Simplified Measuring Method of kQ Product for Wireless Power Transfer via Magnetic Resonance Coupling Based on Input Impedance Measurement

被引：0

作者：

Hata, Katsuhiro ^{[1
]}

Imura, Takehiro ^{[1
]}

Hori, Yoichi ^{[1
]}

机构：

[1] Univ Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778561, Japan

来源：

IECON 2017 - 43RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY | 2017年

关键词：

Wireless power transfer; Magnetic resonance; kQ product; Input impedance; Shorted load; Opened load; SYSTEM;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Wireless power transfer (WPT) via magnetic resonance coupling has gathered attentions because of its high transmitting efficiency and robustness to misalignment. The efficiency characteristics of the WPT system are expressed by kQ product, which is given by coupling coefficient and quality factors of a transmitter and receiver. However, a conventional measuring method of the kQ product is quite burdensome because it requires to remove the resonance capacitors of the transmitter and receiver and to change connecting points of measuring equipment. In this paper, a simplified measuring method of the kQ product is proposed based on the input impedance of the WPT system. The experiments demonstrate that the proposed method is simple yet effective and the measurement results not only evaluates the maximum transmitting efficiency but also estimates an optimum load condition for designing an efficiency control system.

引用

页码：6974 / 6979

页数：6

共 15 条

[1] Through-Hole Contactless Slipring System Based on Rotating Magnetic Field for Rotary Applications [J].