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Soft starting control scheme for three-phase induction motor fed by PWM AC chopper
Author(s)
Date Issued
January 1, 2014
Type
Conference Paper
Abstract
This paper presents a soft starting control scheme of a three-phase induction motor using a PWM AC chopper technique to reduce the magnitude of currents during a start up process. To control bidirectional power switches in the PWM AC chopper, a PWM signal is generated by a single voltage signal, and compared with a single carrier signal. By this approach, the PWM signal is independent since the PWM signal does not need to be synchronized with three-phase voltages from a source. Details of the control scheme are discussed. Simulation results of the starting currents using this control technique are shown, and it is found that the control scheme can be employed in the PWM chopper in order to limit the amplitude of the starting currents.
Citation
2014 17th International Conference on Electrical Machines and Systems Icems 2014, 92-95, 2014