Hybrid winding concept for toroids

Henrik Schneider, Thomas Andersen, Arnold Knott, Michael A. E. Andersen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This paper proposes a hybrid winding concept for toroids using the traces in a printed circuit board to make connection to bended copper foil cutouts. In a final product a number of strips with a certain thickness would be held by a former and the whole assembly could be placed by pick and placement machinery. This opens up the possibility for both an automated manufacturing process and an automated production process of toroidal magnetics such as power inductors, filtering inductors, air core inductors, transformers etc. Both the proposed hybrid and the common wire wound winding implementation is simulated using finite element modeling and the DC and AC resistance of the inductors are verified with experimental measurements on prototypes. It is found that commercial available layer thickness of printed circuit boards is a bottleneck for high power applications. Furthermore, the winding configuration is crucial for performance.
Original languageEnglish
Title of host publicationProceedings of 2013 IEEE ECCE Asia Downunder
Publication date2013
ISBN (Print)978-1-4799-0482-2
Publication statusPublished - 2013
EventECCE Asia DownUnder 2013 : 5th Annual International Energy Conversion Congress and Exhibition - Crown Convention Centre, Melbourne, Australia
Duration: 3 Jun 20136 Jun 2013


ConferenceECCE Asia DownUnder 2013
LocationCrown Convention Centre


  • Inductor
  • Toroid
  • Toroidal
  • FEM
  • Winding resistance


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