CN109391113A - A kind of electric car permanent-magnet synchronous driving motor - Google Patents
A kind of electric car permanent-magnet synchronous driving motor Download PDFInfo
- Publication number
- CN109391113A CN109391113A CN201811451387.7A CN201811451387A CN109391113A CN 109391113 A CN109391113 A CN 109391113A CN 201811451387 A CN201811451387 A CN 201811451387A CN 109391113 A CN109391113 A CN 109391113A
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- Prior art keywords
- permanent magnet
- rotor core
- permanent
- magnet
- driving motor
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 33
- 230000005291 magnetic effect Effects 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 230000005389 magnetism Effects 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 12
- 230000010349 pulsation Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention proposes a kind of electric car permanent-magnet synchronous driving motors, belong to electric vehicle engineering field.The driving motor is inner rotor core, including the first permanent magnet, the second permanent magnet, the non-magnetic fixed heart, rotor core and stator；Non-magnetic fixation is fixed on inside rotor core in the heart；First permanent magnet and the second permanent magnet number are identical and be even number, and length is different and composition " λ " shape；There is high-intensity steel ring lock ring on the outside of rotor core.Compared with existing permanent magnet synchronous motor, the present invention has higher magnetic field strength, and output power, mechanical strength is big, and torque pulsation is small, can efficiently use reluctance torque, and the sine of air gap flux density is more preferable.
Description
Technical field
The present invention relates to a kind of electric car permanent-magnet synchronous driving motors, belong to electric vehicle engineering field.
Background technique
Energy problem is one of Important Problems of 21st century, and motor is as the maximum consumption object of electric power energy, very
The implementation that energy-saving and emission-reduction are affected in big degree, developing and design energy-efficient motor has important meaning to energy-saving and emission-reduction
Justice.Permanent magnet synchronous motor is simple, high-efficient with structure, power factor is big, does not need the advantages such as excitation winding, each by the world
The concern of state.
Permanent magnet synchronous motor is the motor that permanent magnet excitation generates synchronous rotary magnetic field.Classify according to magnet structure: table
Face permanent magnet synchronous motor (SPMSM), internal permanent magnet synchronous motor (IPMSM).According to stator winding induced potential waveform separation:
Sine-wave permanent magnet synchronous motor, brushless permanent-magnet DC.In addition to the above-described advantages, permanent magnet synchronous motor also has structure simple
The advantages such as single, light-weight.But permanent magnet synchronous motor is there is also starting difficulty, shock resistance is poor, total harmonic distortion is high, vulnerable to armature
The defects of reaction influences.
For these disadvantages, there is the scheme of some permanent magnet synchronous motors to be suggested at present.Such as: the China of bulletin is specially
Benefit: permanent magnet synchronous motor, application number: 201610459737.9, disclose a kind of permanent magnet synchronous electric with hollow magnetism-isolating loop
Motor rotor structure is provided with sliding slot on rotor body and is equipped with magnetic field shielding block, and the change of revolving speed will drive magnetic field shielding block
Position change increases magnetic flux to reduce leakage magnetic flux.The Chinese patent of bulletin: the asymmetric permanent magnetism of new-energy automobile
Motor, application number: 201610004524.7, a kind of magneto of asymmetric arrangement magnet steel is disclosed, by multiple set of permanent magnets
Analog-U shaped structure is synthesized, torque fluctuations are reduced, makes the radial force of d axis and q axis be intended to balance, reduces mechanical oscillation, makes an uproar
Sound improves the comprehensive performance of motor.The Chinese patent of bulletin: permanent-magnetic synchronous motor rotor and permanent magnet synchronous motor, application number:
201510562547.5, a kind of novel electric machine structure is disclosed, a radial permanent magnet body is added among two V-arrangement permanent magnets
And the polarity of radial permanent magnet body is identical as the polarity of adjacent two sides permanent magnet, optimizes air-gap field waveform, reduces cogging torque.
Currently, the permanent magnet arrangement of most permanent magnet synchronous motors is using built-in line-styled, " V " type and U-typed, these are forever
Although magnet method for arranging can use reluctance torque, but band cogging torque is excessive simultaneously, torque pulsation is excessive and air gap magnetic
It is close vulnerable to armature-reaction bring adverse effect etc. unfavorable factors, be unfavorable for improve motor efficiency and stability.
The present invention proposes on the basis of excessive change does not occur for guarantee motor cost and manufacture craft does not increase difficulty
A kind of electric car permanent-magnet synchronous driving motor, the driving motor are inner rotor core, including the first permanent magnet, the second permanent magnetism
Body, the non-magnetic fixed heart, rotor core and stator；Non-magnetic fixation is fixed on inside rotor core in the heart；First permanent magnet and
Second permanent magnet number is identical and is even number, and length is different and forms " λ " shape；There is high-strength stainless steel ring in rotor core, outside
Lock ring can both prevent from deforming due to centrifugal action of rotor core when high speed rotation, and [S1] reduces total harmonic content.
Summary of the invention
The invention discloses a kind of electric car permanent-magnet synchronous driving motors, and excessive change does not occur in guarantee motor cost
Under the premise of not increasing difficulty with manufacture craft, by number is identical but length is different the first permanent magnet and the second permanent magnet combination
At " λ " shape, and using high-intensity steel ring by rotor core lock ring, to prevent the deformation of rotor core and weaken armature-reaction to wave
The distortion effects of shape, used technical solution are as follows:
A kind of electric car permanent-magnet synchronous driving motor, including the first permanent magnet, the second permanent magnet, the non-magnetic fixed heart, rotor
Iron core and stator, the driving motor are inner rotor core, are fixed on non-magnetic fixation in the heart inside rotor core.
Be all plane magnet steel the first permanent magnet and the second permanent magnet number it is identical and all have X, X is even number；First forever
The length of magnet is greater than the half of the second permanent magnet and less than 3/4ths of the second permanent magnet；Second permanent magnet one, which is located at, to be turned
On the outside of sub- iron core, other end is located on the inside of rotor core, and the second permanent magnet and rotor radial angle be greater than 20 ° and less than 45 °,
First permanent magnet one is against the centre of the second permanent magnet, and other end is close to another adjacent second permanent magnet close to rotor iron
One of intracardiac side, the first permanent magnet and the second permanent magnet are in X λ shape.
Adjacent two the first permanent magnet magnetizing directions are on the contrary, the first permanent magnet and second close on the inside of rotor core
Permanent magnet magnetizing direction is identical.
Rotor core is formed by silicon steel plate stacking.
A kind of electric car permanent-magnet synchronous driving motor as described above, it is characterised in that: have on the outside of rotor core high-strength
Spend steel ring lock ring.
A kind of electric car permanent-magnet synchronous driving motor as described above, it is characterised in that: the second permanent magnet is close to rotor
A thickness on the outside of iron core is greater than one on the inside of rotor core.
A kind of electric car permanent-magnet synchronous driving motor as described above, it is characterised in that: the second permanent magnet is in centre point
For two sections, wherein the section thickness on the outside of rotor core is greater than the section on the inside of rotor core.
Beneficial effects of the present invention are as follows:
(1) first permanent magnet and the second set of permanent magnets are at " λ ", and three face areas provide magnetic field, and magnetic field strength is big, output power.
(2) rotor core has high-intensity steel ring lock ring, due to can preventing centrifugal action of rotor core when high speed rotation
Deformation.
(3) " λ " shape magnet steel, iron core flux density is small when the second permanent magnet is close, and iron core flux density is big when the first permanent magnet is close, because
This can weaken armature-reaction to the distortion effects of waveform, keep [S2] sine higher, and reduce total harmonic content.
(4) it is fixed on non-magnetic fixation inside rotor core in the heart, the generation of internal rotor magnetic flux leakage can be prevented.
(5) air gap flux density improves the stability of motor closer to sine.
Detailed description of the invention
Fig. 1 show a kind of electric car permanent-magnet synchronous driving motor figure of the present invention.Wherein, the second permanent magnet is a section,
1, the first permanent magnet, the 2, second permanent magnet, 3, the non-magnetic fixed heart, 4, rotor core, 5, stator.
Fig. 2 show a kind of magnetizing direction figure of electric car permanent-magnet synchronous driving motor of the present invention.Wherein, the second permanent magnetism
Body is a section, the 1, first permanent magnet, the 2, second permanent magnet, 3, the non-magnetic fixed heart, 4, rotor core, 5, stator.
Fig. 3 show the structure chart that the second permanent magnet is two sections.Wherein, the section thickness on the outside of rotor core is greater than
A section on the inside of rotor core, the 21, second permanent magnet.
Specific embodiment
The present invention is further detailed with reference to the accompanying drawing.
A kind of electric car permanent-magnet synchronous driving motor figure of the present invention as shown in Figure 1, shown motor include the first permanent magnetism
Body, the second permanent magnet, the non-magnetic fixed heart, rotor core and stator, the driving motor is inner rotor core, in rotor core
Portion is fixed on non-magnetic fixation in the heart.
Be all plane magnet steel the first permanent magnet and the second permanent magnet number it is identical and all have X, X is even number；First forever
The length of magnet is greater than the half of the second permanent magnet and less than 3/4ths of the second permanent magnet.
Second permanent magnet one is located on the outside of rotor core, and other end is located on the inside of rotor core, and the second permanent magnet and
Rotor radial angle is greater than 20 ° and less than 45 °, and the first permanent magnet one is against the centre of the second permanent magnet, and other end is close to phase
One on the inside of rotor core of another adjacent second permanent magnet, the first permanent magnet and the second permanent magnet are in X λ shape.
Rotor core is formed by silicon steel plate stacking.
There is high-intensity steel ring lock ring on the outside of rotor core.
A thickness of second permanent magnet on the outside of rotor core is greater than one on the inside of rotor core.
A kind of magnetizing direction figure of electric car permanent-magnet synchronous driving motor of the present invention as shown in Figure 2, shown motor phase
Two adjacent the first permanent magnet magnetizing directions are on the contrary, the first permanent magnet and the second permanent magnet close on the inside of rotor core magnetizes
Direction is identical.
It is illustrated in figure 3 the structure chart that the second permanent magnet is two sections, wherein a upper section for the 21, second permanent magnet, 22 second
Next section of permanent magnet.
The basic principle of this application is:
First permanent magnet and the second permanent magnet quantity is identical but length is different forms " λ " shape, increases permanent magnetism bulk area, increases
Iron core magnetic field strength.The output power of motor is related with magnetic field strength, and magnetic field strength is bigger, and the output power of motor is bigger.
" λ " shape magnet steel, iron core flux density is small when the second permanent magnet is close, and iron core flux density is big when the first permanent magnet is close, therefore
Armature-reaction, which can be weakened, keeps the sine of back-emf higher the distortion effects of waveform, and reduces total harmonic content.
The magnetic conductance of ferromagnetic material to magnetic field have it is non-linear, armature field and permanent magnetic field coupling can be made with asymmetric iron core
Close, keep the sine of load-carrying air gap flux density more preferable, while total harmonic distortion can be reduced, reduce flux density higher hamonic wave to
Reduce ferromagnetic loss.
Armature flux linkage is closed by iron core, effectively increases axis inductor, so as to efficiently use reluctance torque, is increased
Total output torque.
Motor of the invention often apply in the environment of high speed rotation, can using high-intensitive steel ring lock ring rotor core
To prevent rotor core from deforming because of centrifugal action, increase the durability and safety of motor.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (4)
1. a kind of electric car permanent-magnet synchronous driving motor, it is characterised in that:
Including the first permanent magnet, the second permanent magnet, the non-magnetic fixed heart, rotor core and stator, the driving motor is interior turns
Minor structure is fixed on non-magnetic fixation in the heart inside rotor core；
Be all plane magnet steel the first permanent magnet and the second permanent magnet number it is identical and all have X, X is even number；First permanent magnet
Length be greater than the second permanent magnet half and less than 3/4ths of the second permanent magnet；Second permanent magnet one is located at rotor iron
On the outside of the heart, other end is located on the inside of rotor core, and the second permanent magnet and rotor radial angle are greater than 20 ° and less than 45 °, first
Permanent magnet one is against the centre of the second permanent magnet, and other end is close to another adjacent second permanent magnet in rotor core
One of side, the first permanent magnet and the second permanent magnet are in X λ shape；
Adjacent two the first permanent magnet magnetizing directions are on the contrary, the first permanent magnet and the second permanent magnetism close on the inside of rotor core
Body magnetizing direction is identical；
Rotor core is formed by silicon steel plate stacking.
2. a kind of electric car permanent-magnet synchronous driving motor as described in claim 1, it is characterised in that:
There is high-intensity steel ring lock ring on the outside of rotor core.
3. a kind of electric car permanent-magnet synchronous driving motor as described in claim 1, it is characterised in that:
A thickness of second permanent magnet on the outside of rotor core is greater than one on the inside of rotor core.
4. a kind of electric car permanent-magnet synchronous driving motor as described in claim 1, it is characterised in that:
Second permanent magnet is divided into two sections in centre, wherein the section thickness on the outside of rotor core is greater than in rotor core
One section of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451387.7A CN109391113B (en) | 2018-11-30 | 2018-11-30 | Permanent magnet synchronous driving motor of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451387.7A CN109391113B (en) | 2018-11-30 | 2018-11-30 | Permanent magnet synchronous driving motor of electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109391113A true CN109391113A (en) | 2019-02-26 |
| CN109391113B CN109391113B (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811451387.7A Active CN109391113B (en) | 2018-11-30 | 2018-11-30 | Permanent magnet synchronous driving motor of electric automobile |
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| Country | Link |
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| CN (1) | CN109391113B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742856A (en) * | 2023-07-03 | 2023-09-12 | 山东理工大学 | Magnetic field distribution adjustable motor with arc-shaped magnetic barriers |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN204928396U (en) * | 2015-05-14 | 2015-12-30 | 广东美芝制冷设备有限公司 | Rotor of rotating electrical machines, permanent magnet motor , compressor, air conditioning system |
| JP2017017783A (en) * | 2015-06-26 | 2017-01-19 | 日産自動車株式会社 | Variable magnetic flux rotary electric machine |
| CN207968107U (en) * | 2017-12-21 | 2018-10-12 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
| CN207968106U (en) * | 2017-12-21 | 2018-10-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
-
2018
- 2018-11-30 CN CN201811451387.7A patent/CN109391113B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN204928396U (en) * | 2015-05-14 | 2015-12-30 | 广东美芝制冷设备有限公司 | Rotor of rotating electrical machines, permanent magnet motor , compressor, air conditioning system |
| JP2017017783A (en) * | 2015-06-26 | 2017-01-19 | 日産自動車株式会社 | Variable magnetic flux rotary electric machine |
| CN207968107U (en) * | 2017-12-21 | 2018-10-12 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
| CN207968106U (en) * | 2017-12-21 | 2018-10-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742856A (en) * | 2023-07-03 | 2023-09-12 | 山东理工大学 | Magnetic field distribution adjustable motor with arc-shaped magnetic barriers |
| CN116742856B (en) * | 2023-07-03 | 2024-05-31 | 山东理工大学 | Magnetic field distribution adjustable motor with arc-shaped magnetic barriers |
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| Publication number | Publication date |
|---|---|
| CN109391113B (en) | 2020-12-22 |
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Effective date of registration: 20201202 Address after: No.5 manifen Road, Ganzhou economic and Technological Development Zone, Ganzhou City, Jiangxi Province Applicant after: GANZHOU FORTUNE ELECTRONIC Ltd. Address before: 260000 Wang Siwenzhuan, Logistics Department, Shandong Vocational College of Foreign Trade, 201 Jufeng Road, Zibo City, Shandong Province Applicant before: Shi Zhengqi |
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