NDLI: Modular resonant DC/DC converter for DC grid system applications

Content Provider	IET Digital Library
Author	Lin, Bor Ren
Abstract	A modular resonant DC/DC converter for DC microgrid system applications is provided in this study. Half-bridge circuit cells are connected in series to reduce the voltage stress on each half-bridge circuit, so that power metal–oxide–semiconductor field-effect transistors with high-frequency operation can be used at high-voltage DC/DC converters and the converter size can be reduced. To balance input split voltages, flying capacitors are used and connected between each half-bridge circuit. Therefore, input split voltages can be balanced automatically in each switching cycle without using the complexity control scheme. Resonant circuit is used in each half-bridge cell to realise the zero-voltage turn-on for power switches and zero current turn-off for rectifier diodes over the wide load range. Therefore, the proposed modular resonant DC/DC converter with high-circuit efficiency can be achieved. The output sides of half-bridge circuit cells are connected in parallel to reduce the current stress of all passive components. Finally, the circuit performance of the proposed converter is evaluated by experiments.
Starting Page	952
Ending Page	958
Page Count	7
ISSN	17521416
Volume Number	11
e-ISSN	17521424
Issue Number	Issue 7, Jun (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/11/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2016.1021
Journal	IET Renewable Power Generation
Publisher Date	2017-04-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Balance Input Split Voltage Current Stress Reduction DC Microgrid System Application DC-DC Power Converter Distributed Power Generation Flying Capacitor Half-bridge Circuit Cell High-circuit Efficiency High-frequency Operation High-voltage DC-DC Converter Input Split Voltage Modular Resonant DC-DC Converter Power Metal-oxide-semiconductor Field-effect Transistors Power MOSFET Power Semiconductor Device Power Semiconductor Switches Power Switch Rectifier Diode Rectifying Circuit Relay And Switches Resonant Circuit Resonant Power Converter Voltage Stress Reduction Zero Current Turn-off Zero-voltage Turn-on
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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