期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 28, 期 6, 页码 2957-2967出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2012.2220861
关键词
DC-DC power converters; energy harvesting; photovoltaic cells; power integrated circuits; solar energy
资金
- National Science Foundation [0925147]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0925147] Funding Source: National Science Foundation
This paper explores the benefits of distributed power electronics in solar photovoltaic applications through the use of submodule integrated maximum power point trackers (MPPT). We propose a system architecture that provides a substantial increase in captured energy during partial shading conditions, while at the same time enabling significant overall cost reductions. This is achieved through direct integration of miniature MPPT power converters into existing junction boxes. We describe the design and implementation of a high-efficiency (>98%) synchronous buck MPPT converter, along with digital control techniques that ensure both local and global maximum power extraction. Through detailed experimental measurements under real-world conditions, we verify the increase in energy capture and quantify the benefits of the architecture.
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