PI and PI Antiwindup Speed Control of Switched Reluctance Motor (SRM)

SRM is nonlinear system. This study discusses the SRM speed control as the main driving force for electric vehicles using linear approach. The SRM used in this paper has a narrow input saturation range. SRM only rotates at the PWM value of 72-84 or the equivalent input voltage to the SRM driver of 1.446 volts - 1.753 volts. At the PWM value of 0-71 and PWM 85-255, the SRM does not rotate (dead zone). This study discusses the design of SRM speed control with PI and PI Antiwindup (PI AW) methods in that narrow input saturation range. The design is done by modelling the system in the SysId MATLAB by looking at the SRM response when PWM input is given. A first-order dynamic model is obtained from the identification results with the SysId MATLAB. The controller design is carried out analytically. At the implementation stage, the control signal used is only a positive control signal that makes the motor rotate without any braking effect. The results of the implementation of PI and PI AW are compared to see the performance of the two controllers. From the simulation and implementation, data is obtained that the designed control system can control the SRM speed in reaching the steady state value, the overshoot value and the steady state error leading to 0%. PI AW controller has better performance than PI controllers in terms of settling time and overshoot percentage. The PI controller has a slight advantage at steady state error over the PI AW controller.