Simulation and Experiment Research on 3-Phase Asynchronous Motor Softstarting and Energy-saving Control

Using the SABER simulation software, this paper is focused on the effect of the input voltage on the motor´s energy loss and power factor in 3-phase AC voltage regulation circuit, which is regulated by the control angle of the SCR. Simulation and experiment results are given. It is proved that using this simple voltage regulation circuit can adjust the motor´s terminal voltage, satisfy the requirement of soft-starting, and simultaneously save energy by using a proper algorithm (constant power factor algorithm to control the firing angle of SCR)