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

fYear

2008

fDate

5-9 Oct. 2008

Firstpage

1

Lastpage

8

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;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Edmonton, Alta.

ISSN

0197-2618

Print_ISBN

978-1-4244-2278-4

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/08IAS.2008.274

Filename

4659062