Nonlinear Control by Input-Output Linearization Scheme for EV Permanent Magnet Synchronous Motor

Abstract

This paper presents a modern approach of speed control for permanent magnet synchronous motor (PMSM) applied for electric vehicle using a nonlinear control. The regulation algorithms are based on the input-output feedback linearization technique. The direct component of the current is controlled to be zero which insures the maximum torque operation. The near unity power factor operation is also achieved. Moreover, among EV's motor electric propulsion features, the energy efficiency is a basic characteristic that is influenced by vehicle dynamics and system architecture. For this reason, the EV dynamics are taken into account. Simulation tests have been carried out on a 19.8-kW EV PMSM drive to evaluate the consistency and the performance of the proposed control approach.