基于扩张状态观测器的五相电机在单相开路故障下的低速无位置控制技术  

ESO-based Low-speeds Position-sensorless-control of a Five-phase PM Motor Under Single Phase Open Circuit

作　　者：田兵 安群涛[1] 段建东[1] 孙力[1] 赵克[1] TIAN Bing;AN Quntao;DUAN Jiandong;SUN Li;ZHAO Ke(School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, Heilongjiang Province, China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院

出　　处：《中国电机工程学报》2018年第8期2448-2457,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51207029,51507039)~~

摘　　要：为进一步增强五相电机驱动系统的可靠性,该文对单相开路故障下的无位置传感器控制技术进行研究。基于故障电机空间解耦模型,采用脉振高频电压注入法跟踪磁饱和凸极实现故障电机的无位置控制;然而由于驱动系统非线性、模拟调理电路延时、电机凸极型较弱等因素,使得故障电机在转子位置解调和观测上变得较为困难。为解决以上问题,提出一种新颖的转子位置解调方法、和基于扩张状态观测器的转子位置估算及分析方法,分别改善故障模式下五相电机的无位置控制精度和动态性能。最后,在实验平台上实施单相开路模式下的无位置控制技术,验证该方法的有效性。To increase reliabilities of five-phase（5 Ph） preferment magnet（PM） motor drives, position sensorless control was investigated considering motor faulty conditions. A decoupled model under single phase open fault was firstly introduced. And based on this model, a high frequency voltage injection method was utilized to estimate the rotor position at low speeds, where the essential spatial saliency can be explained by main flux saturation. However as discovered that sensorless control of studied motor can be failed attributed to nonlinearities of 5 Ph drive, time delay of HF current by analog circuits, weak spatial saliency, and etc.. To tackle this, we proposed a novel rotor position demodulation technique as well as an extended state observer（ESO） based method for position estimation, of which the former enhanced the performance of position error signal detection and the latter improved position observer dynamics. The faulty motor position sensorless control is tested on a 5 Ph drive platform, and effectiveness of proposed method was verified by experimental results.

关 键 词：单相开路 故障电机解耦模型 高频注入法 扩张状态观测器 转子位置信息解调 

分 类 号：TM351[电气工程—电机]