电动车用永磁同步驱动电机的设计与分析

Design and Analysis of Permanent Magnet Synchronous Driving Motor Used in Electric Vehicles

为了得到一款驱动效率和电磁噪声都表现较优的电机,本文采用最大转矩电流比的控制方式以及减小铜耗的绕组方案等措施以提高效率,采用转子四段斜极的结构以降低电磁噪声。对样机进行了电磁仿真及实验测试,仿真结果和实验测试都表明该样机具有较好的噪声表现和较高的驱动效率,验证了该设计方案的合理性。

In order to get a drive motor which has a higher driving efficiency and a better electromagnetic noise performance, the MTPA （maximum torque per ampere） control mode and the winding scheme which can reduce the power loss of copper wires were used to improve the driving efficiency, besides the rotor structure with four segments of oblique magnet poles was used to reduce the electromagnetic noise. And some electromagnetic simulations and experimental tests were done on the motor, and the results of the electromagnetic simulations and experimental tests showed that the motor prototype has a better electromagnetic noise performance and a higher driving efficiency, which verified the rationality of design scheme.