An energy-efficient fast maximum power point tracking circuit in an 800-μ W photovoltaic energy harvester

Hoonki Kim, Sangjin Kim, Chan Keun Kwon, Young Jae Min, Chulwoo Kim, Soo Won Kim

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

An energy-efficient maximum power point tracking (MPPT) circuit with a fast-tracking time for use with 800-ìW PV energy harvesters is presented in this paper. The proposed MPPT circuit uses a successive approximation register MPPT algorithm, which has a power down mode and a fast tracking time, to achieve low power consumption and energy savings. The prototype MPPT circuit, which consists of analog-based circuits, has been implemented and fabricated in a 0.35-ìm BCDMOS process. The MPPT core occupies an area of 3 mm2 and consumes 4.6 ìW of power. The tracking time is reduced by 69.4%and the stored energy is increased by 31.4%as compared to the conventional hill climbing-based MPPT algorithm under indoor conditions.

Original languageEnglish
Pages (from-to)2927-2935
Number of pages9
JournalIEEE Transactions on Power Electronics
Volume28
Issue number6
DOIs
Publication statusPublished - 2013

Keywords

  • Energy harvesting
  • Maximum power point tracking (MPPT)
  • Photovoltaic (PV)
  • Solar cell
  • Wireless sensor networks (WSNs)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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