Conversion of Single Phase AC to Three Phase AC Supply

Abstract

This paper presents a simple converter topology for driving a load with a single-phase AC supply. Using only six active switch IGBT's(FGH40N60SFD). The converter supplies balanced output voltages at rated frequency, the proposed control approaches are supported by test results. The convertor takes single phase supply and converts it into three phase supply with the help of thyristors. The single phase supply is first converted into dc supply by using rectifier again dc supply of rectifier is given to inverter where IGBT’s are used and converts the dc supply again into three phase ac supply. In the proposed scheme, Arduino Uno/Mega ADK microcontroller interfaced with Scilab(5.5.2) is used to produce PWM signals. The PWM signals generated is given to IC FAN7392(driver IC) which drives the thyristors. Three phase machines can be run on this by converting single phase to three phase AC supply wherever three phase AC supply is absent. Three phase induction motor can be used as load for testing of the hardware. For example, electric vehicles. The experimental result showed that PWM pulses produced remained approximately constant and the hardware have satisfactorily converted the single phase power to three phase power supply.