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11磁耦合无电能传输中谐振式与感应式两种传输方式的对比分析——张艺明 赵争鸣 贺凡波 陈凯楠
MACROBUTTON MTEditEquationSection2 SEQ MTEqn \r \h \* MERGEFORMAT SEQ MTSec \r 1 \h \* MERGEFORMAT SEQ MTChap \r 1 \h \* MERGEFORMAT 磁耦合无线电能传输中谐振式与感应式两种传输方式的对比分析
张艺明 赵争鸣 贺凡波 陈凯楠 鲁 挺 袁立强
(电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系),北京市 100084)
摘要 磁耦合无线电能传输在近些年来成为了研究热点问题。感应式和谐振式是磁耦合谐振式无线电能传输中的两种技术,均以交变的磁链铰链发射端和接收端作为特性。本文对这两种技术进行对比分析,阐述其技术表现上的异同,说明了发射端和接收端分别进行电容谐振的原因。利用电路理论研究了磁耦合无线电能传输的两种基本结构——两线圈结构和四线圈结构,推导了其系统效率和传输效率的表达式,得到理论上最大的传输效率,并利用美国麻省理工学院的实验数据进行了验证。鉴于感应式和谐振式具有相同的理论基础和均以交变的磁链作为能量变换媒介,认为感应式和谐振式是电磁感应定律的两种不同技术表现形式。
关键词:无线电能传输 非接触电能传输 磁耦合 谐振 感应 对比分析
中图分类号:TM315
A Comparative Study between Resonant and Inductive Magnetically-Coupled Wireless Power Transfer
Zhang Yiming Lu Ting Zhao Zhengming Chen Kainan He Fanbo Yuan Liqiang
(State Key Lab of Control and Simulation of Power Systems and Generation Equipment (Department of Electrical Engineering, Tsinghua University) Beijing 100084 China)
Abstract Wireless power transfer (WPT) has become a research interest in recent decades. Inductive WPT (IWPT) and resonant WPT (RWPT), as two basic technologies in magnetically-coupled WPT (MCWPT) which features in alternating flux linkage coupling the transmitter and the receiver, are analyzed and compared in this paper. The capacitive compensations both in the sending and receiving sides are investigated. Based on two basic structures of MCWPT, namely the two-coil structure and the four-coil structure, the formulas of the system efficiency and the transfer efficiency are deduced, as well as the theoretical maximum transfer efficiency. They are verified by the experimental results obtained by Massachusetts Institute of Technology. It is concluded that IWPT and RWPT are simply two different technological forms of electromagnetic induction.
keywords:Wireless power transfer (WPT) contactless power transfer magnetically coupled resonant inductive comparison
1 引言
电力系统国家重点实验室自主项目(SKLD13M09)。收稿日期 2014-07-15 改稿日期 2014-
电力
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