文章摘要
冯天旭,王智慧,孙跃,等.采用三维偶极线圈的无线电能传输系统多自由度拾取机构[J].电力系统自动化,2018,42(23):99-104. DOI: 10.7500/AEPS20180507005.
FENG Tianxu,WANG Zhihui,SUN Yue, et al.Multi-degree-of-freedom Pick-up Mechanism of Wireless Power Transfer System Using Three-dimensional Dipole Coils[J].Automation of Electric Power Systems,2018,42(23):99-104. DOI: 10.7500/AEPS20180507005.
采用三维偶极线圈的无线电能传输系统多自由度拾取机构
Multi-degree-of-freedom Pick-up Mechanism of Wireless Power Transfer System Using Three-dimensional Dipole Coils
DOI:10.7500/AEPS20180507005
关键词: 线电能传输  偶极线圈  多自由度  线圈组合方式  有限元分析
KeyWords: wireless power transfer(WPT)  dipole coil  multi-degree-of-freedom  coil combination mode  finite element analysis
上网日期:2018-10-16
基金项目:国家自然科学基金资助项目(61573074);已申请国家发明专利(2018101682010)
作者单位E-mail
冯天旭 重庆大学自动化学院, 重庆市 400044  
王智慧 重庆大学自动化学院, 重庆市 400044 wangzhihui@cqu.edu.com 
孙跃 重庆大学自动化学院, 重庆市 400044  
唐春森 重庆大学自动化学院, 重庆市 400044  
摘要:
      线电能传输系统拾取机构相对于发射机构的方向性比较敏感,拾取机构的角度变化将会极大影响系统的能效特性。为实现线电能的多自由度拾取,文中提出一种采用三维偶极线圈的线电能系统多自由度拾取机构,对拾取机构多自由运动时的磁路进行了分析,引出拾取线圈输出组合方式的讨论;选取整流后串联模式搭建了三维偶极拾取线圈的等效电路模型,以拾取最大功率及输出平稳性为优化目标,对偶极线圈的匝数进行了优化。用COMSOL进行有限元分析,得出三维正交偶极线圈比三维正交环形线圈具有更高的功率密度的结论。实验结果表明:拾取机构任意旋转下,输出电压较为稳定且输出功率维持在10 W以上。
Abstract:
      The pick-up mechanism of the wireless power transfer(WPT)system is more sensitive to the directionality than the trigger mechanism. The change of the angle of the pick-up mechanism will greatly affect the energy-efficiency characteristics of the system. In order to achieve multi-degree-of-freedom pick-up of wireless power, this paper proposes a multi-degree-of-freedom pick-up mechanism of wireless power transfer system using three-dimensional dipole coils. Firstly, the magnetic circuit of the pick-up mechanism in multi-degree-of-freedom motion is analyzed, and the combination of the pick-up coil output is discussed. The equivalent circuit model of the three-dimensional dipole pick-up coil is developed when the mode that three pick-up coils are in series after rectification is selected. To obtain the maximum power and maintain output stable, the number of turns of dipole coil is optimized. Finally, the finite element analysis based on COMSOL verifies that the three-dimensional orthogonal dipole coil has a higher power density than the three-dimensional orthogonal toroidal coil. The experiment shows that the output voltage is stable and the output power maintains above 10 W under any rotation of the pick-up mechanism.
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