The research on the current source controller of induction motor

Abstract

This paper discusses the main circuit topology and control method of current source controller(CSC) for a three-phase induction motor. In the circuit, the three phase AC power supply is taken as the input part of CSC, which is rectified into three phase controlled rectifier. In DC circuit, the DC bus inductor is utilized to store energy and filters harmonic so that the circuit is shown as the current source character. The DC bus current used Space Vector PWM(SVPWM) method is converted to three phase AC current. SVPWM driving pulses of the three value logic eventually are obtained through the zero state distinction and two-three value logic transformation. Meanwhile, MATLAB/Simulink tools are used to finish the simulation on the control system, and the simulation results are consistent with the experimental results.