Abstract:

Power converters used in the existing smart home electric vehicle (EV) battery charging systems are capable of feeding only dc power. Whereas, this paper proposes the usage of hybrid converters in such systems as they are used for supplying power to both ac and dc loads simultaneously. Among various hybrid converter topologies, boost derived hybrid converter (BDHC) and quadratic boost derived hybrid converter (QBDHC) are analyzed in this paper. A photovoltaic (PV) array fed smart home system using BDHC and QBDHC is proposed to provide both dc power and ac power simultaneously and their performances were compared in this paper. The interfacing of multiple outputs is accomplished using time division multiplexing of power generated from PV array. In the proposed system, the hybrid converter is designed by replacing single switch of conventional boost converter by voltage source inverter (VSI). It has higher reliability in terms of power density and has inherent shoot-through protection during inverter operation. It is best suited for home applications which require support for both ac and dc loads. The system is designed, modeled and simulated using PSIM software and a laboratory prototype is developed and tested. Resemblance between the simulated and experimental results validates the efficaciousness of the proposed system.

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