电动汽车用永磁同步磁阻电机电感测试方法  

Inductancetest method of permanent magnet synchronous reluctance motor for electric vehicle

作　　者：王世伟[1] 韩雪岩[1] 李宏浩[1] WANG Shi-wei;HAN Xue-yan;LI Hong-hao(National Engineering Research Center for REPM Electrical Machines,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学国家稀土永磁电机工程技术研究中心,沈阳110870

出　　处：《电机与控制学报》2021年第6期10-17,共8页Electric Machines and Control

基　　金：国家自然科学基金(51307111);国家科技支撑计划(2015BAF06B00)。

摘　　要：基于电动汽车用永磁同步磁阻电机运行区域内磁路饱和程度与交叉磁化程度变化较大,目前没有理想的测试设备和方法能够准确地获得电机工作域内d、q轴电感参数,需要完成大量的控制器标定实验工作才可以实现最优控制。因此通过公式推导及测试方法研究,提出两种适用于这类电机的电感测试方法。一种方法是在电机无法驱动的情况下静态测试,通过对电压和电流波形的测试和计算得到电机电感值,然后采用最小二乘法对计算结果中存在的误差和奇异点进行处理,有效解决了因磁路不对称和齿槽引起的计算结果波动问题,提高了测试精确度。另一种方法是利用现代常用电机检测设备,解决电机运行时内功率因数角的测试问题,通过对电机在工作域内运行时电参数测试,计算得到不同工况下的电感参数。最后将这两种方法和伏安法测试得到的电感参数应用到同一台控制器上(MTPA最大转矩电流比控制),通过比较,证实了两种方法的适用性。Because the saturation and cross-magnetization of permanent magnet synchronous reluctance motor(PMSRM) in the operating area of electric vehicle vary greatly, there is no ideal testing equipment and method to accurately obtain the inductance parameters of d and q axes in the working region of the motor. A large number of experiments are needed to achieve optimal control. Therefore, By formula derivation and test method research, two suitable methods for this kind of motor are proposed in this paper. One method is static testing when the motor can not be driven. The inductance of the motor was obtained by measuring the voltage and current waveforms. Then the errors of calculation results were dealt by the least square method, which effectively solves the problem that the asymmetry of the magnetic circuit and the cogging groove cause fluctuation of the calculation results. Thus, the test accuracy is improved. Another method is to use common testing equipment to solve the problem of measuring the power factor angle of the motor in operation. Through testing the electrical parameters of the motor in the working region, the inductance parameters under different working conditions were calculated. Finally, the inductance parameters measured by these two methods and volt-ampere method were applied to the same controller(maximum torque per ampere,MTPA). The applicability of the two methods is verified by comparison.

关 键 词：永磁同步磁阻电机 磁路饱和 电感 交叉磁化 最小二乘法 电参数 

分 类 号：TM351[电气工程—电机]