Abstract

In this paper, a front end integrated decentralized storage interface for photovoltaic (PV) battery systems is presented. Therefore, the battery charging power is directed to the battery from the front end, instead of the centralized battery system where the battery charging power processes twice. In the proposed approach, the battery charging circuit is integrated with the PV converter. Therefore, the proposed system can become more compact. The proposed converter is capable of tracking Maximum Power Point (MPP) and output voltage regulation while following the battery charging profile. In addition, all the switches are able to achieve soft-switching turn-on and turn-off for different load conditions. Simulation and experimental results for 100W are presented on the proposed integrated solar-battery system.

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