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Study on inrush current phenomenon in DC-DC converter with isolating transformer

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3 Author(s)
Daming Zhang ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore ; King Jet Tseng ; Yitao Liu

This paper numerically studies the inrush current phenomenon in a DC-DC converter with isolating transformer. It uses Jiles-Atherthon method to model magnetic core used in isolating transformer. Due to fast change of switching duty-cycle to suit the load change, magnetic core experiences a large change of flux density, thereby inducing a large inrush current, though the operating point of the magnetic core is still well below the saturation point. This paper also shows that by introducing an intermediate duty-cycle stage, such kind of inrush current can be significantly reduced.

Published in:

Universities Power Engineering Conference (AUPEC), 2010 20th Australasian

Date of Conference:

5-8 Dec. 2010