永磁同步电机运行性能研究

针对凸极永磁同步电机,对其数学模型和定子电流最小控制方法进行了介绍,推导了定子电流最小控制方法对应的电流相角条件、基本转速和最大转矩。利用电机数学模型和不同电流控制规律建立了永磁同步电机运行性能仿真模型,避免了传统双闭环模型中控制器参数对仿真结果的影响。在此基础上深入研究了电机永磁磁链、凸极率、电枢电阻三个参数对电机基本转速、输出转矩等运行性能的影响,据此指出了电机电磁设计时应遵循的一般规律。

Performance study of permanent magnet synchronous motor

A mathematic model for salient pole permanent magnet synchronous motor as well as the stator current minimum control methods were introduced,which facilitated the establishment of simulation model for permanent magnet synchronous motor to investigate the operating performances and the confirmation of the respective current phase control condition,basic speed and maximum torque for stator current minimum controls well.The motor mathematical model and different current control rules are combined to set up the simulation model to avoid the influence of controller parameters on the experiment results.The effects of such three parameters as motor permanent magnetic flux, saliency ratio,and armature resistance on motor operating performance such as basic speed and output torque and so on were deeply investigated and with these results the rules should be followed in motor electromagnetic design were pointed out.