A current fed two-inductor boost converter for grid interactive photovoltaic applications
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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.
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Isolated zero-voltage switching two-inductor boost converter with two coupled input inductors and one magnetic coreWolfs, Peter; Li, Q. (2009)The isolated two-inductor boost converter with an auxiliary transformer has been previously proposed for applications where the low voltage inputs need to be transformed to high voltage outputs. In order to utilise the ...
A general approach to control a Positive Buck-Boost converter to achieve robustness against input voltage fluctuations and load changesBoora, A.; zare, F.; Ledwich, G.; Ghosh, Arindam (2008)A positive buck-boost converter is a known DC- DC converter which may be controlled to act as buck or boost converter with same polarity of the input voltage. This converter has four switching states which include all the ...
A Current Fed Two-Inductor Boost Converter with Lossless Snubbing for Photovoltaic Module Integrated Converter ApplicationsLi, Q.; Wolfs, Peter (2005)In this paper, a photovoltaic Module Integrated Converter (MIC) is implemented with a current fed two-inductor boost converter cascaded with a line frequency unfolder. The two-inductor boost cell is fed from a sinusoidally ...