永磁同步电机转子位置的无传感器自检测

介绍了一种基于电机空间凸极追踪的转子位置无传感器自检测的方法.该方法采用高频电压载波注入方式形成高频电流矢量,其负序分量包含了转子空间位置信息.通过采用外差法的转子位置跟踪观测器完成了转子位置信息的提取,实现无机械位置传感器的电机转子位置的检测.对空间凸极追踪的转子位置检测原理、转子位置跟踪观测器的结构以及内插式永磁同步电机转子位置检测过程的仿真研究进行了详细介绍,仿真结果验证了该方法正确和可行的

Rotor position sensorless estimation for permanent magnet synchronous motors

A novel rotor position self-sensing method, based on the spatial saliency tracking scheme, was presented. The method employed high-frequency voltage-signal injection to make motor form a high-frequency current-vector, of which the negative component current contained rotor space-position information. By rotor position tracking observer, with heterodyning processing adopted, the rotor position signal can be picked up and then the self-sensing of the rotor position can be implemented without any specialized mechanical position-sensor. The sensing principle of the spatial saliency tracking scheme, the structure of the rotor position tracking observer and the simulation study for the rotor position self-sensing process of an IPM(Insert Permanent Magnet) synchronous motor were all discussed in detail. Simulation results verified the correctness and availableness of this approach.