基于双dq空间的永磁同步电机无位置传感器起动策略  

Position-Sensorless Startup Strategy for Permanent Magnet Synchronous Motor Based on Double dq Space

作　　者：刘计龙[1] 肖飞[1] 麦志勤[1] 张伟伟[1] 连传强 Liu Jilong, Xiao Fei , Mai Zhiqin , Zhang Weiwei, Lian Chuanqiang(National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan 430033 Chin)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《电工技术学报》2018年第12期2676-2684,共9页Transactions of China Electrotechnical Society

基　　金：国家重点基础研究发展计划(973计划)(2015CB251004);中国博士后科学基金(2017M613371)资助项目

摘　　要：不依赖电机转子位置检测的永磁同步电机流频比控制(IF控制)是一种无位置传感器起动策略,但由IF控制到基于磁链观测器的无位置传感器控制的平滑切换算法比较复杂,且切换瞬间非常容易引起电流的短时高频振荡。针对这一问题,提出一种基于双dq空间的永磁同步电机无位置传感器起动策略,分别在虚拟同步坐标系和转子同步坐标系下建立两个dq空间,在两个dq空间下分别建立电机的状态变量和控制变量,将两种控制策略之间的切换转化为两个dq空间的切换。双dq空间对应同样的三相静止坐标系,从而实现IF控制向磁链估计法的无缝切换。给出了基于双dq空间无位置传感器控制的实验结果,验证了该起动策略的有效性。Current-frequency control（IF control） for permanent magnet synchronous motor（PMSM） independent of the rotor position signal is a position-sensorless startup strategy. However, the transition from IF control to other position-sensorless control strategy is complicated, the scheme transition can cause current oscillation in a short time. Therefore, a novel position-sensorless startup strategy with double dq space is proposed. Two dq spaces are established in virtual synchronous frame and rotor synchronous frame respectively. The state variable and control variable of PMSM are established in the two dq spaces respectively. The transition of two control schemes changes into the transition of two dq spaces. The double dq space corresponds with the same three-phase stationary frame. Thus, the smooth and seamless transition of the two control schemes is achieved. Experimental results have verified this startup strategy.

关 键 词：永磁同步电机 起动策略 IF控制 双dq空间 

分 类 号：TM351[电气工程—电机]