论文标题
在高功率密度下，用于工业应用和快速电池充电的超过5 kW的无线电源传输超过5 kW
Superconducting Wireless Power Transfer Beyond 5 kW at High Power Density for Industrial Applications and Fast Battery Charging
论文作者
论文摘要
最先进的无线功率传输（WPT）系统基于常规的铜线圈，在互环耦合的中距离策略中运行时，众所周知，效率远高于90％。除了完全的系统效率外，传输线圈的面积和重量相关的功率密度是高功率应用的关键数字。本文报告了功能齐全的WPT系统，该系统由发射器和接收器端的单个煎饼高温超导（HTS）线圈组成，超过了大多数常规系统的功率密度。尽管线圈尺寸紧凑，但在6 kW的输出功率下，DC到DC效率以97％的速度达到了97％。除了基本的线圈设计之后，显示了HTS线圈中AC损耗的分析和数值模拟，并考虑了滞后和涡流贡献。通过单线线圈的实验AC损耗测量值验证了结果，该测量通过标准锁定技术获得的频率为4 kHz。最后，提出了在不同频率和负载条件下的全系统性能的实验结果。
State of the Art Wireless Power Transfer (WPT) systems, based on conventional copper coils, are known to exhibit efficiencies well above 90% when operated in the resonantly coupled mid-range regime. Besides full system efficiency, the area- and weight-related power densities of the transmission coils are key figures of merit for high power applications. This paper reports on a fully functional WPT system, consisting of single pancake high-temperature superconducting (HTS) coils on the transmitter and the receiver side, which exceeds the power density of most conventional systems. Despite a compact coil size, a DC-to-DC efficiency above 97% is achieved at 6 kW output power. Next to the fundamental coil design, analytical and numerical simulations of the AC loss in the HTS coils are shown, taking into account both hysteresis and eddy current contributions. The results are validated by experimental AC loss measurements of single coils, obtained by a standard lock-in technique up to frequencies of 4 kHz. Finally, experimental results of the full system performance at different frequencies and load conditions are presented.
