Adaptive backstepping based nonlinear control of an IPMSM drive

This paper investigates the performance of a novel speed control scheme for an interior permanent magnet synchronous motor (IPMSM) based on a newly developed nonlinear adaptive control scheme. The system model equations provide the basis for the controller which is designed using adaptive backstepping technique. Using Lyapunov's stability theory, it is also proved that the control variables are asymptotically stable. The complete system model is developed and then simulated using MATLAB/Simulink software. Performance of the proposed controller is investigated extensively at different dynamic operating conditions such as sudden load change, command speed change and parameter variations. The results show the global stability of the proposed controller end hence found to be suitable for high performance industrial drive applications.