Vibration-based energy harvesting circuit using feed-forward control

Qinlin Cai, Songye Zhu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper proposes an improved electromagnetic damper cum energy harvester (EMDEH), consisting of an electromagnetic damper and a specially designed energy harvesting circuit (EHC). EMDEH is intended to suppress structural vibrations by harvesting vibration energy of structures. A microcontroller unit (MCU) is applied in the EHC to control the power switch by adjusting the duty cycle appropriately through a feed-forward control. Consequently, the EHC can achieve a controllable equivalent damping coefficient. The performance of the proposed EHC was validated through a cyclic test on a universal testing machine. Although the total energy conversion is relatively low, a desirable constant resistance feature could be achieved and an electrical power with hundreds of mWs could be charged into a battery. These experimental results revealed the benefit of using MCU in a feed-forward control system in EMDEH, and the improved EMDEH could fulfill dual-functions, namely, simultaneous vibration control and energy harvesting, with an improved performance.

Original languageEnglish
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019
EditorsJerome P. Lynch, Haiying Huang, Hoon Sohn, Kon-Well Wang
PublisherSPIE
ISBN (Electronic)9781510625952
DOIs
Publication statusPublished - 1 Jan 2019
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019 - Denver, United States
Duration: 4 Mar 20197 Mar 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10970
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019
CountryUnited States
CityDenver
Period4/03/197/03/19

Keywords

  • buck-boost converter
  • electromagnetic damper
  • feed-forward control
  • microcontroller
  • vibration-based energy harvesting

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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