Electromagnetic Energy Harvester with Inertial Rotary Structure for Human Motion Application at Ultra-Low Frequency

Luo，Anxin1,2,3,4; Zhang，Yulong1; Xu，Weihan1; Lu，Yan3,4; Wang，Fei1

10.1109/MEMS46641.2020.9056319

2020

1084-6999

978-1-7281-3582-3

Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)

2020-January

536-539

18-22 Jan. 2020

Vancouver, BC, Canada

345 E 47TH ST, NEW YORK, NY 10017 USA

IEEE

This paper reports a small-scale electromagnetic energy harvester with inertial rotary structure, which can convert linear motion to high-speed rotation and keeps rotating inertially. With a single compression, the rotation speed of rotor is estimated as high as 3500 rpm and it can rotate inertially as long as 50 s. The energy conversion efficiency (from rotor's kinetic energy to electric energy) during this process is 92.4%. Therefore, the device can efficiently harvest energy from ultra-low frequency (<1Hz) vibration. During the test, RMS output power of about 11 mW and 6.5 mW can be achieved under external vibration frequency of 0.84 Hz and 0.1 Hz, respectively. Finally, the energy harvester is mounted under shoes to harvest energy from human motion. Average power of 85 mW can be harvested from running at a speed of 9 km/h.

Human Motion Rotational Energy Harvester Ultra-low-frequency

第一 ; 通讯

英语

CPCI-S ; EI

Shenzhen Science and Technology Innovation Committee[JCYJ20170412154426330][KQTD2015071710313656]

Engineering ; Science & Technology - Other Topics

Engineering, Electrical & Electronic ; Engineering, Mechanical ; Nanoscience & Nanotechnology

WOS:000569381600140

20201608459242

Electromagnetic waves ; Kinetic energy ; Energy conversion efficiency ; Kinetics ; MEMS

Energy Conservation:525.2 ; Energy Conversion Issues:525.5 ; Fluid Flow, General:631.1 ; Electric Equipment:704.2 ; Electromagnetic Waves:711 ; Classical Physics; Quantum Theory; Relativity:931

2-s2.0-85083162094

Scopus

1.School of Microelectronics,Southern University of Science and Technology (SUSTech),Shenzhen,China
2.Department of Electrical and Electronic Engineering,SUSTech,Shenzhen,China
3.State Key Laboratory of AMS-VLSI,Institute of Microelectronics,University of Macau (UM),Macao
4.Department of Electrical and Computer Engineering,FST,UM,Macao

Luo，Anxin,Zhang，Yulong,Xu，Weihan,et al. Electromagnetic Energy Harvester with Inertial Rotary Structure for Human Motion Application at Ultra-Low Frequency[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2020:536-539.