Analysis and design of DD coupler for dynamic wireless charging of electric vehicles

Hemant Kumar Dashora, Giuseppe Buja, Manuele Bertoluzzo, Rosanna Pinto, Vanni Lopresto

Research output: Contribution to journalArticle

4 Citations (Scopus)


In dynamic wireless charging (DWC) of battery-powered electric vehicles (BEVs), inductive power transfer takes place between two coils, one buried into the road and the other one installed onboard BEVs. This paper deals with the design of the coils of a lumped DWC system. At first, the concept of polarized coil is explicated and a DWC-suitable structure of polarized coil, namely the double-D (DD) coil, is illustrated. Then, the paper analyzes the inductive properties of a DD coupler and presents its design for a case study. The design embraces the dimensions of the coils and the magnetic cores, thickness included, and usage of bars instead of plates for the cores in order to save magnetic material. After developing closed-form expressions of the inductive parameters of the coils useful for their preliminary sizing, the analysis and design activities are carried out with the assistance of finite element method codes. Relevant results supporting the design are presented by help of tables, maps, and graphs.
Original languageEnglish
Pages (from-to)170 - 189
Number of pages20
JournalJournal of Electromagnetic Waves and Applications
Issue number2
Publication statusPublished - 22 Jan 2018
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

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