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Dual-stage converter to improve transfer efficiency and maximum power point tracking feasibility in photovoltaic energy-conversion systems

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3 Author(s)
Dhople, S.V. ; Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA ; Davoudi, A. ; Chapman, P.L.

This work addresses transfer efficiency and tracking ineffectiveness in switch-mode, dc-dc converters for photovoltaic energy-conversion systems. Tracking ineffectiveness constrains maximum power point tracking algorithms due to dc-dc converter operational constraints. Transfer efficiency quantifies the effect of switching-frequency ripple on the usable power extracted from the photovoltaic source. A dual-stage boost buck-boost converter is proposed as a solution to alleviate tracking ineffectiveness and enhance transfer efficiency. Simulations and experimental results indicate that both concerns are addressed by the proposed topology.

Published in:
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE

Date of Conference: 21-25 Feb. 2010

Page(s):
2138 - 2142
ISSN :
1048-2334
E-ISBN :
978-1-4244-4783-1
Print ISBN:
978-1-4244-4782-4
INSPEC Accession Number:
11204681
Conference Location :
Palm Springs, CA
Digital Object Identifier :
10.1109/APEC.2010.5433532
Product Type:
Conference Publications

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