Hybrid Pi-Fuzzy speed controller for interior permanent magnet Synchronous Motor

Abstract

Interior Permanent Magnet Synchronous Motors (IPMSM’s) are used for fast torque response and for better performance of the machine. IPMSM's are used in low and mid power applications such as computer peripheral equipments, robotics, adjustable speed drives and electric vehicles and in servo applications. In this paper, a simulation model has been developed for speed control and improvement in the performance of a closed loop vector controlled IPMSM drive which employ two loops for better speed tracking and fast dynamic response during transient as well as steady state conditions by controlling the torque component of current. A fuzzy control technique has been designed. PI-FLC has also been designed for effective speed control under transient and steady state conditions. This thesis gives the detailed modeling of an Interior Permanent Magnet Synchronous Motor drive system in Simulink. Simulation results are presented to help analyze the system performance and PI controller parameters influence on the system performance. The analysis has also been performed with fuzzy logic controller as well. Finally analysis has been carried out by hybrid PI Fuzzy logic controller (PI-FLC) under no load, variable speed condition and variable load conditions separately to show the results.