DOUBLE STATOR WINDING INDUCTION GENERATOR FOR RENEWABLE ENERGY CONVERSION SYSTEMS

Abstract

The paper presents a double stator winding induction generator (DSWIG) used in renewable energy systems. The generator has a squirrel-cage rotor and a two separate stator windings. The main winding is connected to a DC bus through an inverter. The auxiliary winding is connected to a capacitor bank, in order to ensure a part of the necessary reactive power, in parallel with an unpretentious (resistive) load. At low speed the inverter produces the required reactive power necessary for magnetization. At high speed, the reactive power of the capacitor bank is considerable, reducing the apparent power of the inverter. A designing method for the capacitor bank is presented, considering the self excitation phenomenon