{"title":"共振和距离不敏感无线电源。奇偶时间对称Duffing谐振腔的传输","authors":"Jiali Zhou, Bo Zhang, Gongjun Liu, D. Qiu","doi":"10.1109/WPT.2018.8639115","DOIUrl":null,"url":null,"abstract":"In this paper, a concept of parity-time (PT) symmetry from quantum physics, which enables constantefficiency energy transfer between linear LC resonators within a definite range of transfer distance, is extended to WPT systems with Duffing resonators. By considering nonlinear resonance properties and introducing complex variables, the coupled-mode models of WPT systems with Duffing resonators are derived. Thereafter, transfer performance in the steady state is investigated in an explicit way according to coupled-mode theory (CMT) as well as the parameter conditions of an exact PT symmetric phase. In comparison with PT symmetry-based WPT systems with linear LC resonators, WPT systems with PT symmetric Duffing resonators exhibit combined features of distance and resonance detuning insensitivity. Finally, a system is designed to maintain constant transfer efficiency of 84% with a resonance detuning tolerance of nearly 5%, which is confirmed by simulation results.","PeriodicalId":180534,"journal":{"name":"2018 IEEE Wireless Power Transfer Conference (WPTC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Resonance and Distance Insensitive Wireless Power. Transfer with Parity-Time Symmetric Duffing Resonators\",\"authors\":\"Jiali Zhou, Bo Zhang, Gongjun Liu, D. Qiu\",\"doi\":\"10.1109/WPT.2018.8639115\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, a concept of parity-time (PT) symmetry from quantum physics, which enables constantefficiency energy transfer between linear LC resonators within a definite range of transfer distance, is extended to WPT systems with Duffing resonators. By considering nonlinear resonance properties and introducing complex variables, the coupled-mode models of WPT systems with Duffing resonators are derived. Thereafter, transfer performance in the steady state is investigated in an explicit way according to coupled-mode theory (CMT) as well as the parameter conditions of an exact PT symmetric phase. In comparison with PT symmetry-based WPT systems with linear LC resonators, WPT systems with PT symmetric Duffing resonators exhibit combined features of distance and resonance detuning insensitivity. Finally, a system is designed to maintain constant transfer efficiency of 84% with a resonance detuning tolerance of nearly 5%, which is confirmed by simulation results.\",\"PeriodicalId\":180534,\"journal\":{\"name\":\"2018 IEEE Wireless Power Transfer Conference (WPTC)\",\"volume\":\"72 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2018 IEEE Wireless Power Transfer Conference (WPTC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/WPT.2018.8639115\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE Wireless Power Transfer Conference (WPTC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WPT.2018.8639115","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Resonance and Distance Insensitive Wireless Power. Transfer with Parity-Time Symmetric Duffing Resonators
In this paper, a concept of parity-time (PT) symmetry from quantum physics, which enables constantefficiency energy transfer between linear LC resonators within a definite range of transfer distance, is extended to WPT systems with Duffing resonators. By considering nonlinear resonance properties and introducing complex variables, the coupled-mode models of WPT systems with Duffing resonators are derived. Thereafter, transfer performance in the steady state is investigated in an explicit way according to coupled-mode theory (CMT) as well as the parameter conditions of an exact PT symmetric phase. In comparison with PT symmetry-based WPT systems with linear LC resonators, WPT systems with PT symmetric Duffing resonators exhibit combined features of distance and resonance detuning insensitivity. Finally, a system is designed to maintain constant transfer efficiency of 84% with a resonance detuning tolerance of nearly 5%, which is confirmed by simulation results.