Simplified Sliding Mode Speed Control Based on Singular Perturbation Theory for Induction Motor

Abstract

In this paper, we propose sliding mode velocity controller based on singular perturbation for induction motors to improve velocity tracking performance. By using singular perturbation theory, we design input voltage to ensure that the boundary-layer system is globally exponentially stable. The reduced-order model is obtained by using the quasi-steady state. Then, sliding mode velocity and flux control are proposed to improve velocity and flux tracking performance. Simulation results validate the effectiveness of the proposed method.