The Hybrid-Cascaded DC–DC Converters Suitable for HVdc Applications

Author

Jie Yang ; Zhiyuan He ; Hui Pang ; Guangfu Tang

Author_Institution

Dept. of DC Power Transm. Technol., State Grid Smart Grid Res. Inst., Beijing, China

Volume

30

Issue

10

fYear

2015

fDate

Oct. 2015

Firstpage

5358

Lastpage

5363

Abstract

A dc-dc converter is essential for interconnecting HVdc networks of different voltage levels. This letter introduces a new family of dc-dc converters consisting of semiconductor switches and stack of submodules, which is named as hybrid-cascaded dc-dc converter (HCDC). This concept shows very attractive capital costs and low power losses. In this letter, the detailed operating principle of the HCDC is analyzed. Simulation results are obtained from PSCAD/EMTDC to verify the feasibility of the converters. The performances of the converters are evaluated in detail.

Keywords

DC-DC power convertors; HVDC power convertors; HCDC; HVDC network interconnection; PSCAD-EMTDC; capital costs; hybrid-cascaded DC-DC Converters; low power losses; semiconductor switches; submodules; voltage levels; Capacitors; Control systems; DC-DC power converters; Energy storage; HVDC transmission; Insulated gate bipolar transistors; Voltage control; HVDC applications; HVdc applications; Hybrid cascaded dc-dc converters; hybrid cascaded dc???dc converters; power losses; soft-switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2015.2420666

Filename

7081342