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Transformer-Less Converter Concept for a Grid-Connection of Thin-Film Photovoltaic Modules

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2 Author(s)
Boeke, U. ; Philips Res. Labs., Philips Technol. GmbH, Aachen ; Van der Broeck, H.

A transformer-less converter concept for grid- connected photovoltaic systems is proposed that combines a DC/DC converter front-end with a DC/AC inverter. The converter system has an earth-connected DC input, as required from many thin-film photovoltaic modules. The DC/DC converter increases the positive photovoltaic DC-bus voltage by its negative DC output voltage to supply a grid-connected 3-phase inverter. This architecture extends today's power electronic converter topologies for thin-film photovoltaic modules considering their special requirements with the ambition to realize higher power conversion efficiencies at lower cost.

Published in:

Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE

Date of Conference:

5-9 Oct. 2008