基于位置误差补偿的PMSM无感控制策略  

PMSM Senseless Control Strategy Based on Position Error Compensation

作　　者：鲁飞 张可可 李宾皑 LU Fei;ZHANG Keke;LI Bin'ai(East China Power Transmission and Transformation Engineering Co.,Ltd.,Shanghai 201803,China;State Grid Shanghai Electric Power Company,Shanghai,200122)

机构地区：[1]华东送变电工程有限公司,上海201803 [2]国网上海市电力公司,上海200122

出　　处：《大电机技术》2024年第5期111-116,127,共7页Large Electric Machine and Hydraulic Turbine

基　　金：国网上海电力公司科技项目(520900220016)。

摘　　要：滑模观测器对扰动和系统模型的不确定性有较强的鲁棒性,是永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)无感控制系统的常用方法。为了降低滑模观测器的抖振,通常将原有的符号切换函数换成带有边界层的切换函数,如sigmoid之类的双曲型函数。这类方法能有效减小抖振,却增大了转子位置估计误差。本针对该类函数的缺点以及低次谐波所带来的相位滞后问题,设计了一种带补偿的二阶锁相环,以减小观测器的位置估计误差。通过MATLAB/Simulink搭建仿真平台,验证了该方案能有效减小转子位置估计误差。Sliding mode observer is a commonly used method for sensor-less control systems of permanent magnet synchronous motors(PMSM)due to its strong robustness to disturbances and system model uncertainties.In order to reduce the chattering of the sliding mode observer,the original coincidence switching function is usually replaced with a switching function with a boundary layer,such as a hyperbolic function like sigmoid.This type of method can effectively reduce chattering,but increases the rotor position estimation error.A second-order phase-locked loop with compensation is designed to address the rotor position estimation error caused by this function and actual system sampling.Build a simulation platform using MATLAB/Simulink to verify that this scheme can effectively reduce rotor position estimation errors.

关 键 词：永磁同步电机 无传感器控制 估计位置补偿 二阶锁相环 

分 类 号：TM35[电气工程—电机]