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A current fed two-inductor boost converter for grid interactive photovoltaic applications

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Open access
Authors
Li, Q.
Wolfs, Peter
Date
2004
Type
Conference Paper

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Citation
Li, Q. and Wolfs, Peter. 2004. A current fed two-inductor boost converter for grid interactive photovoltaic applications, in Tapan Saha (ed), Australasian Universities Power Engineering Conference AUPEC 2004, Sep 26 2004, pp. Paper 20. Brisbane, Queensland: University of Queensland.
Source Title
Australasian Universities Power Engineering Conference
Source Conference
Australasian Universities Power Engineering Conference AUPEC 2004
ISBN
Faculty
Department of Electrical and Computer Engineering
School of Engineering
Faculty of Science and Engineering
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Abstract

A current fed two-inductor boost converter is combined with a low frequency unfolder stage to produce a Module Integrated Converter (MIC) for photovoltaic applications. A two-phase buck converter with an interphase transformer is modulated to produce a rectified sinusoid waveform as an input to the fixed duty cycle two-inductor boost cell. The boost cell features an integrated magnetics approach to combine the two inductors and the transformer cores, non-dissipative snubbers to recover switching losses and silicon carbide output rectifiers. The MIC interfaces with the mains via an unfolder stage which uses optically driven mosfets as switching elements. Experimental results for a converter with an average power of 50 W are provided.