{"title":"Electro-thermal analysis of inductively coupled power transfer in pavement for electric vehicle charging","authors":"Xiao Chen , Hao Wang , Zilong Zheng , Fei Lu","doi":"10.1016/j.apenergy.2024.124809","DOIUrl":null,"url":null,"abstract":"<div><div>Inductively coupled power transfer (ICPT) system provides a promising alternative for wireless charging of electric vehicles (EVs). This study aims to develop an integrated electro-thermal analysis approach for analyzing power transmission and heat transfer of ICPT embedded in the pavement. Laboratory experiments were first conducted to evaluate wireless power transfer efficiency of ICPT system with the interference of pavement material. An integrated electro-thermal model was established to analyze transmission efficiency and temperature variation when ICPT system is embedded at various pavement depths of pavement structure subject to different vehicle offsets. The results revealed that traditional cement concrete pavement material with a typical water to cement ratio of 0.48 has negligible impact on power transfer efficiency under standard charging levels. However, the efficiency dropped from 95.4 % to 85.9 % as embedment depth increased from 4 cm to 16 cm, and it further decreased to 84.6 % with a 15 cm one-side offset at a 4 cm installation depth. The power loss results in significant changes of temperature. The maximum temperature variations were found to be impacted by incremental state of charge, charging power, and transmission efficiency, in addition to thermal properties of ICPT components. Under the most unfavorable case, those temperature changes of the ICPT system and pavement can be up to 112 °C and 76 °C, respectively.</div></div>","PeriodicalId":246,"journal":{"name":"Applied Energy","volume":"378 ","pages":"Article 124809"},"PeriodicalIF":10.1000,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306261924021925","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Inductively coupled power transfer (ICPT) system provides a promising alternative for wireless charging of electric vehicles (EVs). This study aims to develop an integrated electro-thermal analysis approach for analyzing power transmission and heat transfer of ICPT embedded in the pavement. Laboratory experiments were first conducted to evaluate wireless power transfer efficiency of ICPT system with the interference of pavement material. An integrated electro-thermal model was established to analyze transmission efficiency and temperature variation when ICPT system is embedded at various pavement depths of pavement structure subject to different vehicle offsets. The results revealed that traditional cement concrete pavement material with a typical water to cement ratio of 0.48 has negligible impact on power transfer efficiency under standard charging levels. However, the efficiency dropped from 95.4 % to 85.9 % as embedment depth increased from 4 cm to 16 cm, and it further decreased to 84.6 % with a 15 cm one-side offset at a 4 cm installation depth. The power loss results in significant changes of temperature. The maximum temperature variations were found to be impacted by incremental state of charge, charging power, and transmission efficiency, in addition to thermal properties of ICPT components. Under the most unfavorable case, those temperature changes of the ICPT system and pavement can be up to 112 °C and 76 °C, respectively.
期刊介绍：
Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.
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