低速电动汽车用分数槽内置式永磁同步主驱电动机设计

Design of Permanent Magnet Synchronous Main Drive Motor with Fractional Slot for Low Speed Electric Vehicle

针对低速电动汽车的主要设计指标,设计了一台低速电动汽车用的主驱电动机,采用分数槽的槽极配合方式,分析了影响永磁同步电动机调速区效率的因素,对电动机的转子结构进行了优化,对设计方案建立有限元模型,验证电动机的电磁方案满足设计要求,并且对电动机方案建立热路模型,进一步验证了样机模型设计的合理性。

According to the main design indicators of low-speed electric vehicles, a main drive motor for low-speed electric vehicles is designed, which adopts the slot-fitting slot matching method. The factors affecting the efficiency of the permanent magnet synchronous motor speed control zone are analyzed. The rotor structure of the motor is optimized. A finite element model is established for the design scheme to verify that the electromagnetic scheme of the motor meets the design requirements. The thermal path model is established for the motor scheme, which further verifies the rationality of the prototype model design.