Comparative Study of Torque Ripple Minimization of PMSM using PI and Proportional Resonant (PI-RES) Controller

Abstract

The minimization of speed ripple of the permanent magnet synchronous motors (PMSM) in low speed range becomes a major problem while applying the PMSM to refrigerant system. Earlier, an iterative learning controller was applied in conjunction with the conventional proportional integral (PI) speed controller to minimize the speed ripple. Here, a frequency variable resonance controller is applied in conjunction with the conventional proportional integral speed controller as a PI-RES controller, which provides the reference torque current. Compensation torque current generated by the resonant controller, together with the main reference current is utilized to minimize speed ripple. The results are verified through simulation.

Keywords: Permanent magnet synchronous motor, PI-RES controller, field oriented control

Cite this Article
Karthika S, Vishnu Mahesh J. Comparative Study of Torque Ripple Minimization of PMSM using PI and Proportional Resonant (PI-RES) Controller. Journal of Power Electronics & Power Systems. 2018; 8(3): 17–23p.