永磁同步电机无传感器控制算法切换策略研究  

Research on Switching Strategy of Sensorless Control Algorithm of Permanent Magnet Synchronous Motor

作　　者：曹虎 魏雄 汪志 CAO Hu;WEI Xiong;WANG Zhi(Technology Center,CRRC Qingdao Sifang Rolling Stock Research Institute Co.,Ltd.,Qingdao 266000,China;不详)

机构地区：[1]中车青岛四方车辆研究所有限公司,技术中心,山东青岛266000 [2]北京交通大学,电气工程学院,北京100044

出　　处：《电力电子技术》2020年第6期62-65,共4页Power Electronics

摘　　要：永磁同步电机(PMSM)无传感器控制由于其可靠性及成本上的优点越来越成为行业聚焦的问题,针对PMSM在各速域的不同特性,其零速、低速、中高速范围的控制方法也各不相同。实现各速域控制方法的稳定切换是无传感器算法全速域稳定控制的前提。为保证不同策略之间的平滑切换,提出了一种双滞环的切换策略,避免传统单滞环切换策略在控制中出现的反复切换问题,保证了无传感器算法的稳定性。最后基于永磁直驱电机大功率对拖平台进行实验验证,证明了该切换策略的有效性。Sensorless control of permanent magnet synchronous motor(PMSM)has become an increasingly focused problem in the industry due to its reliability and cost ad vantages.In view of the different characteristics of PMSM in each speed domain,the control methods in the range of zero speed,low speed and medium-high speed are also different.Realizing the stable switching of each speed domain control method is the premise of full speed domain stability control of sensorless algorithm.In order to ensure smooth switching between different strategies,a double hysteresis switching strategy is proposed to avoid the repeated switching problems in the control of traditional single hysteresis switching strategy and ensure the stability of sensorless algorithm.Finally,the high power permanent magnet direct drive motor is used to verify the effectiveness of the switching strategy.

关 键 词：永磁同步电机 无传感器控制 切换策略 

分 类 号：TM351[电气工程—电机]