Research on New SVPWM Control of PMSM Based on Two-Level Inverter

Permanent magnet synchronous motor (PMSM) is widely used in many fields because of its high power density, high efficiency and good control performance. Aiming at the control stability and reduce direct torque control pulsation for PMSM, based on two-level generalized inverter (TGI) technology, a new control strategy of space voltage vector modulation (SVPWM) is proposed. The principle and implementation process of applying TGI technology to PMSM motor are discussed. The switch state function table, the voltage amplitude and voltage vector partition of SVPWM are studied. Finally, the model is built and simulated on MATLAB/Simulink. Through the simulation of the motor control system, the results show that this method can effectively improve the linear modulation region of SVPWM, and prove that the SVPWM control method based on two-level generalized inverter technology has the ability to quickly obtain the system stability, which is more superior than the traditional motor control method.