基于无滤波器高频方波注入的IPMSM无传感器控制策略  

A Position Sensorless Control Strategy of IPMSM Based on Filterless High Frequency Signal Injection

作　　者：傅睿潇 黄守道[1] 王海龙[1] 王家堡[1] FU Ruixiao;HUANG Shoudao;WANG Hailong;WANG Jiabao(Hunan University,Changsha 410000,China)

机构地区：[1]湖南大学,长沙410000

出　　处：《大电机技术》2018年第6期6-11,共6页Large Electric Machine and Hydraulic Turbine

基　　金：湖南省自然科学基金资助项目(2018JJ3057)

摘　　要：本文提出了一种基于静止坐标系的高频方波电压注入方法。该方法是通过在α(β)静止坐标轴系中注入高频方波电压,从而得到高频电流响应来估算永磁同步电机的转子位置。该方法采用高注入频率,从而可以减少转子电阻的影响,提高估计精度。其次,该方法在信号处理过程中无需滤波器的使用,因此控制系统的带宽得到了提升。此外,为准确地估计转子位置,本文采用了比传统PI观测器的估计精度更高、抗扰动能力更强的扩张状态观测器(Extended State Observer,ESO)。最后,在一台1.5kW的内置式永磁同步电机上进行了实验,实验结果证明了在低速情况下本文提出的无传感器控制方法能取得优异的结果。A high frequency square wave voltage injection method based on stationary reference frame is proposed.By injecting the high-frequency square-waveform voltage into theα-(orβ-)axis of the stationary reference frame,and the rotor position is calculated by the response high-frequency carrier current.The method greatly increases the injection frequency and can completely reduce the effects of rotor resistance.This method can avoid the use of filter,hence greatly increase control system bandwidth.Extended state observer(ESO)is also used to estimate rotor position and improve the accuracy of position estimation,and anti-disturbance ability.The experimental results demonstrated the feasibility of the proposed sensorless strategy by a 1.5kW IPMSM.

关 键 词：内置式永磁同步电机 无位置传感器 高频注入 低速 ESO 

分 类 号：TM351[电气工程—电机]