针对开关磁阻电机在大电流下因磁路饱和造成转子位置估计不准确问题，提出一种基于全周期电感交点与电感阈值相结合的转子位置估计法。该方法在高电感区设定相应相电感阈值，当电感处于非磁路饱和时，高电感区电感交点脉冲与设定相电感阈值脉冲采取相“与”的方式获取高电感位置估算脉冲；而当电感处于磁路饱和时，将所设定的电感阈值脉冲作为高电感区位置估算脉冲，然后通过相邻脉冲信号估计出电机转速和转子位置。最后通过仿真对该方法的正确性进行验证。

In view of the inaccuracy of rotor position estimation of switched reluctance motor (SRM) due to the magnetic circuit saturation under the condition of high current, a rotor position estimation method based on the combination of full cycle inductance adjacent intersection and inductance threshold is proposed. This method sets the corresponding phase inductance threshold value in the high inductance area. When the inductance is in the non magnetic circuit saturation, the “and” method is used to obtain the high inductance position estimation pulse between the intersection point pulse and the set phase inductance threshold pulse. When the inductance is in the magnetic circuit saturation, the set inductance threshold pulse is used as the high inductance position estimation pulse, and then the motor speed and rotor position are estimated by the adjacent pulse signals. Finally, the correctness of the method is verified by simulation.

陕西省科技厅工业攻关项目(2016GY-064)