Abstract

This paper deals with the implementation of a controller for an isolated wind energy conversion system (WECS) using an isolated asynchronous generator (IAG) feeding three-phase four-wire loads. The reference source currents are computed using the power balance theory to control the voltage and frequency of WECS. Three-leg voltage source converter (VSC) with a battery energy storage system (BESS) is used as a voltage and frequency controller (VFC) for the isolated WECS. The star-delta transformer is used at point of common coupling to facilitate the three-phase four-wire load systems. Test results are presented to demonstrate the capabilities of VFC as a load leveler, load balancer, harmonic eliminator and neutral current compensator.

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