Permanent Magnet Synchronous Motors (PMSM) are widely used in industrial applications, such as robots, and hybrid vehicle. PMSM has a high performances, very good controllability in full speed operating range, high efficiency (Lyshevski, (2000)) and small size in comparing with other motor types. For these properties, PMSM has become the preferred choice for hybrid electrical vehicle in order to use power more efficiently, due to the increasing demand and price of fuel and environmental regulation.
Field Oriented control (FOC) or Vector Control is the most efficient method of control PMSM. To implement the control theory, PMSM must power by inverter, such as voltage source inverter, in order to control the magnitude, phase, and frequency of the stator current waveform. Furthermore, the field oriented control requires the PMSM model in rotating “dq0” coordinate frame for implementing its theory.
Objective of this research is to control the speed of PMSM using FOC theory. Consequently, FOC needs two PI controller to regulate and one to regulate the speed. Therefore, designing FOC in which designing the SPWM, Clark and Park transformation, Three Phase Inverter and tuning PI controllers are the major goal of this investigation for controlling the speed Of PMSM. Initially, PI controllers and system responses are computed by using MATLAB simulation. Using frequency response and symmetric optimum tuning methods, PI controllers are calculated from closed loop system. In conclusion, the Field Oriented Control is designed and the system response is obtained for the speed control of PMSM using FOC in MATLAB Simulink.