Regulated voltage operation of a stand-alone 3-Ø self-excited induction generator

Abstract

This paper describes the performance of a wind driven 3-Ø self-excited induction generator (SEIG) terminal voltage regulation with thyristor switched reactor (TSR) and voltage source inverter (VSI) for a stand-alone mode. Generated voltage magnitude and frequency of SEIG is varies as soon as load and wind velocity changed. A reduced VA rating of a 3-Ø VSI suggested and implemented to control the system frequency. Since, SEIG is a resonance generator, may lost the resonant condition as soon as frequency and reactance of the system varies. Therefore, in order to retain the resonant condition; TSR technique is used to compensates the changing reactances against full-load capacitance connected across the stator terminals of the generator. A prototype controller designed and implemented in laboratory model of SEIG and tested. The results are presented.