Hardware Performance Comparison of PI and Space Vector PWM Techniques for Speed Ripple Minimization in Permanent Magnet Synchronous Motor with and without Iterative Learning Control

N Lakshmi
International Research Journal of Engineering and Technology   unpublished
Permanent-magnet synchronous motor (PMSM) drives are widely used in high-performance industrial servo applications where torque smoothness is an essential requirement. However, one disadvantage of PMSM is parasitic torque pulsations, which induce speed pulsations that deteriorate the drive performance particularly at lower speeds. This paper propose the proportional plus integral controller (PI)working in transient state in parallel with Iterative learning control (ILC) working in steady state
more » ... ng in steady state with Space Vector Pulse Width Modulation (SVPWM) to suppress the speed ripples in PMSM driven by field oriented control. The speed controller compares the reference motor speed with actual motor speed, and produces the reference current iq ref value which in turn reduces the speed error. According to iq ref value SVPWM pulses are produced and given to the three phase voltage source inverter. The advantages and effectiveness of the proposed method for speed ripple reduction is designed, analysed and simulated using simulink library in MATLAB R2009a and implemented in hardware using TMS320F2812. The results obtained from PEC16DSMO1 show the significant reduction in speed ripples using proportional plus integral controller (PI) plug in Iterative learning control (ILC) with Space Vector Pulse Width Modulation (SVPWM). This method shows better speed ripple reduction in comparison with the conventional method.