A DC-DC boost converter with variation-tolerant MPPT technique and efficient ZCS circuit for thermoelectric energy harvesting applications

Jungmoon Kim, Chulwoo Kim

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

This paper presents a dc-dc boost converter with the maximum power point tracking (MPPT) technique for thermoelectric energy harvesting applications. The technique realizes variation tolerance by adjusting the switching frequency of the converter. A finely controlled zero-current switching (ZCS) scheme together with the accurate MPPT technique enhances the overall efficiency of the converter because of an optimal turn-on time generated by a one-shot pulse generator that is proposed. Moreover, the ZCS technique can deal with low- and high-temperature differences applied to the thermoelectric generator. This allows a wider range of conversion ratios compared to those of conventional converters used for thermal energy harvesting. Experimentally, the converter implemented in a 0.35-μm BCDMOS process had a peak efficiency of 72% at the input voltage of 500 mV while supplying a 5.62-V output.

Original languageEnglish
Article number6375846
Pages (from-to)3827-3833
Number of pages7
JournalIEEE Transactions on Power Electronics
Volume28
Issue number8
DOIs
Publication statusPublished - 2013 Jan 30

Keywords

  • Battery charger
  • boost converter
  • dc-dc converter
  • energy harvesting
  • maximum power point tracking (MPPT)
  • one-shot pulse generator
  • temperature variation
  • thermal energy harvesting
  • thermoelectric energy harvesting
  • thermoelectric generator (TEG)
  • variation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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