基于高频正交方波注入法的永磁同步电机控制研究  

Permanent magnet synchronous motor based on high-frequency orthogonal square wave injection method

作　　者：周林[1] 林珊 王孝洪[1] 连维钊 ZHOU Lin;LIN Shan;WANG Xiaohong;LIAN Weizhao(Key Laboratory of Autonomous Systems and Networked Control,Ministry of Education,South China University of Technology,Guangzhou 510640,China;Guangzhou Metro Design and Research Institute Co.,Ltd.,Guangzhou 510010,China)

机构地区：[1]华南理工大学自主系统与网络控制教育部重点实验室,广东广州510640 [2]广州地铁设计研究院股份有限公司,广东广州510010

出　　处：《电机与控制学报》2024年第2期64-74,共11页Electric Machines and Control

基　　金：国家自然科学基金(62173150);广东省基础与应用基础研究基金(2022B1515120003);佛山市顺德区科技创新项目(2230218004224);珠海市产学研合作项目(ZH22017001210116PWC)。

摘　　要：针对传统高频注入法解调过程复杂和观测精度受非理想因素时延影响的不足,提出一种基于高频正交方波注入法的零低速位置估计方法。首先,考虑估计旋转轴系注入的低可靠性,选择将高频信号注入静止轴系,采用简单代数运算提取出高频响应电流,通过解调正向虚拟高频响应电流初步估计转子位置;然后,针对主要非理想因素进行影响分析,在此基础上,通过解调负向虚拟高频响应电流提取出相位滞后角,完成补偿;最后,为避免启动阶段位置收敛错误,通过获取电感变化趋势判断出磁极极性。实验结果表明,所提算法在各类工况均能稳定收敛,且最大平均误差不超过1°,说明了算法的抗扰性以及准确性。A zero-low speed position estimation method based on high frequency(HF)orthogonal square-wave injection was proposed to address the drawbacks of conventional HF injection method,such as the complexity of demodulation process and the observation accuracy being degraded by time delay caused by the nonideal factors.Firstly,considering the low reliability caused by injection into RRF,the HF signal was injected into SRF.A simple algebraic operation was used to extract the HF response current,and the preliminary rotor position was estimated by calculating the HF response currents on the positive virtual rotating axis.Then,on the basis of analyzing the effects of the main nonideal factors,the compensation was completed by calculating the HF response currents on the negative virtual rotating axis.Finally,to avoid position convergence errors during startup,the magnetic polarity was determined by obtaining inductance variation trend.The experimental results show that the proposed algorithm can converge stably under various operating conditions,and the maximum average error does not exceed 1 degree,indicating the practicability and accuracy of the algorithm.

关 键 词：永磁同步电机 无位置传感器控制 正交方波注入法 误差分析 时延补偿 磁极辨识 

分 类 号：TM341[电气工程—电机]