NDLI: Dual-frequency-controlled C-TPTL DC−DC converter for high and wide input voltage applications

Content Provider	IET Digital Library
Author	Liu, Fuxin Zhang, Wuyang Kennel, Ralph
Abstract	Traditional three-level (TL) DC−DC converters are suitable for the power conversion with high-input voltage, but the performance of the converter is difficult to be optimized within a wide-input-voltage range. A combined three-phase TL (C-TPTL) DC−DC converter suitable for high and wide input-voltage applications was investigated, and the topology consists of a TL clamping cell and a three-phase full-bridge (TPFB) sub-converter cell. The TL clamping cell ensures that the voltage stress on switches is half of the input voltage, and the TPFB cell reduces the current rating of switches and the output filter requirement. Meanwhile, the C-TPTL converter can operate in the half-input-voltage mode and full-input-voltage mode by controlling the switching sequence of the TL clamping cell. The relationship between the input and output voltages, and the choice of the boundary between different operation modes were discussed. Also, the loss analysis to achieve the optimal efficiency was included. A 200–600 V input and 48 V–20 A output prototype was fabricated and tested in the lab, and the experimental results can effectively verify the theoretical analysis and the performance of the C-TPTL converter.
Starting Page	2531
Ending Page	2537
Page Count	7
ISSN	17554535
Volume Number	11
e-ISSN	17554543
Issue Number	Issue 15, Dec (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/11/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5381
Journal	IET Power Electronics
Publisher Date	2018-10-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	DC-DC Power Converter Dual-frequency-controlled C-TPTL DC−DC Converter Full-input-voltage Mode Half-input-voltage Mode High Input Voltage Application Loss Analysis Optimisation Optimisation Technique Output Filter Requirement Power Electronics Power Supply Supervisory Circuit Switching Sequence Three-phase Full-bridge Sub-converter Cell TL Clamping Cell TPFB Sub-converter Cell Voltage Stress Wide Input Voltage Application
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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