Abstract:

The vector control system of PMSM(Permanent Magnetic Synchronization Motor) has a wide application prospect in the fields of industrial control and medical treatment etc. The simulation research of vector control PMSM system can provide methods for PMSM vector control system design and realization. This thesis involves in simulation research of PI(Proportion Integration) adjustment, speed loop modulation and dq／αβ transformation, gaining SVPWM (Space Vector Pulse Width Module) waves and main loop based on module structure under the environment of MATLAB／SIMULINK. Scope space was used to observe the stator current, rotating angle, revolution speed of rotator and rotating of torque. Through adjusting the model parameters timely, vector control and velocity modulation of PMSM was realized. The simulation results indicat that vector control system has the characteristics of fast speed up, strong overload capacity and ideal speed adjustment.

Key words: permanent magnetic synchronization motor(PMSM) vector control, Simulink, dq／αβ transformation