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Study on the Power Factor Correction Circuit Applying Multiple Coupling Inductor with Expandable Integrated Magnetic Structure  

Yoo, Jeong Sang (Department of Electronic Engineering, Cheongju University)
Gil, Yong Man (Department of Electronic Engineering, Cheongju University)
Ahn, Tae Young (Department of Electronic Engineering, Cheongju University)
Publication Information
Journal of the Semiconductor & Display Technology / v.17, no.1, 2018 , pp. 21-26 More about this Journal
Abstract
In this paper, a multiple coupling inductor with expandable-integrated magnetic structure was proposed to enable miniaturization of external switched mode power supply (SMPS) for a large display. Inductance formula of the proposed inductor structure was derived through magnetic circuit analysis for a simple inductance designing process. The proposed inductor was applied into a 1kW class interleaved bridgeless power factor correction circuit which requires four inductors, and experimental steady state result of the circuit was compared. According to the experimental result, it was found that the proposed multiple coupling inductor shows the electrical characteristics that can replace the conventional separated inductors and is suitable for miniaturization of the SMPS since the circuit configuration is possible with one shared inductor.
Keywords
Expandable Inductor Structure; Integrated Magnetic; Power Factor Correction; Interleaved Control; Bridgeless Rectifier;
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