Application of passivity-based and sliding mode control of permanent magnet synchronous motor under controlled voltage

Recent developments in electrical machines, power electronics, and control theories help the variable speed drive technology to offer precise speeds at every level of operation. In that same context, this study investigated on improving the performance of variable speed drive based on a permanent magnet synchronous motor by rejecting the external disturbance in speed control using the passivity-based control and sliding mode control approach. The sliding mode control approach is implemented with an exponential reaching law to improve the robustness of the system. Furthermore, a passivity-based q-axis current loop and d-axis current loop controllers are detailed. The system stability with the proposed scheme is mathematically proved using Lyapunov stability criteria. Simulation results are provided to demonstrate the superior properties of the proposed control method using MATLAB Simulink.