An Improved Current Balancing Technique of Two-Winding IG Suitable for Wind-PV-Based Grid-Isolated Hybrid Generation System

A microgeneration scheme based on a wind–solar hybrid renewable energy system (HRES), suitable for grid-secluded applications, is described in this article. A conventional single-phase two-winding induction generator (IG) capable of operating in a wide speed range is used for wind energy conversion. A photovoltaic (PV) panel of suitable capacity is connected to the common dc bus as a part of the hybrid generation. A sequential current-based control for the IG is proposed in this article for balancing the currents of the two stator windings. A fixed-frequency inverter is used at the common dc bus for supplying single-phase ac domestic loads. The suitability of the proposed generation scheme is verified using proper simulations followed by appropriate experiments on a laboratory test setup.

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