High Performance Control of PMSM Drive System Implementation Based on DSP Real-Time Controller

Abstract

This paper presents the high performance control of PMSM drive system implementation based on DSP real-time controller. The high performance drive is used in applications that need to high precision accuracies such as CNC machines and servo applications. The proposed high performance PMSM drive system consists of PMSM, three-phase voltage-source inverter based on space-vector pulse-width modulation (SVPWM), field-oriented control scheme, intelligent fuzzy logic speed controller and PI current controllers. The PM servo motor is controlled to produce a constant torque through changing the voltage/frequency ratio. The three-phase inverter based SVPWM technique supplies the PMSM with a high voltage and low harmonics. The proposed drive system is based on indirect field-oriented control to decouple the torque and flux currents which mimic the behavior of the DC-machines. The advantages of Fuzzy Logic Controller (FLC) overcomes the slow response and tuning problems of the conventional PI speed controllers without any mathematical calculations. The Dspace Real-Time controller is used to solve the control programs. The different parts of the proposed drive system are designed and tested. The advantages of the proposed drive system are confirmed by the practical results.