125326 20251113150204.0 doi 10.1109/tte.2023.3239215 sideral 132885 ART-2023-132885 eng Narvaez, Alexis Universidad de Zaragoza (orcid)0000-0003-1100-6339 Printed circuit board coils of multi-track litz structure for 3.3 kW inductive power transfer system 2023 Access copy available to the general public Unrestricted This paper presents the optimization procedure of an inductive power transmission (IPT) system which utilizes large size spiral printed circuit board (PCB) coils for high- power transfer. Printed circuit boards for coil assembly provides advantages in the manufacturing process through the use of cost- effective flexible fabrication techniques. Furthermore, this kind of construction offers a low profile device, which is of great interest for applications with space constraints. PCB-based IPT system coils can achieve high energy efficiency by applying litz-structure braiding techniques, as investigated in this work, where the objective was to obtain an optimized balance between the conduc- tion losses and proximity losses associated with the number and dimensions of the traces. Considering the geometrical dimensions and manufacturing constraints, we will proceed to obtain the characteristics of the coil to achieve optimal performance. The estimation of coil losses were in part based on finite element simulations, and the results were conveniently processed with the appropriate mathematical methods. Numerical simulation and experimental results were conducted for validation on a prototype suitable to transfer up to 3.3 kW for a transmitter- receiver distance of 10 cm. In the experimental arrangement, a maximum efficiency in the coils of 93% has been measured, and the overall efficiency of 88% has been reached for the entire IPT system. info:eu-repo/grantAgreement/EUR/AEI/CPP2021-008938 info:eu-repo/grantAgreement/EUR/AEI/TED2021-129274B-I00 info:eu-repo/grantAgreement/ES/ISCIII/PI21-00440 info:eu-repo/grantAgreement/ES/MICINN-AEI-FEDER/PID2019-103939RB-I00 info:eu-repo/grantAgreement/ES/MICINN-AEI/PDC2021-120898-I00 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 7.2 2023 TRANSPORTATION SCIENCE & TECHNOLOGY 10 / 72 = 0.139 2023 Q1 T1 ENGINEERING, ELECTRICAL & ELECTRONIC 32 / 353 = 0.091 2023 Q1 T1 2.772 2023 Automotive Engineering 2023 Q1 Transportation 2023 Q1 Energy Engineering and Power Technology 2023 Q1 Electrical and Electronic Engineering 2023 Q1 12.2 2023 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Carretero, Claudio Universidad de Zaragoza (orcid)0000-0001-7901-9174 Lope, Ignacio Universidad de Zaragoza (orcid)0000-0003-4858-9734 Acero, Jesús Universidad de Zaragoza (orcid)0000-0001-7207-5536 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 5008 785 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Tecnología Electrónica 2002 247 Universidad de Zaragoza Dpto. Física Aplicada Área Electromagnetismo 9, 3 (2023), 3947-3957 IEEE trans. transp. electr. IEEE transactions on transportation electrification 2577-4212 11154871 http://zaguan.unizar.es/record/125326/files/texto_completo.pdf Postprint 3221204 http://zaguan.unizar.es/record/125326/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:125326 articulos driver 2025-11-13-15:00:45 ARTICLE