PERMANENT MAGNET SYNCHRONOUS MOTOR DRIVE SYSTEM FOR MECHATRONICS APPLICATIONS

Abstract

In this paper, a field oriented controlled PM motor drive system is described and analyzed due to its importance in many applications especially in mechatronics applications. Permanent Magnet Synchronous Motors (PMSM) are widely applied in industrial and robotic applications due to their high efficiency, low inertia and high torque – to – volume ratio. A closed loop control system with a PI controller in the speed loop has been designed to operate in constant torque angle and flux weakening regions. A comparative study of hysteresis and PWM control schemes associated with current controllers has been made. Then, the simulation of a field oriented controlled PM motor drive system is developed using Simulink. The simulation circuits for PM synchronous motor, inverter, speed and current controllers include all realistic components of the drive system. Simulation results for both hysteresis and PWM control schemes associated with current controllers are given for two speeds of operation, one below rated and another above rated speed.