基于有效磁链观测器的永磁压缩机无传感器控制策略  

Sensorless Control Strategy Based on Effective Magnetic Flux Observer for Permanent Magnet Compressor

作　　者：付兆强 韩佳健 呼子茗 甄锦鹏 张国强[2] 王高林[2] FU Zhaoqiang;HAN Jiajian;HU Ziming;ZHEN Jinpeng;ZHANG Guoqiang;WANG Gaolin(Guangdong Midea Air-Conditioning Equipment Co.,Ltd.,Foshan 528311,Guangdong,China;School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

机构地区：[1]广东美的制冷设备有限公司,广东佛山528311 [2]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电气传动自动化》2024年第5期1-5,10,共6页Electric Drive Automation

基　　金：国家杰出青年科学基金(52125701)。

摘　　要：传统永磁同步电机无传感器控制算法通常利用反电动势或磁链观测器实现转子位置观测,在运行转速较低时低信噪比导致基于反电动势的观测器性能下降;相比之下,磁链观测器在低速时的性能更好。本文研究基于有效磁链模型的永磁同步压缩机无传感器控制算法,通过对有效磁链定向可直接获取转子位置观测信息。首先针对开环磁链法容易受电机参数影响的问题,构建基于电压电流混合模型的闭环有效磁链观测器;其次对闭环磁链观测器的PI参数进行设计,并利用归一化正交锁相环实现转子位置观测。最后,在永磁同步压缩机实验平台验证所提方法的有效性。In traditional sensorless control strategy of permanent magnet synchronous motor(PMSM),rotor position is usually observed by back electromotive force(EMF)or flux linkage.The low signal-to-noise ratio at low operating speed leads to the deterioration of the observer based on EMF.In contrast,the flux observer performs better at low speeds.This paper studies the sensorless control of permanent magnet synchronous compressor based on the active flux,and the rotor position can be directly obtained by orienting the active flux.In order to solve the problem that open-loop flux observer is easily affected by motor parameters,a closed-loop active flux observer based on the hybrid model of voltage and current is constructed.Then,PI parameters of the closed-loop flux observer are designed,and the rotor position observation is realized by using normalized orthogonal phase-locked loop.Finally,the effectiveness of the proposed strategy is verified on an experimental platform of permanent magnet synchronous compressor.

关 键 词：永磁压缩机 无传感器控制 有效磁链 电压电流混合模型 

分 类 号：TM28[一般工业技术—材料科学与工程]