.The 13-1 that asks is marked in Fig. 4 until 13-12 is respectively 12 stator slots 13, is put in each stator slot 13
Armature winding 12 there are two setting.
Referring to Fig. 6 and Fig. 7, the path for the magnetic flux A that Nd-Fe-B permanent magnetic magnet steel 3 generates is as follows：Pass through Nd-Fe-B permanent magnetic successively
10, second 3, first stator tooths 11 of magnet steel, stator yoke stator tooths 11；The magnetic that two pieces of series connection of ferrite permanent-magnet magnet steel 4 generate
The path of logical B is as follows：Pass through second block of ferrite permanent-magnet magnet steel 4,14, first blocks of ferrite permanent-magnet magnet steel 4 of magnetic conduction bridge, the successively
10, second one stator tooth 11, stator yoke stator tooths 11；There are leakage fields for the inner end of ferrite permanent-magnet magnet steel 4, generate
The path of leakage field magnetic flux C is as follows：14, first blocks of second block of ferrite permanent-magnet magnet steel 4, magnetic conduction bridge ferrite permanent-magnet magnet steel 4, first
Block non-magnet material 6, spoke-like rotor part 2-2, second piece of non-magnet material block 6.The magnetic flux that Nd-Fe-B permanent magnetic magnet steel 3 generates
The magnetic flux B total magnetic parallel with one another for constituting permanent magnet generation on a rotor pole that A and two piece of series connection of ferrite permanent-magnet magnet steel 4 generates
It is logical.Simultaneously as non-magnet material block 6 increase ferrite permanent-magnet magnet steel 4 generation inner end leakage field magnetic flux C path in
The brow leakage of magnetic resistance, ferrite permanent-magnet magnet steel 4 has obtained effective inhibition.
Referring to Fig. 8, Nd-Fe-B permanent magnetic magnet steel 3 and ferrite permanent-magnet magnet steel 4 are located on d-axis magnetic circuit, the d-axis inductance of motor
It is smaller.Ferrite permanent-magnet magnet steel 4 uses splitted construction, the magnetic conduction bridge 14 between two blocks of ferrite permanent-magnet magnet steel 4 that can be effectively increased
The d-axis inductance of motor, to increase the speed adjustable range of motor.
Referring to Fig. 9, thickness w of the Nd-Fe-B permanent magnetic magnet steel 3 along magnetizing direction1With ferrite permanent-magnet magnet steel 4 along magnetizing direction
Thickness w2Directly determine the magnetic resistance of d-axis magnetic circuit, thus it is larger to the d-axis inductive impact of motor, and Nd-Fe-B permanent magnetic magnetic
Steel 3 is along the radial width h of rotor 21With ferrite permanent-magnet magnet steel 4 along the width h of rotor radial2The output torque of motor is influenced
It is larger.In order on the basis of maintaining an export by constant moment, reduce the dosage of rare earth permanent magnet as far as possible and ensure certain speed governing
Range needs Rational choice Nd-Fe-B permanent magnetic magnet steel 3 along the thickness w of magnetizing direction1, along the width h of rotor radial1With two blocks of iron oxygen
Thickness w of the body permanent magnetic steel 4 along magnetizing direction2,、w3, two blocks of ferrite permanent-magnet magnet steel 4 along rotor radial width h2.Wherein,
w2=w3, w1:w2=1:1.5, h1:h2=1:3.7, it is such to be dimensioned so that 4 non-rare earth permanent-magnetic material of ferrite permanent-magnet magnet steel
Dosage accounts for 60% or more of total permanent magnetism dosage (rare earth and non-rare earth), it is ensured that power density and torque of the motor in middle low regime
Density effectively increases the weak magnetic ability of high velocity.The thickness w of magnetic conduction bridge 144With the thickness w of two blocks of ferrite permanent-magnet magnet steel 42
Between meet w4:w2=1:1.5, which effectively reduces the magnetic resistance in weak magnetic circuit, improves the inductance of motor, into one
Step enhances the weak magnetic speed-up ability of motor.
In order to fully demonstrate the advantage of present invention combination permanent magnet type synchronous motor, Figure 10 is traditional spoke-like ferrite permanent-magnet
Synchronous motor.It can be seen from fig. 10 that only with ferrite permanent-magnet magnet steel 4 in traditional spoke-like ferrite permanent-magnet synchronous motor
Carry out excitation.Under identical watt level, the thickness of ferrite permanent-magnet magnet steel 4 in traditional spoke-like ferrite permanent-magnet synchronous motor
Degree is more than the sum of the thickness of two blocks of ferrite permanent-magnet magnet steel 4 of the present invention, therefore magnetic resistance is larger on its d-axis magnetic circuit, d-axis inductance
It is smaller.And the magnetic bridge 14 between two blocks of ferrite permanent-magnet magnet steel 4 of the invention can further increase the d-axis inductance of motor.
Traditional spoke-like ferrite permanent-magnet synchronous motor of same watt level is compared and analyzed with the present invention.In phase
Under same inverter circuit and voltage, using identical control method to conventional motors and the present invention, (torque capacity electric current is than controlling
System and maximum power output control), by finite element simulation, related torque and the power characteristic of two motors are obtained, point
Not referring to Figure 11 and Figure 12, the curve E in Figure 11 and Figure 12 indicates that motor of the present invention, curve F indicate tradition spoke-like ferrite
Permanent magnet synchronous motor.As shown in Figure 11, when low speed, two motors have identical output torque；When high speed, in same rotating speed
Under, the output torque of motor of the present invention is higher than traditional spoke-like ferrite permanent-magnet synchronous motor.It is adopted in low speed referring to Figure 12
Started with torque capacity, two power of motor ascending curves overlap.It is bright since motor d-axis inductance of the present invention is larger when high speed
It is aobvious to expand electric machine speed regulation range.
Claims (6)
1. a kind of Split type combined permanent-magnet brushless motor for electric vehicle, including stator (1), rotor (2) and shaft (8) turn
Sub (2) are coaxially located at stator (1) inside, and rotor (2) center is shaft (8), is had between stator (1) inner wall and rotor (2) outer wall
There is air gap, it is characterized in that：The extremely upper fixed Nd-Fe-B permanent magnetic magnet steel (3) for being inlaid with one piece of rectangle of each of rotor (2) and two pieces
The ferrite permanent-magnet magnet steel (4) of identical rectangle, Nd-Fe-B permanent magnetic magnet steel (3) is close to air gap and relative to rotor pole center line pair
Claim, two pieces of ferrite permanent-magnet magnet steel (4) are close to shaft (8) and are distributed in the both sides of rotor pole center line and relative to pole center line
Symmetrically, between two pieces of ferrite permanent-magnet magnet steel (4) it is magnetic conduction bridge (14), magnetic conduction bridge (14) and two blocks of ferrite permanent-magnet magnet steel
(4) seamless between to be fixedly connected；It is same extremely on magnetic conduction bridge (14) radial centre lines and Nd-Fe-B permanent magnetic magnet steel (3) radial direction
Center line overlap, it is same extremely on the seamless outer end for being fixedly connected with magnetic conduction bridge (14) in Nd-Fe-B permanent magnetic magnet steel (3) inner end；Rotor
Each of (2) extremely on one piece of rectangle Nd-Fe-B permanent magnetic magnet steel (3) and two pieces of rectangles ferrite permanent-magnet magnet steel (4) along circle
Week tangential direction magnetize, it is same extremely on one piece of rectangle Nd-Fe-B permanent magnetic magnet steel (3) and two pieces of rectangles ferrite permanent-magnet
The magnetizing direction of magnet steel is identical, the ferrite of Nd-Fe-B permanent magnetic magnet steel (3) and two pieces of rectangles of one in two neighboring pole piece rectangle
The magnetizing direction of permanent magnetic steel is opposite；Nd-Fe-B permanent magnetic magnet steel (3) is w along the thickness of magnetizing direction1, ferrite permanent-magnet magnet steel
(4) it is w along the thickness of magnetizing direction2, the thickness of magnetic conduction bridge (14) is w4, width of the Nd-Fe-B permanent magnetic magnet steel (3) along rotor radial
It is h1, ferrite permanent-magnet magnet steel (4) is h along the width of rotor radial2, w1:w2=1:1.5、h1:h2=1:3.7、w4:w2=1:
1.5。
2. a kind of Split type combined permanent-magnet brushless motor for electric vehicle according to claim 1, it is characterized in that：Magnetic conduction bridge
(14) outer end face is concordant with two pieces of ferrite permanent-magnet magnet steel (4) outer end faces of its both sides.
3. a kind of Split type combined permanent-magnet brushless motor for electric vehicle according to claim 1, it is characterized in that：In difference
Non-magnet material block (6) is embedded between the inner end of two neighboring ferrite permanent-magnet magnet steel (4) on extremely.
4. a kind of Split type combined permanent-magnet brushless motor for electric vehicle according to claim 1, it is characterized in that：In difference
There are air gaps between the inner face of two neighboring ferrite permanent-magnet magnet steel (4) on extremely.
5. a kind of Split type combined permanent-magnet brushless motor for electric vehicle according to claim 1, it is characterized in that：In rotor
(2) it on, has all respectively been distributed uniformly and circumferentially and rotor at the position of shaft (8) and at the position of stator (1)
(2) the equal circular locating openings of number of poles (5), the center of circle of circular locating openings (5) are located at the symmetrical center line of rotor (2) two neighboring pole
On.
6. a kind of Split type combined permanent-magnet brushless motor for electric vehicle according to claim 1, it is characterized in that：Stator
(1) it is made of stator yoke (10), stator tooth (11) and stator slot (13), stator slot is formed between two neighboring stator tooth (11)
(13), stator tooth (11) radial cross-section is T-type, and centralized armature winding (12) is cased on stator tooth (11), per adjacent two
Armature winding (12) difference corresponding A on a stator tooth (11), B, C three-phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757150.1A CN105322744B (en) | 2015-11-09 | 2015-11-09 | Split type combined permanent-magnet brushless motor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757150.1A CN105322744B (en) | 2015-11-09 | 2015-11-09 | Split type combined permanent-magnet brushless motor for electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105322744A CN105322744A (en) | 2016-02-10 |
| CN105322744B true CN105322744B (en) | 2018-08-10 |
Family
ID=55249529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510757150.1A Active CN105322744B (en) | 2015-11-09 | 2015-11-09 | Split type combined permanent-magnet brushless motor for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105322744B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529841A (en) * | 2016-02-28 | 2016-04-27 | 天津市革能科技有限公司 | Combined type neodymium-iron-boron mechanism used for motor |
| US10985620B2 (en) | 2018-03-14 | 2021-04-20 | Accelerated Systems Inc. | Devices to be used as magnets |
| US11283315B2 (en) | 2018-03-14 | 2022-03-22 | Accelerated Systems Inc. | Devices to be used as magnets |
| CN109378916A (en) * | 2018-12-14 | 2019-02-22 | 哈尔滨理工大学 | A kind of auxiliary permanent magnet alternating pole spoke type rotor structure for permanent magnet motor |
| CN112615446A (en) * | 2020-11-18 | 2021-04-06 | 广东威灵电机制造有限公司 | Rotor punching sheet, rotor assembly and motor |
| CN112910200A (en) * | 2021-03-16 | 2021-06-04 | 山东理工大学 | Production method of permanent magnet rotor of combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
| CN113381525A (en) * | 2021-04-13 | 2021-09-10 | 江苏交科能源科技发展有限公司 | Low-cost hybrid magnetic steel permanent magnet motor and use method thereof |
| CN113131631B (en) * | 2021-05-07 | 2022-11-25 | 山东理工大学 | Driving motor of electric automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710746A (en) * | 2009-12-16 | 2010-05-19 | 三一电气有限责任公司 | Rotor and self-starting three-phase permanent magnet motor |
| CN103219814A (en) * | 2013-04-09 | 2013-07-24 | 沈阳工业大学 | Asynchronous starting permanent magnet synchronous motor rotor based on permanent magnets with different residual magnetic densities |
| DE102013202006A1 (en) * | 2013-02-07 | 2014-08-07 | Robert Bosch Gmbh | Rotor assembly for electric machine, has permanent magnet with first and second portions that are transverse to arrangement direction of pole shoes, while thickness of the pole shoes are different in arrangement direction |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003199273A (en) * | 2001-12-27 | 2003-07-11 | Toshiba Corp | Permanent magnet system reluctance type rotating electric machine |
-
2015
- 2015-11-09 CN CN201510757150.1A patent/CN105322744B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710746A (en) * | 2009-12-16 | 2010-05-19 | 三一电气有限责任公司 | Rotor and self-starting three-phase permanent magnet motor |
| DE102013202006A1 (en) * | 2013-02-07 | 2014-08-07 | Robert Bosch Gmbh | Rotor assembly for electric machine, has permanent magnet with first and second portions that are transverse to arrangement direction of pole shoes, while thickness of the pole shoes are different in arrangement direction |
| CN103219814A (en) * | 2013-04-09 | 2013-07-24 | 沈阳工业大学 | Asynchronous starting permanent magnet synchronous motor rotor based on permanent magnets with different residual magnetic densities |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105322744A (en) | 2016-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105322744B (en) | Split type combined permanent-magnet brushless motor for electric vehicle | |
| CN104578477A (en) | Mixed permanent magnetic pole-alternating and magnetic flux-switching memory motor and winding switching magnetism-weakening control method thereof | |
| CN103066719B (en) | A kind of magneticfocusing stator permanent magnetic type vernier motor | |
| CN103973062B (en) | A kind of Magneticflux-switching type hybrid permanent magnet memory electrical machine of high power density | |
| CN108448849A (en) | A kind of stator permanent magnetic type birotor magnetic field modulation motor and its design method | |
| CN106026597A (en) | Built-in magnetic barrier type magnetic field enhanced permanent magnet brushless motor | |
| CN103199661B (en) | Built-in permanent magnet memory motor of magnetic flux switching type | |
| CN104467334B (en) | A kind of stator magneticfocusing hybrid permanent magnet memory electrical machine | |
| CN107070150B (en) | A kind of concentratred winding direct current biasing type hybrid excitation permanent magnet motor | |
| CN105553128B (en) | A kind of mixed excited magnetic pass switch motor | |
| CN107579636A (en) | A kind of axial block form mixed rotor motor | |
| CN103490532B (en) | A kind of error-tolerance type stator partition type Magneticflux-switching type memory electrical machine | |
| CN101651371B (en) | Stator surface mounted doubly salient permanent magnet motor with auxiliary salient pole | |
| CN105281521B (en) | Automobile-used wide range speed control d-axis magnetic-field-enhanced permanent-magnetic brushless electric machine and its subregion adjustable magnetic control | |
| CN104410180A (en) | E-shaped stator core flux switching type hybrid permanent magnet memory motor | |
| CN108110978A (en) | A kind of bilateral hybrid excitation stator partition magnetic flux adjustable permanent-magnet motor of few rare earth | |
| CN105356699B (en) | A kind of automobile-used birotor flux switch motor | |
| CN105162301A (en) | High-reluctance torque concentrated winding permanent magnet synchronous motor | |
| CN109617267A (en) | It is a kind of to split slot type magnetic field modulation magneto suitable for hybrid vehicle | |
| CN105811696A (en) | Hybrid excitation type composite magnetic flux switching permanent-magnet motor | |
| CN112072811A (en) | Embedded-permanent magnet reluctance type mixed magnetic pole type memory motor | |
| CN104467333A (en) | Rotor excitation multi-phase reluctance motor and control method thereof | |
| CN103501063B (en) | A kind of many flute profiles permanent magnetism embedded Magneticflux-switching type memory electrical machine | |
| CN102593974A (en) | Hybrid excitation switched flux motor | |
| CN114123581A (en) | Self-starting permanent magnet auxiliary synchronous reluctance motor rotor and motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |