Single-Phase to Three-Phase Power Converter for Induction Motor Drive Applications

Abstract

- This paper presents an economic single-phase to three phase converter which provides variable output voltage and soft starting capability by using four high frequency switches (IGBT, MOSFET), four diodes, and a triac. This converter can run a three-phase Induction motor which is much more efficient compared to a single phase motor. In order to have a balanced output voltage in all modes of operation (start-up, speed control, and steady state) two closed loop controllers has been utilized: one for dc link voltage and the other one for inverter output. The proposed scheme with modern Constant V/F Control provides a Wide -range speed control of the induction motor. As a result, the new single-phase to three-phase converter brings the controllable output voltage as in a six-switch standard three phase inverter. The front-end rectifier has the capability of active input current shaping. In proposed work Synchronized PWM control is used in control network to improve the performance when compare with conventional methods.