NDLI: Parallel soft switching converter with fewer switch counts

Content Provider	IET Digital Library
Author	Lin, Bor Ren
Abstract	A parallel direct current (DC) to DC converter is presented for medium power applications. The studied converter includes three half-bridge circuits with sharing two power switches at high-voltage side to reduce switch counts. Three half-bridge circuits are connected by primary-parallel and secondary-parallel to reduce the current stress of power devices at low-voltage side. Each half-bridge circuit supplies one-third of the total power to the output load. Asymmetric pulse-width modulation is employed to generate the gated signals of the switches and regulate the output voltage. Based on the resonant behaviour of the output capacitance of power switches and the leakage inductance of the transformer, the zero-voltage switching turn-on of power switches can be achieved. Current doubler rectifier topology is adopted at the low-voltage side to have the advantage of low ripple current at output capacitor. A laboratory prototype with 1440 W power is built to verify theory analysis and effectiveness of the studied converter.
Starting Page	589
Ending Page	591
Page Count	3
ISSN	00135194
Volume Number	54
e-ISSN	1350911X
Issue Number	Issue 9, May (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/54/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2018.0571
Journal	Electronics Letters
Publisher Date	2018-03-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asymmetric Pulse-width Modulation Bridge Circuit Capacitor Current Doubler Rectifier Topology Current Stress Reduction DC-DC Power Converter Gated Signal Generation Half-bridge Circuit Inductors And Transformer Leakage Inductance Low Ripple Current Output Capacitance Output Capacitor Output Voltage Regulation Parallel Direct Current DC to DC Converter Parallel Soft Switching Converter Power 1440 W Power Device Power Electronics Power Supply Power Switch PWM Power Converter Rectifying Circuit Relay And Switches Resonant Behaviour Resonant Power Converter Supervisory Circuit Switch Count Reduction Switched Mode Converter Switching Converter Transformer Zero Current Switching Zero Voltage Switching
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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