A high gain DC-DC converter for energy harvesting of thermal waste by thermoelectric generators

Yara Huleihel, Alon Cervera, Shmuel Ben-Yaakov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

A tapped-inductor boost converter for an input voltage range of 0.3-0.6 V with the output connected to a fixed voltage of 24V for battery charging, was designed, analyzed and tested experimentally. The converter is intended to be used as a harvester for low voltage renewable energy sources such as thermoelectric generators and bio-reactors. The proposed converter is capable of achieving a high boost ratio (40-80) with a reasonable duty-cycle (0.3-0.7). The converter was optimized by selecting low parasitic resistance components and by applying a PCB-based flat magnetic core to reduce the leakage inductance. The operation of the proposed converter was analyzed for continuous and discontinuous inductor current modes and power loss and efficiency expressions were derived. Good agreement was found between circuit simulations, theoretical analysis and experimental results. The experimental unit reached an efficiency of about 86% (gate drive losses included) at an input voltage of 0.5V and output power level of about 1.2W.

Original languageEnglish
Title of host publication2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
DOIs
StatePublished - 1 Dec 2012
Event2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012 - Eilat, Israel
Duration: 14 Nov 201217 Nov 2012

Publication series

Name2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012

Conference

Conference2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
Country/TerritoryIsrael
CityEilat
Period14/11/1217/11/12

Keywords

  • Energy harvesting
  • TEG
  • boost converter
  • high-gain DC-DC converter
  • leakage inductance
  • snubber
  • tapped-inductor
  • thermoelectric generator

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