Study on Electric-field Distribution Characteristics of Parity-time Symmetric Electric-field Coupled Wireless Power Transfer System
郑小瑶 1江彦伟 1疏许健 1周阳 1赵小光1
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作者信息
1. 福州大学电气工程与自动化学院,福州350108
折叠
摘要
电场耦合无线电能传输ECPT(electric-field coupled wireless power transfer)系统具有耦合极板轻便、跨金属传能、涡流损耗可忽略等优点.其中,宇称-时间对称电场耦合无线电能传输PT-ECPT(parity-time symmetric ECPT)系统具有在耦合极板间距发生变化时保持恒定输出的特性,具有广泛的应用前景.基于此,研究了PT-ECPT系统的电场辐射分布.理论分析、仿真及实验结果表明,在强耦合区域且输出功率相同的情况下,PT-ECPT系统的电场分布在耦合系数较小时比传统的谐振式ECPT系统更为集中,使得PT-ECPT在小耦合系数时安全性更高.
Abstract
The electric-field coupled wireless power transfer(ECPT) system possesses several advantages,including lightweight coupling pole plates,cross-metal power transmission and negligible eddy current losses. Specifically,the par-ity-time symmetric ECPT(PT-ECPT) system characterized by its capability to maintain a constant output under variations in the coupling pole plate spacing exhibits promising application prospects. Consequently,the electric-field radiation distribution of the PT-ECPT system was studied. The theoretical analysis,simulations and experimental results indicate that compared with those of the conventional resonant ECPT systems,the electric-field distribution of the PT-ECPT sys-tem is more concentrated in the regions of strong coupling while maintaining identical output power. This concentration is particularly pronounced when the coupling coefficient is small,which makes the PT-ECPT system more secure under conditions of reduced coupling coefficients.
关键词
电场耦合/电场泄露/无线电能传输系统/宇称-时间对称/电场分布
Key words
Electric-field coupled/electric-field leakage/wireless power transfer system/parity-time symmetry/electric-field distribution
维普
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