Title: EMI Reduction of a Soft-switched High Step-down Converter Using Passive Compensation Method
Authors: Yazdani, Mohammad Rouhollah
Ariyan, Ali
Citation: 2018 International Conference on Applied Electronics: Pilsen, 11th – 12th September 2018, Czech Republic, 173-178.
Issue Date: 2018
Publisher: Západočeská univerzita v Plzni
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/35496
ISBN: 978–80–261–0721–7
ISSN: 1803–7232
Keywords: elektromagnetické rušení;sestupný převaděč vysokého napětí;kondenzátor chladiče;pasivní kompenzace;měkké přepínání
Keywords in different language: electromagnetic interference;high step-down converter;heat-sink capacitor;passive compensation;soft switching
Abstract in different language: In this paper, an EMI reduction method is applied to a new high step-down converter which has a coupled inductor, a synchronous rectifier and method with an auxiliary soft-switching cell. The freewheeling diode is replaced with a synchronous rectifier (SR) and zero-voltage-transition (ZVT) condition is provided for the main and SR switches. The auxiliary switch acts under zero-current switching. To reduce conducted electromagnetic emissions, a passive method is utilized by adding another winding on the core of converter coupled inductor to compensate the common-mode noise current generated by the parasitic capacitor of the main switch. The operating modes and theoretical waveforms are presented and simulation results of a 100 W-100 kHz converter are shown to verify the theoretical analysis. The conducted EMI predictions confirm the benefit of the passive compensation method.
Rights: © Západočeská univerzita v Plzni
Appears in Collections:Applied Electronics 2018
Applied Electronics 2018

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