三线圈磁耦合谐振式无线电能传输系统频率特性分析

李新恒, 龚立娇, 冯力, 孙翔宇, 李阳, 李辉

李新恒，龚立娇，冯力，等.三线圈磁耦合谐振式无线电能传输系统频率特性分析［J］.工矿自动化，2018,44（3）：91-96.. DOI: 10.13272/j.issn.1671-251x.2017090019
引用本文: 李新恒，龚立娇，冯力，等.三线圈磁耦合谐振式无线电能传输系统频率特性分析［J］.工矿自动化，2018,44（3）：91-96.. DOI: 10.13272/j.issn.1671-251x.2017090019
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LI Xinheng, GONG Lijiao, FENG Li, SUN Xiangyu, LI Yang, LI Hui. Analysis of frequency characteristics of three-coil magnetic coupling resonant wireless power transmission system[J]. Journal of Mine Automation, 2018, 44(3): 91-96. DOI: 10.13272/j.issn.1671-251x.2017090019
Citation: LI Xinheng, GONG Lijiao, FENG Li, SUN Xiangyu, LI Yang, LI Hui. Analysis of frequency characteristics of three-coil magnetic coupling resonant wireless power transmission system[J]. Journal of Mine Automation, 2018, 44(3): 91-96. DOI: 10.13272/j.issn.1671-251x.2017090019
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三线圈磁耦合谐振式无线电能传输系统频率特性分析

  • 1.

    石河子大学 机械电气工程学院， 新疆 石河子832003

  • 2.

    重庆大学 输配电装备及系统安全与新技术国家重点实验室， 重庆400044

  • 3.

    国网辽宁省电力有限公司 营口供电公司， 辽宁 营口115000

基金项目: 

国家自然科学基金资助项目（51675354）

详细信息

  • 中图分类号: TD60

Analysis of frequency characteristics of three-coil magnetic coupling resonant wireless power transmission system

  • 1.

    College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China

  • 2.

    State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China

  • 3.

    Yingkou Power Supply Company, State Grid Liaoning Electric Power Supply Co., Ltd., Yingkou 115000, China

摘要

    摘要
  • 摘要: 建立了三线圈磁耦合谐振式无线电能传输系统的等效电路模型，推导出系统传输功率和传输效率公式，得出了系统在临界耦合状态下获得最大传输功率时的耦合因数关系，给出了耦合因数与频率分裂点之间的关系表达式，分析了系统频率特性。理论分析结果表明：在过耦合状态下，系统发生频率分裂现象，会出现3个频率分裂点；在临界耦合状态和欠耦合状态下，系统只在固有谐振频率处发生谐振；无论有没有发生频率分裂现象，系统均在固有谐振频率处发生谐振，此时系统传输功率达到最大。仿真和实验结果验证了理论分析的正确性。
    Abstract: An equivalent circuit model of three-coil magnetic coupling resonant wireless power transmission system was built, and formulas of system transmission power and transmission efficiency were deduced. Coupling factors relation with the maximum system transmission power was obtained under critical coupling state, and relationship expression between coupling factor and frequency splitting point was given. Frequency characteristics of the system were analyzed. The theoretical analysis results show that there is frequency splitting phenomenon in the system under overcoupling state with three frequency splitting points; the system only resonates at inherent resonant frequency under critical coupling state and undercoupling state; whether there is frequency splitting phenomenon or not, the system resonates at inherent resonant frequency, and transmission power of the system reaches the maximum. The simulation and experimental results verify correctness of the theoretical analysis.
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  • 刊出日期:  2018-03-09

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