High power density energy harvester with high permeability magnetic material embedded in a rotating wheel

Qi Wang; Yi Zhang; Nian X. Sun; J. Gregory McDaniel; Ming L. Wang

doi:10.1117/12.916980

4 April 2012 High power density energy harvester with high permeability magnetic material embedded in a rotating wheel

Qi Wang, Yi Zhang, Nian X. Sun, J. Gregory McDaniel, Ming L. Wang

Proceedings Volume 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012; 83470V (2012) https://doi.org/10.1117/12.916980
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

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.

Citation Download Citation

Qi Wang, Yi Zhang, Nian X. Sun, J. Gregory McDaniel, and Ming L. Wang "High power density energy harvester with high permeability magnetic material embedded in a rotating wheel", Proc. SPIE 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012, 83470V (4 April 2012); https://doi.org/10.1117/12.916980

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