DC-to-DC Converter with Low Input Current Ripple for Maximum Photovoltaic Power Extraction

Ahmad Elkhateb, Nasrudin Abd Rahim, Jeyraj Selvaraj, Barry W Williams

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

This paper presents a dc-to-dc converter, which offers continuous input and output energy flow and low input current ripple, applicable and mandatory for photovoltaic (PV) arrays and maximum power tracking applications. The PV array yields exponential curves for current and voltage where maximum power occurs at the curve's mutual knee. Conventional dc-to-dc converters have a relatively high input current ripple which causes high power losses when connected to nonlinear sources like PV arrays. The proposed converter maximizes the power that can be sourced from the PV array, without the need of any electrolytic filtering capacitance. The effect of current ripple can be significant and decreases PV system efficiency. Converter simulations and experimental results support and extol the system concept.
Original languageEnglish
Pages (from-to)2246-2256
JournalIEEE Transactions on Industrial Electronics
Volume62
Issue number4
Early online date18 Dec 2014
DOIs
Publication statusPublished - Apr 2015

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