Dynamic Hysteresis -Loop Controller for Direct Instantaneous Torque Control of Four Phases Switched Reluctance Motors

A direct instantaneous torque controller for four phases switched reluctance motors is proposed based on analysis and evaluation of the torque generation capability at different phase positions. To reduce the torque ripple, communication control for the maximum torque capability is expected and performed by a dynamic hysteresis-loop controller. Without extra optimization of the switch off angle, the method is easy for implementation. It is proved by simulation that the reference torque is tracked with fast response and small ripple.