Calculation of conducted EMI generated by single-ended primary inductance converter

Kahina Mostefaoui-Kasri (1) , Yacine Azzouz (1) , Mohamed Benbouzid (2) , Anne Louis (1) , Bélahcène Mazari (1) , Philippe Eudeline (3)

1 IRSEEM - Institut de Recherche en Systèmes Electroniques Embarqués
2 LBMS - Laboratoire brestois de mécanique et des systèmes
3 Thales Air Systems

This paper deals with the problem of conducted electromagnetic disturbances generated by a single-ended primary inductance converter (SEPIC) switching power supply for radar applications. In the proposed model the passive components are replaced by their high frequency (HF) equivalent models and the active elements by the interference sources. The six windings transformer, which is one of the passive elements of the switching power supply allows the adaptation of voltage levels and provides galvanic isolation between input and output. It will be modeled by: a simplified model and then by a model taking into account coupling between the leakage inductances. The accuracy of each model is established by comparing the simulation results of conducted electromagnetic interference (EMI) to measurement results.

Mots clés: power electronics; Electromagnetic interference (EMI); emission; frequency domain analysis; measurement; power electronics.

Domaines: Energie électrique

Kahina Mostefaoui-Kasri, Yacine Azzouz, Mohamed Benbouzid, Anne Louis, Bélahcène Mazari, et al.. Calculation of conducted EMI generated by single-ended primary inductance converter. International Review of Electrical Engineering, 2012, 7 (3), pp.4469-4479. ⟨hal-00926436⟩