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A new MPPT method for low-power solar energy harvesting

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Article revista IEEE (764,6Kb)
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10.1109/TIE.2009.2037653
 
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hdl:2117/10122

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López Lapeña, OscarMés informacióMés informacióMés informació
Penella López, María Teresa
Gasulla Forner, ManuelMés informacióMés informacióMés informació
Document typeArticle
Defense date2010-09
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
This paper describes a new maximum-power-pointtracking (MPPT) method focused on low-power (< 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. A prototype was implemented with a 500-mW PV panel, a commercial boost converter, and low-power components for the MPPT controller. Laboratory measurements were performed to assess the effectiveness of the proposed method. Tracking efficiency was higher than 99.6%. The overall efficiency was higher than 92% for a PV panel power higher than 100 mW. This is, in part, feasible due to the low power consumption of the MPPT controller, which was kept lower than 350 μW. The time response of the tracking circuit was tested to be around 1 s. Field measurements showed energy gains higher than 10.3% with respect to a direct-coupled solution for an ambient temperature of 26 ◦C. Higher gains are expected for lower temperatures.
CitationLopez-Lapeña, O.; Penella, M.; Gasulla, M. A new MPPT method for low-power solar energy harvesting. "IEEE transactions on industrial electronics", Setembre 2010, vol. 57, núm. 9, p. 3129-3138. 
URIhttp://hdl.handle.net/2117/10122
DOI10.1109/TIE.2009.2037653
ISSN0278-0046
Publisher versionhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5345741&tag=1
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