Optimization of Passive Voltage Multipliers for Fast Start-up and Multi-voltage Power Supplies in Electromagnetic Energy Harvesting Systems

Guang Yang, Bernard H Stark, Steve G Burrow, Simon J Hollis

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

This paper demonstrates the use of passive voltage multipliers for rapid start-up of sub-milliwatt electromagnetic energy harvesting systems. The work describes circuit optimization to make as short as possible the transition from completely depleted energy storage to the first powering-up of an actively controlled switched-mode converter. The dependency of the start-up time on component parameters and topologies is derived by simulation and experimentation. The resulting optimized multiplier design reduces the start-up time from several minutes to 1 second. An additional improvement uses the inherent cascade structure of the voltage multiplier to power sub-systems at different voltages. This multi-rail start-up is shown to reduce the circuit losses of the active converter by 72% with respect to the optimized single-rail system. The experimental results provide insight into the multiplier's transient behaviour, including circuit interactions, in a complete harvesting system, and offer important information to optimize voltage multipliers for rapid start-up.
Original languageEnglish
Title of host publication14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2014)
Subtitle of host publication18–21 November 2014, Awaji Island, Hyogo, Japan
PublisherIOP Publishing
Chapter012028
DOIs
Publication statusPublished - 27 Nov 2014
EventThe 14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2014) - Hyogo , Japan
Duration: 18 Nov 2014 → …

Publication series

NameJournal of Physics: Conference Series
PublisherIOP Publishing
Number1
Volume557
ISSN (Print)1742-6588

Conference

ConferenceThe 14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2014)
CountryJapan
CityHyogo
Period18/11/14 → …

Structured keywords

  • Digital Health

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