一种基于脉振高频电压注入法的转子位置检测方法

在基于脉振高频电压注入法的内置式永磁同步电机(IPMSM)无位置传感器控制中,使用滤波器提取转子位置信息影响了系统动态性能。提出一种基于二阶广义积分器(SOGI)的转子位置检测方法。利用SOGI构建位置观测器,简化系统参数整定过程,动态过程中可以更加准确地提取转子位置信息,有效地减小了转子位置动态估计误差,最后仿真结果表明该方法改善了系统的控制性能。

A Rotor Position Detection Method Based on High-frequency Pulsating Voltage Injection

In high frequency pulsating voltage injection based sensorless control of interior permanent magnet synchronous motors(IPMSM),the filters influences the dynamic performance of the system in the process of extracting rotor position information. A novel rotor position estimation scheme was proposed which based on the second-order generalized integrators(SOGI). A new position observer was made up of the SOGI,which made the process of the system parameters setting easier. In the dynamic process,it could extract the rotor position information more accurately and reduce the dynamic rotor position estimation error effectively. The result of the IPMSM simulation verifies that the method can improve the control performance of the system.