DC-to-DC converter with low input current ripple for maximum photovoltaic power extraction

A.H. El Khateb, Nasrudin Abd Rahim, Jeyraj Selvaraj, Barry Williams

Research output: Contribution to journalArticle

64 Citations (Scopus)
121 Downloads (Pure)

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 arrays, and maximum power point tracking applications. The PV array yields exponential curves for current and voltage where the maximum power occurs at the curve's mutual knee. Conventional dc-to-dc converters have a relatively high input ripple current which causes high power losses when connected to nonlinear sources like PV arrays. The proposed converter operates with low input current ripple which maximizes the power that can be sourced from the PV array, without the need of any electrolytic filtering capacitance. The effect of the ripple current on the PV array can be significant, and decreases the efficiency of the PV system. The proposed converter employs series input inductance with both input and output continuous energy flow. Converter simulations and experimental results support and extol the system concept.
Original languageEnglish
Pages (from-to)2246 - 2256
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Volume62
Issue number4
DOIs
Publication statusPublished - 2016

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Keywords

  • constant current converters
  • dc-to-dc converters
  • dc-to-dc-power conversion
  • photovoltaic cells
  • switched mode power supplies

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