摘要
本文研究电感不对称对双绕组永磁同步电机基于脉振高频电压注入法的无位置传感器控制的影响。基于Ansoft/Maxwell建立有限元仿真模型,分析双绕组永磁同步电机两种工况下的电感波形。仿真结果表明由于绕组结构的非对称性,单个子电机工况下三相电感不再对称,d-q轴电感产生较大波动。理论推导了非恒值d-q轴电感条件下脉振高频电压注入法的数学模型,证明了该方法对电感波形有较高要求。通过Simulink搭建仿真模型,研究电感不对称对双绕组永磁同步电机高频注入法控制的影响,并且dSPACE实验平台上进行验证。仿真和实验结果表明,两个子电机同时运行工况下,基于脉振高频电压注入法的无位置传感器控制可以正常运行;但在单个子电机运行工况下,由于d-q轴电感存在较大波动,PLL锁相环并不能有效跟踪转子位置,导致无位置传感器控制无法正常起动。
Explored the influence of inductance asymmetry on the sensorless control of dual-winding PMSM based on pulsed high frequency voltage injection method. Based on Ansoft/Maxwell, a FEA model was established to analyze the inductance of the dual-winding permanent magnet synchronous motor under two operating conditions. Simulation results illustrate that due to the asymmetry of the topology, the three-phase inductance is no longer symmetrical under fault conditions, and the d-q axis inductance fluctuates greatly. The theoretical derivation of the mathematical model of the pulsed high-frequency voltage injection method under asymmetric inductor conditions proves that this method has higher requirements for inductance. The simulation model was built by Simulink to study the influence of inductance asymmetry on the high-frequency injection control of the dual-winding PMSM and was verified on the experimental platform based on dSPACE. The results illustrate that due to the large fluctuations in the d-q axis inductance, the PLL can’t effectively track the rotor position, that is, the asymmetry of the inductance will cause the position sensorless control based on the pulsed high-frequency voltage injection method not to be effectively applied to the dual-winding PMSM.
作者
莫晓
史涔溦
邱建琪
MO Xiao;SHI Cenwei;QIU Jianqi(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)
出处
《微电机》
北大核心
2020年第11期81-87,共7页
Micromotors
