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

Author

Dhople, Sairaj V. ; Davoudi, Ali ; Chapman, Patrick L.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA

fYear

2010

fDate

21-25 Feb. 2010

Firstpage

2138

Lastpage

2142

Abstract

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.

Keywords

DC-DC power convertors; maximum power point trackers; photovoltaic power systems; switching convertors; dual-stage boost buck-boost converter; dual-stage converter; maximum power point tracking; photovoltaic energy-conversion systems; switch-mode DC-DC converters; switching-frequency ripple; DC-DC power converters; Energy conversion; Impedance; Machinery; Photovoltaic systems; Solar power generation; Switching converters; Topology; Virtual manufacturing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Palm Springs, CA

ISSN

1048-2334

Print_ISBN

978-1-4244-4782-4

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2010.5433532

Filename

5433532