准无位置传感器永磁同步电动机驱动系统中霍尔传感器位置检测误差的分析及解决方案

POSITION-MEASURING ERROR ANALYSIS AND SOLUTION OF HALL SENSOR IN PSEUDO-SENSORLESS PMSM DRIVING SYSTEM

结合一套只采用2个低成本霍尔传感器的永磁同步电动机驱动系统,文中分析了准无位置传感器方案中的位置检测误差,给出了误差的补偿方法。为充分抑制位置检测误差,采用了一种基于3D有限元分析的方法,评价并实际确定了永磁同步电动机中霍尔传感器的安装位置。最后通过实验证实了相关的3D有限元分析结果。

Referring to a PMSM (permanent magnet synchronous motor)driving system with only two low- cost hall sensors,We analyze the position- measuring error in one pseudo-sensorless scheme,and offer methods of error compensation.Adopting the method ology based on 3-d finite element analysis,we evaluate and locate practically the mounted positions of hall sensor in the PMSM to minimize the position-measuring error.Finally, experiments are carried out to verify the corresponding 3-d finite element analysis results.