SummaryOmnidirectional Wireless Power Transfer (OWPT) system can provide power to multiple loads in space. The different loads have different requirements for current and power levels under various operating conditions. This paper proposes a Variable Receiving Coil (VRC) structure and its control strategy. Active regulation of the output current is achieved by adjusting the geometric size of the receiving coil. Meets the power supply needs of equipment in different scenarios. This design allows the effective value of the VRC current to remain stable within the range of 1.01–1.62A (transmission distance of 22–27 cm). By adjusting the geometric transformation state of the VRC, different output currents can be obtained under fixed positions, loads, and input voltages. The designed receiver can meet the differential current requirements of multiple spatial loads, and is insensitive to factors such as load, transmission distance, and rotation angle. This system can reduce the design complexity of charging and power supply systems and effectively promote the application of Wireless Power Transfer (WPT) in the field of Internet of Things devices.

中文翻译：

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全向WPT系统可变磁耦合结构多接收机自适应设计

摘要全向无线功率传输（OWPT）系统可以为空间中的多个负载提供电力。不同的负载在不同的工作条件下对电流和功率水平有不同的要求。本文提出了一种可变接收线圈（VRC）结构及其控制策略。通过调整接收线圈的几何尺寸来实现输出电流的主动调节。满足不同场景下设备的供电需求。这样的设计使得VRC电流有效值稳定在1.01~1.62A范围内（传输距离22~27cm）。通过调整VRC的几何变换状态，可以在固定位置、负载和输入电压下获得不同的输出电流。设计的接收器可以满足多种空间负载的差动电流要求，并且对负载、传输距离、旋转角度等因素不敏感。该系统可以降低充电和供电系统的设计复杂度，有效促进无线输电（WPT）在物联网设备领域的应用。