响应面法在自启动永磁同步电动机转矩特性研究中的应用

Application of Response Surface Method in Torque Characteristics Research of Line-Starting PMSM

针对自启动永磁同步电动机(LSPMSM)高转矩密度设计,以一台280 kW LSPMSM为例,首先基于场-路结合的方法对样机交、直轴电感参数、额定转矩和峰值转进行计算,探究转矩角对其转矩的影响。之后分别从转子减重孔距转子内径距离、永磁体间夹角、槽形和材料等角度,分析其与电动机的峰值转矩关系。最终,运用响应面法对多参数对峰值转矩的影响进行分析,得到电动机最优方案。为同类电机的转子设计提供准确的参考依据。

For the design of high-torque density in the line-starting permanent magnet synchronous motor(LSPMSM),this paper takes a 280 kW LSPMSM as an example to firstly calculate the alternating-and direct-axis inductance parameters,rated torque and peak torque of the prototype based on a field-circuit integrated approach,and explores the influence of torque angle on its torque.Subsequently,this paper analyzes the relationship between it and peak torque of motor from aspects of the distance between weight reduction hole and inner diameter of rotor,the angle between permanent magnets,the slot shape and the materials.Finally,this paper analyzes the influence of multiple parameters on peak torque by response surface method to obtain the optimal design of the motor.It provides an accurate reference basis for the rotor design of similar motors.