Title :
Transformer-Less Converter Concept for a Grid-Connection of Thin-Film Photovoltaic Modules
Author :
Boeke, Ulrich ; Van der Broeck, Heinz
Author_Institution :
Philips Res. Labs., Philips Technol. GmbH, Aachen
Abstract :
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.
Keywords :
DC-AC power convertors; DC-DC power convertors; photovoltaic power systems; DC/AC inverter; DC/DC converter front-end; grid-connection; thin-film photovoltaic modules; transformer-less converter; Analog-digital conversion; Circuit topology; DC-DC power converters; Inverters; Photovoltaic systems; Power conversion; Power electronics; Solar power generation; Transistors; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE
Conference_Location :
Edmonton, Alta.
Print_ISBN :
978-1-4244-2278-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/08IAS.2008.274
