VNU-UET Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T11:33:15ZEPrintshttp://eprints.uet.vnu.edu.vn/images/sitelogo.pnghttps://eprints.uet.vnu.edu.vn/eprints/2019-05-31T10:50:42Z2019-05-31T10:50:42Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/3464This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/34642019-05-31T10:50:42ZWireless Power Transfer Through Metal Using Inductive LinkThis paper presents a highly efficient power transfer system based on a co-design of a class-E power amplifier (PA) and a pair of inductively coupled Helical coils for through-metal-wall power transfer. Power is transferred wirelessly through a 3.1-mm thick aluminum barrier without any physical penetration and contact. Measurement results show that the class-E
PA achieves a peak power gain of 25.2 dB and a maximum collector efficiency of 57.3%, all at 200 Hz. The proposed system obtains a maximum power transfer efficiency of 9% and it can deliver 5 W power to the receiver side through the aluminum barrier.Tuan Anh Vutanhvu@vnu.edu.vnVan Chi Phamcvpham@ucdavis.eduAnh Vu Phampham@ece.ucdavis.eduChristopher Gardnergardner36@llnl.gov2018-04-10T06:34:31Z2018-04-10T06:34:31Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/2943This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/29432018-04-10T06:34:31ZWireless Energy Harvesting System Through Metal for Aerospace SensorWe present the development of a contactless energy harvesting system to transfer power through metal that
could be potentially used for aerospace applications. By co-designing a switching power amplifier, high performance inductive coils and rectifier with load, the inductive power transfer system is proposed. Practical issues such as coil winding to maximize power transfer efficiency, effective implementation of ferrite, and the optimal design of impedance transformation network are considered. Power measurement results demonstrate that the harvester system achieves a measured power efficiency of ~3.4 %. The measured maximum output power is more than 500 mW and linearly increases with input current. The proposed inductive coupling type of harvesting system overcomes major limitations of conventional vibration type of energy conversion such as lower power, short life cycle, unreliable problems in extremely harsh aeronautics environment.Van Chi Phamcvpham@ucdavis.eduTuan Anh Vutanhvu@vnu.edu.vnWilliam Tranwctran@ucdavis.eduAnh Vu Phampham@ece.ucdavis.eduChristopher Gardnergardner36@llnl.gov