2018•Unpublished venueRequires access

Development of magnetic resonant wireless power transfer system robust to position gap

Tsuchida Yoshiki, Soichiro Ito, Masahiro Fukui

Abstract

Recently, as a convenient charging method for small IoT sensors, a magnetic resonant wireless power transfer (WPT) system is attractive. In WPT systems, robustness of the efficiency due to the position gap of the receiver and transmitter is very important. In this paper, we propose a method that reduces the efficiency decrease even if a position is displaced by using a Helmholtz coil structure. Comparison with general single coil WPT system is discussed in the evaluation about the efficiency.

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Available abstract

Key concepts: Wireless power transfer, Robustness (evolution), Electromagnetic coil, Transmitter, Wireless, Electrical engineering, Position (finance), Air gap (plumbing)