EXPERIMENTAL INVESTIGATION OF SIMPLE CONSTRUCTION SINGLE TO THREE PHASE CONVERTER

Abstract

This paper shows the behaviour of three phase transformer to work as a single phase to three phase converter. The converter is to supply the three phase load by a three phase sinusoidal wave form voltage. The converter consists of an ordinary three phase transformer and a capacitor. One coil is connected to the single phase main supply. Another coil on another limb is connected to the capacitor. Three coils, with one coil at each limb, are to supply the load by the three phase voltages. The hybrid connections of the converter coils and capacitor are to give the 120 degrees shift between the phases, sinusoidal wave form output voltage and symmetrical values of output voltages. The value of the capacitor is chosen to give the 120 degrees shift and the sinusoidal wave form. The number of turns for each of the three output coils are also chosen to give the symmetrical values of output voltages. The simple construction and good operating characteristics of this converter, enables it to work in light or heavy currents utilization.