|Table of Contents|

Analysis on transmission characteristics of wireless power transmission system based on magnetic resonant coupling

《南京理工大学学报》（自然科学版）[ISSN:1005-9830/CN:32-1397/N]

Issue:
2014年01期
Page:
118-122
Research Field:
Publishing date:

Info

Title:
Analysis on transmission characteristics of wireless power transmission system based on magnetic resonant coupling
Author(s):
Li Weixin; Zhang He
ZNDY of Ministerial Key Laboratory,NUST,Nanjing 210094,China
Keywords:
magnetic resonant coupling;  wireless power transmission;  resonance frequency;  frequency splitting
PACS:
TM724; TN919
DOI:
-
Abstract:
In order to improve energy transmission efficiency of wireless power system based on magnetic resonant coupling,the relationship between transmission efficiency and coupling distance is researched studying the transmission characteristics of wireless power system.The equivalent circuit model of wireless power transmission system via magnetic resonance coupling is analyzed contactless based on the two-port network analysis method.The condition of the resonant frequency splitting phenomenon is produced,a contactless power transmission system is deduced,and the frequency expression of maximum efficiency is derived.The transmission characteristics of this system are researched using numerical simulation.The law that two quite different resonant frequencies turn into one until the critical condition is revealed and resonant frequency is increased gradually with the coupling distance under the condition of optimum efficiency.Experimental results show that the transmission characteristics are consistent with theoretical analysis and simulation.The model can describe the transmission characteristics of the power transmission system accurately,and provide theoretical support for the magnetic resonant coupling system.

References:

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Last Update: 2014-02-28