NDLI: Dual-output AC–DC converter with three-port bridgeless PFC and non-isolated DCX

Content Provider	IET Digital Library
Author	Xu, Xinyu Jia, Yihang Wu, Hongfei Zhang, Yanfeng
Abstract	This study proposed a dual-output AC–DC converter based on three-port bridgeless power factor corrector (TPB-PFC) and a non-isolated resonant DC-transformer (Ni-DCX) for dual-output DC voltage applications. A constant DC output voltage and a variable DC output voltage are provided simultaneously by the proposed AC–DC converter. Based on the TPB-PFC converter, a stacked power conversion structure with reduced power conversion stage is presented. Therefore, lower power losses and higher efficiencies are achieved. Meanwhile, soft switching of all the power devices in the Ni-DCX is achieved with open-loop controlled and optimised operation of the Ni-DCX, resulting in easy control and higher efficiency. In addition, switching losses of the TPB-PFC are reduced thanks to the three-level characteristic. Operation principles and characteristics of both TPB-PFC and Ni-DCX converter, and modulation and control strategies of the proposed AC–DC converter are analysed in detail. Feasibility and effectiveness of the proposed solutions are verified experimentally with a 2 kW dual-output AC–DC prototype.
Starting Page	3319
Ending Page	3327
Page Count	9
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 15, Nov (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.1466
Journal	IET Power Electronics
Publisher Date	2020-07-31
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AC-DC Power Converter Constant DC Output Voltage Control of Electric Power System Dual-output AC–DC Converter Dual-output AC–DC Prototype Dual-output DC Voltage Application Ni-DCX Converter Nonisolated DCX Open-loop Controlled Operation Optimised Operation Power 2.0 KW Power Electronics Power Factor Correction Power Loss Power Supply Power Transformer Reduced Power Conversion Stage Resonant DC-transformer Soft Switching Stacked Power Conversion Structure Supervisory Circuit Switching Converter Three-level Characteristic Three-port Bridgeless PFC Three-port Bridgeless Power Factor Corrector TPB-PFC Converter Transformer And Reactors Variable DC Output Voltage Zero Voltage Switching
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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