H2 control based on LPV for speed control of permanent magnet synchronous motors

Abstract

This paper presents H₂ control based on linear parameter varying (LPV) systems for speed control of permanent magnet synchronous motors(PMSMs). PMSMs model is rewritten in LPV systems which depend on online accessible time varying parameters given by real time information. Since the PMSM nonlinear model can be transformed into LPV systems, we design H₂ control with gain scheduling. The proposed method obtains both improvement of transient response in the speed control and reduction of energy consumption. Finally, simulation results are performed to validate that the proposed method has good performance of transient response and efficient energy consumption as compared with conventional field oriented control.