基于二维磁耦合线圈的WPT多自由度磁场发射机构设计
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关键词：无线电能传输；二维磁耦合；旋转磁场；多自由度；发射线圈DOI：10.15938/j. emc.2025.09.015中图分类号：TM724 文献标志码：A 文章编号：1007-449X（2025）09-0159-10
Abstract：To address the issues of weak multi-degree-of-freedom（DOF） transmission capability，large volume occupation，and high requirement for receiver coil atitude in the transmitting mechanism of magnetically coupled wireless power transfer（WPT） systems，a WPT multi-DOF magnetic field transmitting mechanism based on a 2D magnetically coupled coil was proposed.Firstly，a 2D magnetically coupled transmiting coil structure was designed，a multi-physics field coupling model was established，the magnetic field distribution of the transmiting coil was simulated，and the 3D multi-DOF rotating magnetic field generation capability of the coil structure was verified. Secondly，the generation mechanism of the 3D multi-DOF rotating magnetic field was studied，and an optimization method for the structural parameters of the transmitting coil was proposed. An LCC-S type compensation network transmitting mechanism circuit was designed based on the 3D decoupled rotating magnetic field，which ensures the primary side excitation current is in a constant current state independent of load and coupling coefficient，and the secondary side voltage is in a constant voltage state independent of load. Finally，based on the multi-physics field coupling model，the power transmission effect of the transmiting mechanism was verified through simulation. Experimental results show that the energy transmission of the transmiting mechanism remains stable when the receiver coil atitude changes with multi-degree-of-freedom，and the transmission effciency is maintained above 61.91% with a maximum of 82.32% ，which verifies correctness of the new transmitting mechanism design and the feasibility of the method.
Keywords： wireless power transfer； two-dimensional magnetic coupling； rotating magnetic field; multi-ple-degree-of-freedom； transmitting coil
0引言
无线电能传输（wirelesspowertransfer，WPT）系统通过系统内耦合机构实现电能从电源到用电侧的无接触传输，依靠磁场、电场、激光或微波等形式作为传输介质，消除了导线的限制，与传统的电能传输形式相比，具有更加安全、便捷和可靠的优势[-2]]近年来，随着电力电子半导体技术、高频逆变技术、控制技术的发展，WPT技术得到快速发展与广泛关注。（剩余12142字）
