基于改进型扰动观测器的IPMSM无传感器控制  

Sensorless Control of IPMSM Based on Improved Disturbance Observer

作　　者：周静[1] 杨振强[1] 王继超 ZHOU Jing;YANG Zhen-qiang;WANG Ji-chao(Dalian University of Technology,Dalian 116024,China;31696 troops of the PLA,Jinzhou 121017,China)

机构地区：[1]大连理工大学 [2]中国人民解放军31696部队

出　　处：《微特电机》2018年第7期71-75,共5页Small & Special Electrical Machines

摘　　要：针对传统的内置式永磁同步电机模型复杂,用于转子位置信息估计的观测器设计与调试复杂,估算精度低等问题,研究了一种基于改进型扰动观测器的控制系统。观测器将合成反电动势作为扰动量,建立了内置式永磁同步电机的扰动观测模型,利用中间变量转换,简化了观测器的设计,估算出了合成反电动势。根据估算结果,经过锁相环并进行相应的相位补偿,得到了准确的转子位置信息。通过仿真确定了观测器增益,并对不同状态下的系统波形进行分析。结果表明,基于改进型扰动观测器的内置式永磁同步电机无位置传感器控制调试简单,估算精度高,鲁棒性强,动态性能良好,具有较高的应用价值。A control system based on improved disturbance observer was studied. In view of the complexity of the traditionalbuilt in IPMSM, the design and debugging of observer for rotor position information was complex, and the estimationaccuracy was low. Disturbance observation model for IPMSM was built based on synthetic back electromotive force （ EMF）.This model using intermediate variables was capable of estimating the synthetic back EMF and simplifying the model. Accordingto the estimated results, the accurate location information was obtained by the phase locked loop （PLL） and phasecompensation. The observer gain was determined by simulation and the waveform of the system in different states was analyzed.The simulation results show that the sensorless IPMSM control system achieves high performance and has high applicationvalue.

关 键 词：内置式永磁同步电机 改进型扰动观测器 合成反电动势 中间变量 无位置传感器 

分 类 号：TM351[电气工程—电机]