Adaptive impedance matching method based on magnetic resonance wireless energy transmission
In order to solve the problem of low efficiency and transmission distance of multi-to-1(multi transmit(TX) coils to one receive(RX) coil)coupled magnetic resonance(CMR) wireless power transmission system, this paper presents 2-to-1(two TX Coils to one RX coil) of the CMR wireless energy transmission...
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National Computer System Engineering Research Institute of China
2018-07-01
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doaj-d79b2adda95c433eb8356f1586a07e3d2020-11-24T21:34:38ZzhoNational Computer System Engineering Research Institute of ChinaDianzi Jishu Yingyong0258-79982018-07-0144711211610.16157/j.issn.0258-7998.1743273000086752Adaptive impedance matching method based on magnetic resonance wireless energy transmissionXiong Wei0Liu Xiaojing1Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy, Hubei University of Technology,Wuhan 430068,ChinaSchool of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,ChinaIn order to solve the problem of low efficiency and transmission distance of multi-to-1(multi transmit(TX) coils to one receive(RX) coil)coupled magnetic resonance(CMR) wireless power transmission system, this paper presents 2-to-1(two TX Coils to one RX coil) of the CMR wireless energy transmission system of the adaptive impedance matching method. The principle of this method is that when the load impedance is matched to the equivalent internal impedance of the power source, power can be transmitted to the load without reflection, but it is usually not matched. Therefore, the LC impedance matching network(IMN) is used to make the source resistance and the load side impedance equal. As the RX coil changes in the spatial position of the transmitter will cause the input impedance changes, this paper sets different LC impedance matching network for different RX coil position, so that it can achieve the purpose of adaptive impedance matching. Finally, after the test, with the RX coil in the spatial position of the change, the impedance matching network can quickly achieve automatic matching, energy transfer efficiency is up to 87%, and the mobile phone charging distance increases to 10 cm or more.http://www.chinaaet.com/article/3000086752coupled magnetic resonanceadaptive impedance matching2-to-1 CMR system |
collection |
DOAJ |
language |
zho |
format |
Article |
sources |
DOAJ |
author |
Xiong Wei Liu Xiaojing |
spellingShingle |
Xiong Wei Liu Xiaojing Adaptive impedance matching method based on magnetic resonance wireless energy transmission Dianzi Jishu Yingyong coupled magnetic resonance adaptive impedance matching 2-to-1 CMR system |
author_facet |
Xiong Wei Liu Xiaojing |
author_sort |
Xiong Wei |
title |
Adaptive impedance matching method based on magnetic resonance wireless energy transmission |
title_short |
Adaptive impedance matching method based on magnetic resonance wireless energy transmission |
title_full |
Adaptive impedance matching method based on magnetic resonance wireless energy transmission |
title_fullStr |
Adaptive impedance matching method based on magnetic resonance wireless energy transmission |
title_full_unstemmed |
Adaptive impedance matching method based on magnetic resonance wireless energy transmission |
title_sort |
adaptive impedance matching method based on magnetic resonance wireless energy transmission |
publisher |
National Computer System Engineering Research Institute of China |
series |
Dianzi Jishu Yingyong |
issn |
0258-7998 |
publishDate |
2018-07-01 |
description |
In order to solve the problem of low efficiency and transmission distance of multi-to-1(multi transmit(TX) coils to one receive(RX) coil)coupled magnetic resonance(CMR) wireless power transmission system, this paper presents 2-to-1(two TX Coils to one RX coil) of the CMR wireless energy transmission system of the adaptive impedance matching method. The principle of this method is that when the load impedance is matched to the equivalent internal impedance of the power source, power can be transmitted to the load without reflection, but it is usually not matched. Therefore, the LC impedance matching network(IMN) is used to make the source resistance and the load side impedance equal. As the RX coil changes in the spatial position of the transmitter will cause the input impedance changes, this paper sets different LC impedance matching network for different RX coil position, so that it can achieve the purpose of adaptive impedance matching. Finally, after the test, with the RX coil in the spatial position of the change, the impedance matching network can quickly achieve automatic matching, energy transfer efficiency is up to 87%, and the mobile phone charging distance increases to 10 cm or more. |
topic |
coupled magnetic resonance adaptive impedance matching 2-to-1 CMR system |
url |
http://www.chinaaet.com/article/3000086752 |
work_keys_str_mv |
AT xiongwei adaptiveimpedancematchingmethodbasedonmagneticresonancewirelessenergytransmission AT liuxiaojing adaptiveimpedancematchingmethodbasedonmagneticresonancewirelessenergytransmission |
_version_ |
1725948455599210496 |