Design and experiment of wireless power transfer systems via electromagnetic field near-zone region

作者：Wang, Wensong; Chen, Yinchao; Yang, Shuhui; Chan, Allan; Wang, Yi; Cao, Qunsheng^*

来源：International Journal of Electronics, 2016, 103(10): 1736-1747.

DOI：10.1080/00207217.2016.1138527

• Wireless power transfer
• oscillation circuit
• magnetic inductive coupling
• mutual-inductance
• Z-parameter matrix

This paper presents the fundamental principle, circuit implementation and measurement of wireless power transfer (WPT) technology through both Colpitts and Hartley oscillation prototype circuits. The Colpitts and Hartley oscillation prototypes are used to convert DC voltages into AC ones. Meanwhile, both half- and full-wave rectification circuits are designed correspondingly for AC/DC voltage conversion. In addition, the orientation and distance effects between the transmitting and receiving coils are investigated. The self-inductance, mutual-inductance and coupling coefficient for the coupled inductors are extracted as a function of distance and frequency by using an equivalent T-circuit network and a derived Z-parameter matrix. The proposed WPT systems operate at around 3.6MHz and the transferred voltage is measured at the WPT receiving terminal. The measured results indicate that the two proposed WPT systems can operate properly for potential short-distance applications.

• 出版日期2016-10
• 单位南京航空航天大学