Title :
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
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;
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
DOI :
10.1109/EPE.2007.4417755
