Comparative evaluation of IGCT and GTO thyristor for series connection in high power voltage source inverter based FACTS applications

Author

Bhattacharya, Subhashish

Author_Institution

North Carolina State Univ., Raleigh

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

9

Abstract

In this paper, comparative evaluation between 4.5 kV, 4 kA GTO thyristor and IGCT for series connection in high power three-level Neutral Point Clamped (NPC) voltage source inverter applications is reported. Turn-off tests for GTO and IGCT are compared with RCD snubber at high dc voltage and current. Small RC snubber design is optimized and series connection issues for IGCT are addressed. Experimental results are compared for a two three-level NPC inverter poles operated as H-bridge with three series connected 4.5 kV, 4 kA GTO Thyristors and IGCTsper switch.

Keywords

flexible AC transmission systems; invertors; snubbers; thyratrons; FACTS; RC snubber design; flexible AC transmission systems; high power voltage source inverter; three-level neutral point clamped inverter; Automatic voltage control; Design optimization; Flexible AC transmission systems; Inverters; Medium voltage; Motor drives; Snubbers; Switches; Testing; Thyristors; Device characterization; GTO Thyristor; H-bridge; IGCT; NPC (Neutral-Point Clamped) inverter; connection; series; snubber; voltage source converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417755

Filename

4417755