图解霍尔位置偏离对直流无刷电机性能的影响

Diagrammatizing the Impact of Hall Elements Deviation on Brushless DC Motor

霍尔位置传感器作为无刷直流电动机组件,主要作用是检测转子相对于定子绕组的位置,并输出信号控制电机绕组以"两相导通星型三相六状态"方式工作。霍尔位置偏离对电机的输出性能会造成一定的影响。以图解方式讨论霍尔位置偏离导致的电流超前导通和滞后导通时电机输出性能的差异,并采用有限元分析软件Ansys进行仿真,以验证霍尔元件位置偏离对电机转矩脉动和转速的影响。

As one of the most important component parts of Brushless DC motors,Hall element is used to detect the position of the rotor relative to the stator,then provide signal to control motor winding operated in a ＂two-phase conduction star three-phase six state＂ mode.Hall element′ position deviation does have an effect on the output properties of the motor.This article illuminates the difference of motor′s properties between current phase advance situations and current phase lag situations caused by Hall elements deviation graphically.According to the simulation analysis of finite element analysis software ANSYS,the change of mechanical properties of the motor caused by Hall elements deviation are analyzed accordingly.