Leakage Inductance Calculation for Planar Transformers with a Magnetic Shunt

Zhang Jun, Ziwei Ouyang, M. C. Duffy, Michael A. E. Andersen, W. G. Hurley

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


The magnetic shunt is generally inserted in a planar transformer to increase the leakage inductance which can be utilized as the series inductor in resonant circuits such as the LLC resonant converter. This paper presents a calculation methodology for the leakage inductance of the transformer with a magnetic shunt by means of the stored magnetic energy in the primary and secondary sides of the transformer using the magnetomotive force (MMF) variation method, as well as the stored energy in the shunt based on the reluctance model. The detailed calculation method is described. Both the FEA simulation and the experimental results have proven the validity of the proposed calculation method for leakage inductance.
Original languageEnglish
Title of host publicationProceedings of ECCE USA
Number of pages6
Publication date2013
ISBN (Print)978-1-4799-0336-8
Publication statusPublished - 2013
EventIEEE ECCE USA 2013 - Denver, Colorado, United States
Duration: 15 Sep 201319 Sep 2013


ConferenceIEEE ECCE USA 2013
CountryUnited States
CityDenver, Colorado
Internet address

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