{"title":"Design and Research of Wireless Power Transfer System Based on Parity-Time-Symmetric","authors":"Yan Liu, Minghui Han, Hao Pan","doi":"10.1007/s42835-024-01977-7","DOIUrl":null,"url":null,"abstract":"<p>The traditional Wireless Power Transfer (WPT) system has the problem that the coupling coefficient has a great influence on the transmission characteristics. The WPT system with PT-symmetric structure can achieve the transmission characteristics independent of the coupling coefficient and maintain stable power and efficiency transmission in the strong coupling region constructed by the PT-WPT system. To further optimize PT-WPT, this paper proposes a PLL controlled wireless power transfer system based on PT-symmetric theory. Phase-locked loop (PLL) is employed to accurately control the power of the transmitter and the system can maintain constant transmission power and efficiency in the strong coupling region. In addition, this control method also reduces the complexity of WPT system. A 10–15 W experimental WPT system platform with a 0–10 cm transmission distance is developed to validate the transmission power and efficiency of the system, The results demonstrate that the output voltage and current of the inverter can always ensure that the system works in the PT-symmetric state and the transmission efficiency is more than 90%, The transmission power is not less than 10 W within the transmission range of 0–10 cm. The designed system can maintain constant high efficiency and high-power transmission in the strong coupling region.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electrical Engineering & Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s42835-024-01977-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The traditional Wireless Power Transfer (WPT) system has the problem that the coupling coefficient has a great influence on the transmission characteristics. The WPT system with PT-symmetric structure can achieve the transmission characteristics independent of the coupling coefficient and maintain stable power and efficiency transmission in the strong coupling region constructed by the PT-WPT system. To further optimize PT-WPT, this paper proposes a PLL controlled wireless power transfer system based on PT-symmetric theory. Phase-locked loop (PLL) is employed to accurately control the power of the transmitter and the system can maintain constant transmission power and efficiency in the strong coupling region. In addition, this control method also reduces the complexity of WPT system. A 10–15 W experimental WPT system platform with a 0–10 cm transmission distance is developed to validate the transmission power and efficiency of the system, The results demonstrate that the output voltage and current of the inverter can always ensure that the system works in the PT-symmetric state and the transmission efficiency is more than 90%, The transmission power is not less than 10 W within the transmission range of 0–10 cm. The designed system can maintain constant high efficiency and high-power transmission in the strong coupling region.
期刊介绍:
ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies.
The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.