NDLI: Isolated DC-DC Converter for Bidirectional Power Flow Controlling with Soft-Switching Feature and High Step-Up / Down Voltage Conversion

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Isolated DC-DC Converter for Bidirectional Power Flow Controlling with Soft-Switching Feature and High Step-Up / Down Voltage Conversion

Content Provider	Semantic Scholar
Author	Shen, Chih-Lung Shen, You-Sheng Tsai, Cheng-Tao
Copyright Year	2017
Abstract	Abstract: In this paper, a novel isolated bidirectional DC-DC converter is proposed, which is able to accomplish high step-up/down voltage conversion. Therefore, it is suitable for hybrid electric vehicle, fuel cell vehicle, energy backup system, and grid-system applications. The proposed converter incorporates a coupled inductor to behave forward-and-flyback energy conversion for high voltage ratio and provide galvanic isolation. The energy stored in the leakage inductor of the coupled inductor can be recycled without the use of additional snubber mechanism or clamped circuit. No matter in step-up or step-down mode, all power switches can operate with soft switching. Moreover, there is a inherit feature that metal–oxide–semiconductor field-effect transistors (MOSFETs) with smaller on-state resistance can be adopted because of lower voltage endurance at primary side. Operation principle, voltage ratio derivation, and inductor design are thoroughly described in this paper. In addition, a 1-kW prototype is implemented to validate the feasibility and correctness of the converter. Experimental results indicate that the peak efficiencies in step-up and step-down modes can be up to 95.4% and 93.6%, respectively.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.mdpi.com/1996-1073/10/3/296/pdf
Language	English
Access Restriction	Open
Subject Keyword	Backup Converter Device Component Correctness (computer science) DC-to-DC converter Deoxycytidine Duty cycle Efficiency Emitter-coupled logic Entity Name Part Qualifier - adopted Extravasation FlyBack Galvanic isolation Inductor Device Component Network switch Prototype Recycling Semiconductor Semiconductor device Small Snubber Spectral leakage Switch Device Component Transformer Transistor voltage
Content Type	Text
Resource Type	Article

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