High power IGBT-based DC/DC converter with DC fault tolerance

Author

Jovcic, Dragan ; Zhang, Juyong

Author_Institution

Sch. of Eng., Univ. of Aberdeen, Aberdeen, UK

fYear

2012

fDate

4-6 Sept. 2012

Abstract

This paper studies a DC/DC converter based on IGBT-bridges which is suitable for connection to HVDC (High Voltage DC) and for building high power DC grids. The DC faults are of highest concern for DC grids, and the primary converter design aims are to achieve inherent current regulation under DC faults in addition to minimizing converter losses. Design studies show that a range of converter parameters exist which will give fault DC current magnitudes close to rated currents. It is shown that it is possible to have controllable operation even for worst case DC faults at either of the DC terminals. The results are confirmed using detailed PSCAD simulation on a 500MW 200kV/600kV DC/DC test converter.

Keywords

DC-DC power convertors; HVDC power convertors; HVDC power transmission; bridge circuits; fault tolerance; insulated gate bipolar transistors; losses; power bipolar transistors; power field effect transistors; power grids; DC fault tolerance; HVDC transmission grid; IGBT-bridge; PSCAD simulation; converter loss minimization; current regulation; fault DC current magnitude; high power IGBT-based DC-DC test converter; high voltage DC transmission grid; power 500 MW; voltage 200 kV; voltage 600 kV; Capacitors; Circuit faults; DC-DC power converters; Equations; Fault currents; Insulated gate bipolar transistors; Mathematical model; DC-DC power conversion; High Voltage DC transmission; IGBT converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference (EPE/PEMC), 2012 15th International

Conference_Location

Novi Sad

Print_ISBN

978-1-4673-1970-6

Electronic_ISBN

978-1-4673-1971-3

Type

conf

DOI

10.1109/EPEPEMC.2012.6397324

Filename

6397324