PV string per-module maximum power point enabling converters

Walker, Geoffrey R., Xue, John, & Sernia, Paul (2003) PV string per-module maximum power point enabling converters. In Duke, R. (Ed.) Australasian Universities Power Engineering Conference, AUPEC'03, University of Canterbury, Christchurch, New Zealand.

Abstract

Many grid connected PV installations consist of a single series string of PV modules and a single DC-AC inverter. This efficiency of this topology can be enhanced with additional low power, low cost per panel converter modules. Most current flows directly in the series string which ensures high efficiency. However parallel Cúk or buck-boost DC-DC converters connected across each adjacent pair of modules now support any desired current difference between series connected PV modules. Each converter “shuffles” the desired difference in PV module currents between two modules and so on up the string. Spice simulations show that even with poor efficiency, these modules can make a significant improvement to the overall power which can be recovered from partially shaded PV strings.

Impact and interest:

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ID Code: 63566
Item Type: Conference Paper
Refereed: Yes
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2003 [please consult the authors]
Deposited On: 11 Dec 2014 23:11
Last Modified: 11 Dec 2014 23:11

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