Sliding mode speed control of a shifted fully pitched switched reluctance machine

An experimental speed control drive system for the shifted WIN pitched switched reluctance machine, using the C167 embedded controller, is presented. Methods of speed control and acceleration estimation are discussed. System performance is tested for speed step change, speed reversal, speed tracking and load disturbance responses using proportional plus integral (PI) control and sliding mode (SLM) control. A comparison between proportional plus integral and sliding mode speed control, using Slotine's approach, is experimentally carried out and the robustness of sliding mode control is shown.