Conducted electromagnetic interference simulation model with non-linear behaviour of transformer

Yitao Liu; Kye Yak See

Conducted electromagnetic interference simulation model with non-linear behaviour of transformer

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Author(s): Yitao Liu ¹ and Kye Yak See ¹
- Affiliations: 1: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
Source: Volume 8, Issue 4, April 2015, p. 602 – 609
DOI: 10.1049/iet-pel.2013.0827 , Print ISSN 1755-4535, Online ISSN 1755-4543

Received 26/06/2013, Accepted 28/09/2014, Revised 09/08/2014, Published 19/01/2015

Using a flyback converter as a case study, an electromagnetic interference (EMI) simulation model including the non-linear behaviour of an isolation transformer is developed. To take into account the non-linearity of the transformer in the circuit simulation, the Jiles-Atherton (J-A) model that handles the non-linear behaviour of the magnetic core is proposed. As the non-linearity of the transformer affects mainly the differential-mode (DM) conducted EMI but not the common-mode conducted EMI, the simulation and experimental results presented in the study will focus on DM conducted EMI. The ability to include the non-linear behaviour of a magnetic component in a power converter yields more realistic prediction that reflects the actual operating condition of the power converter, which prevents underestimation of DM conducted EMI.

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Conducted electromagnetic interference simulation model with non-linear behaviour of transformer

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