Analysis of FUZZY-PI and PI Control Strategies for Permanent Magnetic Synchronous Motor Drive

Abstract

Permanent magnetic synchronous motor (PMSM) drive is one of the very famous AC motor drives in the industry. This motor is being used in various platform because of its most advantageous compared to other AC drives like small in size, light weight, wide speed range, high power factor, high efficiency and large overload capacity. An approach for PMSM drive to control the drive using space vector pulse width modulation (SVPWM) technique is used based on the field orientation control (vector control). As the PMSM-drive is having characteristic of non-linearity, strong coupling and time-varying parameters which is not self-tuning for PI controller with the variable system states as PI controller comes with a large overshot, steady state error, torque ripples and slow response with variable states which has been overcome in this paper using FUZZY-PI controller. This paper proposes the Fuzzy PI controller with changing PI online accordingly with the system states, this is then compared with the standard PI controller. The simulation result has been showed for the speed and torque dynamics of the PMSM drive for comparison.