A four-phase electric excitation motor for an electric vehicle
An excitation motor, electric vehicle technology, applied in electric vehicles, motors, synchronous motors for single-phase current, etc., can solve the problems of large commutation torque ripple, etc. short effect
Active Publication Date: 2019-02-12
SHANDONG JIAOTONG UNIV
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Problems solved by technology
With the deepening of the research, the inventor found that the technology proposed in the early stage still has a large commutation torque ripple, so it is urgent to study an electric vehicle motor with a small commutation torque ripple
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[0028] The present invention provides a four-phase electric excitation motor for an electric vehicle. In order to make the technical solution and effect of the present invention clearer and clearer, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.
[0029] figure 1 It is a schematic cross-sectional structure diagram of a four-phase electric excitation motor of an electric vehicle according to the present invention. As shown in the figure, the motor consists of a stator core (1), a rotor core (2), an excitation winding (5), an armature winding (4), The bearing and the shaft (3) are composed. The four-phase electric excitation motor of the electric vehicle has an outer rotor structure, the stator core (1) is fixed on the shaft (3), and the rotor core (2) can rota...
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The invention provides the four-phase electrical-excitation motor of an electric vehicle and belongs to the technical field of electric vehicles. The motor comprises a stator iron core, a rotor iron core, an excitation winding, an armature winding, a bearing and a shaft. The invention is characterized in that the motor is of an outer rotor structure. The rotor iron core is provided with 9k uniformly distributed convex rotor poles, wherein k is a positive integer. The stator iron core is provided with 8k convex stator poles, wherein an excitation groove is arranged at every two stator poles. An armature groove is arranged between two stator poles arranged between two excitation grooves and excitation windings are embedded inside the excitation grooves. A centralized excitation winding is wound onto each stator pole. Armature windings wound on two stator poles wound by the same excitation winding are the same in winding direction, while armature windings wound on two stator poles wound by adjacent excitation windings are opposite in winding direction. According to the technical scheme of the invention, the torque ripple of a traditional reluctance motor can be effectively reduced. Meanwhile, excitation windings and armature windings are mutually isolated, and the counter potential thereof is a sine wave.
Description
technical field [0001] The invention relates to a four-phase electric excitation motor of an electric vehicle, which belongs to the technical field of automobile electric appliances. Background technique [0002] Under the pressure of environmental pollution and energy shortage, more and more attention has been paid to electric vehicles due to their low environmental pollution and sustainable characteristics. Electric vehicles have become a research hotspot to solve today's environmental protection and energy issues. The drive motor system is one of the core components of electric vehicles. The drive motor system with high efficiency, high reliability and easy control has become a research hotspot in the field of electric vehicles. Electrically excited doubly salient pole motors have the advantages of simple rotor structure, good reliability, high power density, and adjustable excitation, so they have attracted a lot of attention from domestic and foreign scholars. [0003]...
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IPC IPC(8): H02K19/12H02K3/12H02K1/16H02K1/14
CPCH02K1/14H02K1/165H02K3/12H02K19/12H02K2213/03Y02T10/64
Inventor 咸化彩史立伟冯建勋郭盈志王可李雪峰
Owner SHANDONG JIAOTONG UNIV