Development of an Adaptive Backstepping Based Nonlinear Control of an Induction Motor Incorporating Iron Loss with Parameter Uncertainties

Neglecting the iron loss in an induction motor model causes performance deterioration and there has been research to investigate and deal with this problem in the vector control of an induction motor. However, little work has been done in the area of nonlinear control of an induction motor. In this paper, an adaptive backstepping based nonlinear controller incorporating the iron loss is developed under the parameter uncertainties. To reduce the complexity in design of the controller, the motor model is referenced to the rotor magnetizing current and the controller is developed in the rotor flux oriented control scheme. Simulation results show that the proposed controller achieves rotor speed and magnetizing current tracking objectives successfully and improves dynamic responses compared to the one without considering the iron loss