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학술저널
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전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.10 No.1
발행연도
2010.1
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9 - 13 (5page)

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This paper proposes an input-series-output-parallel connected ZVS full bridge converter with interleaved control for photovoltaic power conditioning systems (PV PCS). The input-series connection enables a fully modular power-system architecture, where low voltage and standard power modules can be connected in any combination at the input and/or at the output, to realize any given specifications. Further, the input-series connection enables the use of low-voltage MOSFETs that are optimized for a very low RDSON, thus, resulting in lower conduction losses. The system costs decrease due to the reduced current, and the volumes of the output filters due to the interleaving technique. A topology for a photovoltaic (PV) dc/dc converter that can dramatically reduce the power rating and increase the efficiency of a PV system by analyzing the PV module characteristics is proposed. The control scheme, consisting of an output voltage loop, a current loop and input voltage balancing loops, is proposed to achieve input voltage sharing and output current sharing. The total PV system is implemented for a 10-㎾ PV power conditioning system (PCS). This system has a dc/dc converter with a 3.6-㎾ power rating. It is only one-third of the total PV PCS power. A 3.6-㎾ prototype PV dc/dc converter is introduced to experimentally verify the proposed topology. In addition, experimental results show that the proposed topology exhibits good performance.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. A NOVEL TOPOLOGY FOR PV CONVERTERS
Ⅲ. PROPOSED DC/DC TOPOLOGY FOR PV PCS
Ⅳ. MEASUREMENT RESULTS
Ⅴ. CONCLUSIONS
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UCI(KEPA) : I410-ECN-0101-2010-560-002083618