A novel solid state voltage controller of three phase Self Excited Induction Generator for decentralized power generation

This paper presents a simple control structure for the stand alone operation of Self Excited Induction Generator used to operate under variable loads. The proposed system uses PWM Voltage Source Inverter, DC-DC Boost Converter and diode bridge Rectifier with SEIG. The required reactive power for the Self Excited Induction Generator is supplied by means of a capacitor bank and the PWM converter to build up the voltage of the SEIG. The DC-DC Boost Converter maintains constant dc link voltage at the input terminals of PWM Voltage Source Inverter. The consumer load is connected across VSI through LC filter. The proposed control strategy has good ac voltage regulation at all loads and no harmonic problems. The performance of proposed controller is simulated using MATLAB SIMULINK to demonstrate its capability as a voltage regulator and a harmonic eliminator. This scheme can be efficiently used for decentralized power generation in rural and remote areas.