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http://dx.doi.org/10.6113/TKPE.2012.17.6.471

Development of PV Module Integrated Type Low Voltage Battery Charger using Cascaded Buck-Boost Converter  

Kim, Dong-Hee (College of Information and Communication Eng., Sungkyunkwan Univ.)
Lee, Hee-Seo (College of Information and Communication Eng., Sungkyunkwan Univ.)
Lee, Young-Dal (College of Information and Communication Eng., Sungkyunkwan Univ.)
Lee, Eun-Ju (College of Information and Communication Eng., Sungkyunkwan Univ.)
Lee, Tae-Won (PIA TF, Samsung Electro-Mechanics Co., Ltd.)
Lee, Byoung-Kuk (College of Information and Communication Eng., Sungkyunkwan Univ.)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.17, no.6, 2012 , pp. 471-477 More about this Journal
Abstract
In this paper, in order to use module integrated converter using cascaded buck-boost converter for a low battery charger in stand-alone system, a charging algorithm which considers photovoltaic and battery status and PWM controllers which are changed according to charging modes are proposed. The proposed algorithm consists of constant current mode, constant voltage mode and maximum power point tracking mode which enables the battery to charge with maximum power rate. This paper also presents design of cascaded buck-boost converter that is the photovoltaic charger system. A 150W prototype system is built according to verify proposed the charger system and the algorithm.
Keywords
photovoltaic (PV); battery charger; stand-alone; cascaded buck-boost converter; 4-switch buck-boost converter; maximum power tracking (MPPT);
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