传统的基于转矩分配函数（TSF）的开关磁阻电机（SRM）控制策略存在电流跟踪效果较差和转矩脉动高的问题。为此提出一种变占空比的控制方法。该方法结合电流滞环和脉宽调制（PWM）技术，根据电感的线性模型特性进行区间分段，然后通过改变不同区间上PWM的占空比来调节绕组两端的电压，达到精确跟踪电流和抑制转矩脉动的目的。对改进后的控制方法进行了仿真和试验验证,结果表明：与传统控制方法相比，改进后的控制策略具有更小的电流跟踪误差和转矩脉动。

Aiming at solving the problem that the traditional torque sharing function (TSF) control strategy of the switched reluctance motor (SRM) has the disadvantages of poor tracking performance of phase current and high torque ripples, an optimized TSF-based pulse width modulation (PWM) variable duty cycle control of the SRM is proposed. In this method, PWM and hysteresis control are combined, and the control process is sectioned based on the linear inductance model characteristics. The winding voltage is adjusted through changing the PWM duty cycle of different intervals, so as to achieve excellent current tracking and suppress torque ripple. Simulation and experimental results further verify the effectiveness of the proposed method. In comparison with the traditional TSF control strategy, the optimized control method has less current tracking error and lower torque ripple.

国家自然科学基金项目（51609033）；辽宁省自然科学基金项目（20180520005）