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Proceedings Paper

High power density energy harvester with high permeability magnetic material embedded in a rotating wheel
Author(s): Qi Wang; Yi Zhang; Nian X. Sun; J. Gregory McDaniel; Ming L. Wang
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Paper Abstract

This work presents an alternative design of a rotating energy harvester, which possesses the capability of powering electronic sensors and wireless sensor networks within vehicle. This energy harvester design is based on magnetostatic coupling between a stationary circular-arc hard magnet array and rotating magnetic solenoids, which consists of a unique core with high permeability (μr>10,000) to significantly increase the output power density. A prototype of this rotating energy harvesting system has been fabricated and demonstrated on a rotating wheel at speeds from 10 to 60 miles/hour (mph). Test of the prototype equipped with energy storage circuit and wireless transmission board on actual vehicle has been carried out. Results of different rotating frequencies show average power densities from 1 to 5 W/cm3. A numerical and experimental study of powering a real-time wireless tire pressure monitoring system (TPMS) reveals that the energy harvester design generates constant and steady power sufficient for continuous operation of the TPMS.

Paper Details

Date Published: 5 April 2012
PDF: 6 pages
Proc. SPIE 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012, 83470V (5 April 2012); doi: 10.1117/12.916980
Show Author Affiliations
Qi Wang, Northeastern Univ. (United States)
Yi Zhang, Northeastern Univ. (United States)
Nian X. Sun, Northeastern Univ. (United States)
J. Gregory McDaniel, Boston Univ. (United States)
Ming L. Wang, Northeastern Univ. (United States)


Published in SPIE Proceedings Vol. 8347:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012
Andrew L. Gyekenyesi, Editor(s)

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