A very simple fuzzy control system for inverter fed synhronous motor

This paper deals with fuzzy logic control of inverter fed synchronous motor. In this paper mathematical model of the motor drive system and stability condition of fuzzy logic control algorithm are represented. The essential fuzzy logic control configuration system consists of an internal current regulation loop and an external speed regulation loop. PID controller generally controls the speed and current loop in these systems. To control a inverter fed synchronous machine a host computer and a special microprocessor system with dSPACE 1104 central unit as a micro-controller is used. Most important results of our investigation is to find a simply mathematical model of our motor drive system. Then stability conditions are determined for current and speed controller. The simulated results were compared during the laboratory test on 600 W synchronous motor.