Wireless power transmission with a sown auxiliary coil to improve power efficiency for an implantable device

Issue title: Selected papers from the International Symposium on Applied Electromagnetics and Mechanics - ISEM 2019

Guest editors: Jinhao Qiu, Ke Xiong and Hongli Ji

Article type: Research Article

Authors: Sasaki, Ryunosuke^a; | Koizumi, Kohei^a | Kiryu, Shogo^b

Affiliations: [a] The Division of Electrical Engineering and Chemistry, Tokyo City University, Setagaya-ku, Tokyo, Japan | [b] Tokyo City University, Setagaya-ku, Tokyo, Japan

Correspondence: [*] Corresponding author: Ryunosuke Sasaki, The Division of Electrical Engineering and Chemistry, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo 158-8577, Japan. E-mail: [email protected]

Abstract: In this study, a magnetic resonance wireless power transmission system with a sown auxiliary coil is described. The system is proposed to deliver power to an “implantable cardioverter defibrillator” (ICD) device from a bed. The auxiliary coil is supposed to be sown in a shirt. With the coil, the poor coupling coefficient and the effective quality factor can be improved. In this study, the power efficiency was investigated on a magnetic resonance wireless power transmission system with a sown auxiliary coil by using a 1/2 scaled model. As a result, when transfer distance was 100 mm (200 mm in the full scaled model) and lord resistance was 20 Ω, the maximum transfer efficiency with an auxiliary coil was measured to be about 70% much higher than without that.

Keywords: Wireless power transmission, sown coil, magnetic resonance

DOI: 10.3233/JAE-209397

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 64, no. 1-4, pp. 843-851, 2020