A non-intrusive magnetic energy scavanger for renewable power generation state monitoring

Wei Jiang, Jingying Lu, Fulong Li, Seiji Hashimoto, Zhengyu Lin

Research output: Chapter in Book/Report/Conference proceedingConference publication

Abstract

To increase the reliability of renewable energy production, the local environment variables have to be monitored closely, such as the chamber/nacelle temperature and humidity. In such harsh working conditions, acquiring auxiliary power for such sensor load can harm system reliability if the power is drawn directly from the supply or load lines. This paper proposes a non-intrusive power supply system for the sensor load by harvesting the near field magnetic power from the current enriched supply cables. The size and turn number of the magnetic field harvester coil is calculated and verified by the finite element model. A two stage power conditioning circuit is designed, consisting of a 4X voltage multiplier followed by an energy feed-forward enabled buck converter. The prototype of the energy scavenger is implemented and tested on a current ripple enriched cable; the experimental results indicate that the scavenger can harvest more than 30mW from the power cable with 10kHz 7A RMS ripple component.

Original languageEnglish
Title of host publicationThe 5th IEEE International Conference on Renewable Energy Research and Applications (ICRERA 2016)
PublisherIEEE
Pages562-566
Number of pages5
ISBN (Electronic)978-1-5090-3388-1
DOIs
Publication statusPublished - 23 Mar 2017
Event5th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2016 - Birmingham, United Kingdom
Duration: 20 Nov 201623 Nov 2016

Conference

Conference5th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2016
CountryUnited Kingdom
CityBirmingham
Period20/11/1623/11/16

Bibliographical note

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Keywords

  • energy scavenger
  • magnetic induction
  • non-intrusive power supply
  • power conditioning

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