Model Predictive Control with Reduced Integration Step Size of a Switched Reluctance Drive

The problem of torque pulsation and its stabilization by means of control is typical for switched reluctance drives. This drives usually controlled using hysteresis current regulators, which produce audible noise and torque ripple. The method of model predictive control with reduced integration step size was introduced in order to implement precise torque stabilization using pulse width modulation. Active thermal control was developed as well to increase the continuous output power of the drive. The developed control strategy was simulated and shows accurate torque regulation even when only few integration steps inside single PWM cycle are used for duty cycle evaluation. Active thermal control reduced the temperature of the hottest power module by 7.4%, which allows to increase the continuous output power of the drive.