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邻近耦合无线电能传输系统的高效屏蔽设计与优化
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作者单位:

1. 省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学), 天津市 300130; 2. 河北省电磁场与电器可靠性重点实验室(河北工业大学电气工程学院), 天津市 300130; 3. 天津理工大学, 天津市 300384

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基金项目:

国家重点研发计划资助项目(2017YFB0903904);国家自然科学基金资助项目(51777055)


Efficient Shielding Design and Optimization of Wireless Power Transfer System with Proximity Coupling
Author:
Affiliation:

1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Tianjin 300130, China;2. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province (School of Electrical Engineering, Hebei University of Technology), Tianjin 300130, China;3. Tianjin University of Technology, Tianjin 300384, China

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    摘要:

    在无线电能传输技术的实际应用中,当多个距离相近的无线电能传输系统同时工作时,系统间漏磁场引起的耦合会对周围的电磁环境产生影响,干扰系统谐振参数,进而降低系统工作效率。针对此问题,文中设计了一种谐振屏蔽线圈以消除系统间邻近耦合,分析了其工作原理及其对改善邻近耦合和传输效率的影响。通过仿真及实验,研究了线圈形状及匝数对屏蔽效果的影响,并对屏蔽线圈进行了结构优化。结果表明,方形密绕线圈屏蔽效果较好,可有效降低系统间邻近耦合造成的参数扰动,有助于系统调谐以提高邻近耦合下的系统传输效率。

    Abstract:

    In the practical application of wireless power transmission(WPT), multiple WPT systems which are close in distance, can work simultaneously as a normal application scenario. However, proximity coupling caused by mutual coupling of leakage magnetic field from adjacent systems brings disturbances to resonant parameters. These parameter fluctuations will reduce the system transmission efficiency. In order to solve this problem, a resonant shielding coil is designed to eliminate proximity coupling between systems. Its working principle and effect on improving the proximity coupling and transmission efficiency are analyzed. Both simulation and experiment are conducted to compare how the shape and number of turns of shielding coil affect the effectiveness of shielding. Then the shielding coil structure is optimized. The results show that the square-shape shielding coil has a good performance in reducing the parameter disturbances caused by proximity coupling, which helps system tune for improving the transmission efficiency of WPT system with proximity coupling.

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引用本文

李睿泽,杨庆新,李永建,等.邻近耦合无线电能传输系统的高效屏蔽设计与优化[J].电力系统自动化,2019,43(21):163-169. DOI:10.7500/AEPS20190113003.
LI Ruize, YANG Qingxin, LI Yongjian,et al.Efficient Shielding Design and Optimization of Wireless Power Transfer System with Proximity Coupling[J].Automation of Electric Power Systems,2019,43(21):163-169. DOI:10.7500/AEPS20190113003.

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  • 收稿日期:2019-01-13
  • 最后修改日期:2019-08-23
  • 录用日期:2019-05-13
  • 在线发布日期: 2019-08-23
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