A STATCOM based voltage regulator for parallel operated isolated asynchronous generators feeding three-phase four-wire loads
by Gaurav Kumar Kasal, Bhim Singh
International Journal of Power Electronics (IJPELEC), Vol. 1, No. 3, 2009

Abstract: This paper presents an investigation on a voltage regulator for parallel operated isolated asynchronous generators (IAGs) supplying three-phase four-wire loads driven by constant speed prime mover like diesel engine, bio-mass, gasoline, etc. The proposed voltage regulator is realised using a static compensator (STATCOM) for providing the reactive power compensation, harmonic elimination and load balancing. Three single-phase insulated gate bipolar transistors (IGBTs) based VSCs along-with three single-phase transformers and self-supporting DC bus are used as a voltage controller for supplying three-phase four-wire loads. The neutral point of the load is achieved using the neutral point of the excitation capacitors and primary windings terminal of the transformers. The proposed isolated electrical generating system is modelled and simulated on MATLAB using Simulink and power system blockset (PSB) toolboxes. The performance of the proposed voltage controller for IAGs is demonstrated while feeding linear and non-linear balanced and unbalanced loads.

Online publication date: Tue, 03-Mar-2009

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