CN203278587U - Rare earth permanent magnet motor for electric vehicle - Google Patents
Rare earth permanent magnet motor for electric vehicle Download PDFInfo
- Publication number
- CN203278587U CN203278587U CN 201320075955 CN201320075955U CN203278587U CN 203278587 U CN203278587 U CN 203278587U CN 201320075955 CN201320075955 CN 201320075955 CN 201320075955 U CN201320075955 U CN 201320075955U CN 203278587 U CN203278587 U CN 203278587U
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- Prior art keywords
- rotor
- permanent magnet
- motor
- earth permanent
- stator
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- 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.)
- Expired - Fee Related
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a rare earth permanent magnet motor for an electric vehicle. The rare earth permanent magnet motor comprises a rotor, a stator and a sensor holder, wherein the rotor is provided with at least two sets of permanent magnets, the sets of permanent magnets are separated by a gap, the stator is provided with at least two sets of coils, and each set of the permanent magnet corresponds to one set of the coil. Permanent magnets on the rotor are divided into groups and fixed on the rotor, the coils on the stator are divided into groups corresponding to the permanent magnets on the rotor, and the high power work of an electric motor in different loading regions is achieved by current feedback control and position control of a sensor.
Description
Technical field
The present invention relates to a kind of rare-earth permanent-magnet electric machine, especially relate to a kind of electric motor car rare-earth permanent-magnet electric machine.
Background technology:
Compare with traditional electro-magnetic motor, rare-earth permanent-magnet electric machine has simple in structure, and is reliable; Volume is little, and quality is light; Loss is little, and efficient is high; The shape and size of motor can versatile and flexiblely wait remarkable advantage.The excellent magnetic energy of rare earth permanent magnet adds the fast development of power electronic device and microcomputer technology, many traditional electro-magnetic motors is substituted with rare-earth permanent-magnet electric machine one after another, and can realize traditional unapproachable high-performance of electro-magnetic motor.Thereby range of application is very extensive, almost spreads all over the every field of Aero-Space, national defence, industrial and agricultural production and daily life.The motor of pure electric transportation system-specific, by the limited power generation action of obtaining from battery, so require its efficient fine, simultaneously, the motor of using than general industry on performance is stricter.
For the electric motor car rare-earth permanent-magnet electric machine, owing to being that on-vehicle battery provides power, battery capacity and mechanical efficiency certain in, the operating efficiency of motor determines the distance travelled of locomotive.For electric train rare-earth permanent-magnet electric machine commonly used, the rotor of this motor is provided with one group of permanent magnet, the motor rated power coupling is the maximum load of motor, yet motor is at start-up course and traffic coverage, loading in transportation of locomotive changes, and the load of motor is difficult to reach maximum load, and motor is usually worked under rated power again, and this has just caused motor often to be operated in the poor efficiency district of motor.This rare-earth permanent-magnet electric machine can shorten the distance travelled of electric train, increases the number of times that discharges and recharges of battery, the useful life of reducing battery.
Research and development couplings different loads, satisfy the rare-earth permanent-magnet electric machine of machine operation in the optimum efficiency interval and be electric train promotes in the urgent need to.
Summary of the invention
The purpose of this utility model is to provide a kind of to be had under the different loads of satisfying, and motor can both be operated in the electric motor car rare-earth permanent-magnet electric machine in efficiency operation interval.
Technical solution:
The utility model comprises: rotor, and stator, sensor stand, rotor are provided with at least two group permanent magnets, are provided with the gap between every group of permanent magnet; At least be provided with two groups of coils on stator, every group of corresponding one group of coil of permanent magnet.
Described sensor stand is inner at end cap.
The utility model is connected other coil of corresponding respective sets due to the variation of electric current along with load, makes motor coupling different loads, satisfies motor in the interval work of optimum efficiency, has high efficiency, high applicability, stable, reliable characteristics.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
The utility model such as Fig. 1, comprise motor case 4, be fixed on the motor front end cover 5 at motor casing 4 two ends, back end cover for motor 6 is fixed on the sensor stand 7 on motor front end cover 5, back end cover for motor 6, rotor 1, be embedded in the permanent magnet 2 of three groups on rotor 1, gapped between every group of permanent magnet 2, be fixed on the stator 3 on motor case 4, three groups of coils that are complementary with permanent magnet 2 are arranged on stator 3.
The course of work
Motor is when work, and stator 3 coils pass into electric current, and the magnetic field that electric current excites and permanent magnet 2 interact, 1 rotation of pushing motor rotor.According to the variation of load, electric current is connected respectively the coil of different groups, makes its electromagnetic force drive rotor 1 rotation on the permanent magnet 2 of different groups.Load hour, electric current is connected one group of coil, one group of permanent magnet 2 corresponding on the magnetic field of this group coil excitation and rotor 1 interacts, drive rotor 1 rotation.When load increased, electric current connected that on two groups of coils and rotor 1 on stator 3, corresponding permanent magnet 2 acts on.When reaching maximum with load, electric current connects that on three groups of coils and rotor 1 on stator 3, corresponding permanent magnet 2 acts on.Detect the electric current of motor and the position of rotor 1 by the transducer that is fixed on sensor stand 7, control and Position Control realizes under same side voltage, the synchronisms of inner three groups of different permanent magnets 2 drivings by the current feedback of controller.
Claims (2)
1. electric motor car rare-earth permanent-magnet electric machine comprises: rotor (1), and stator (3), sensor stand (7) is characterized in that: be provided with at least two groups of permanent magnets (2) on rotor (1), be provided with the gap between every group of permanent magnet (2); At least be provided with two groups of coils on stator (3), the corresponding one group of coil of every group of permanent magnet (2).
2. electric motor car rare-earth permanent-magnet electric machine according to claim 1 is characterized in that: sensor stand (7) is inner at end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075955 CN203278587U (en) | 2013-02-19 | 2013-02-19 | Rare earth permanent magnet motor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075955 CN203278587U (en) | 2013-02-19 | 2013-02-19 | Rare earth permanent magnet motor for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278587U true CN203278587U (en) | 2013-11-06 |
Family
ID=49508912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320075955 Expired - Fee Related CN203278587U (en) | 2013-02-19 | 2013-02-19 | Rare earth permanent magnet motor for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278587U (en) |
-
2013
- 2013-02-19 CN CN 201320075955 patent/CN203278587U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140219 |