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http://dx.doi.org/10.6113/TKPE.2015.20.5.395

Bidirectional Tapped-inductor Boost-Flyback Converter  

Kim, Hyun-Woo (Dept. of Electrical Engineering, Soongsil University)
Jeon, Young-Tae (Dept. of Electrical Engineering, Soongsil University)
Park, Joung-Hu (Dept. of Electrical Engineering, Soongsil University)
Jeon, Hee-Jong (Dept. of Electrical Engineering, Soongsil University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.20, no.5, 2015 , pp. 395-401 More about this Journal
Abstract
This paper proposes a new bidirectional DC-DC converter with high efficiency. The proposed converter is composed of a flyback and a tapped-inductor boost converter to satisfy extreme operating conditions with low cost. The outputs are connected in series to achieve a high-voltage step-up. In the reverse direction, the proposed converter has an extreme step-down voltage. In this study, the proposed converter was employed with a 100 W hardware prototype. To design the controller, a small-signal transfer function of the proposed converter is derived. For PV power conditioning systems, a maximum power point tracking method is applied with perturb and observe method. To verify the operation of the bidirectional power flow, the current controller is applied. All of the controllers are employed with a digital signal processor.
Keywords
Bidirectional converter; High efficiency; PV lighting system; Tapped-inductor;
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