Effect of core and magnetoplated wire on energy harvesting using leakage flux recovery coil

Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)

Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto

Article type: Research Article

Authors: Yamamoto, Tatsuya^* | Bu, Yinggang | Mizuno, Tsutomu

Affiliations: Electrical and Electronic Engineering, Shinshu University, Nagano, Japan

Correspondence: [*] Corresponding author: Tatsuya Yamamoto, Electrical and Electronic Engineering, Shinshu University, Wakasato 4-17-1, 380-8553, Nagano, Japan. Tel.: +81 26 269 5204; Fax: +81 26 269 5215; E-mail: [email protected]

Abstract: Magnetic flux in the environment can be converted to electric power using a coil. However, to date, the power recovered has been miniscule because of increases in the AC resistance of the coil. This paper reports an investigation of the role of the core in the impedance of the coil, and the output power of the energy harvesting circuit of the leakage magnetic flux recovery coil. The use of a magnetoplated wire with a ferrite core in an energy harvesting circuit resulted in an increase in power of 29.3% to give 6.53 mW at 150 kHz in a uniform magnetic flux density of 27 mT.

Keywords: Energy harvesting, magnetoplated wire, ferrite core

DOI: 10.3233/JAE-162117

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 3-4, pp. 1341-1349, 2016