doi:10.1109/APEC.2017.7930795engAcero, J.Serrano, J.Carretero, C.Lope, I.Burdio, J.M.Analysis and design of tubular coils for wireless inductive power transfer systemsART-2017-99733We evaluate copper tubes as alternative of litz wire for planar coils of inductive power transfer (IPT) systems. For this purpose, a design methodology focused on maximizing the product of the magnetic coupling and the quality factor is proposed. The methodology is based on a combination of FEA simulations and analytical calculations of the skin and proximity losses in the tube. Analytical calculations are based on solutions of Maxwell''s equations for a tubular geometry. These solutions are oriented to extract both skin and proximity losses in the tube. Performance of a prototype of 1.5 kW is evaluated and compared with a conventional litz-wire implementation.2017http://zaguan.unizar.es/record/7082310.1109/APEC.2017.7930795http://zaguan.unizar.es/record/70823oai:zaguan.unizar.es:70823info:eu-repo/grantAgreement/ES/MINECO/CSD2009-00046info:eu-repo/grantAgreement/ES/MINECO/RTC-2014-1847-6info:eu-repo/grantAgreement/ES/MINECO/TEC2013-42937-Rinfo:eu-repo/grantAgreement/ES/UZ/JIUZ-2015-TEC-12Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC 16900830 (2017), 848 - 854All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess