Method for controlling unidirectional three phase torque switch-pulse rectifier system, involves dividing imposed output current into input current pulse so that sinusoidal current is generated after filtering harmonic oscillations

摘要

The method involves turning-off a control switch in a phase within a pulse half period at a safety interval (37) after turning on the control switch in another phase. Relative turning-off period of a blank head of an interlinked voltage (30) and free-running state of the blank head of interlinked voltage are selected so that a requested middle value of an output voltage (20) is generated. An imposed output current is divided into input current pulses so that a sinusoidal current is generated after filtering switching frequency harmonic oscillations.