Series Connected IGCT based High Power Three-Level Neutral Point Clamped Voltage Source Inverter Pole for FACTS Applications

Author

Bhattacharya, Subhashish

Author_Institution

Siemens Power Transmission & Distribution, NC

fYear

2005

fDate

16-16 June 2005

Firstpage

2315

Lastpage

2321

Abstract

This paper reports requirements, issues and design considerations for high power three-level neutral point clamped (NPC) inverter pole. Dynamic voltage sharing issues, viability and advantages of series connected 4.5 kV, 4 kA IGCT for high power 12 MVA three-level NPC inverter pole are investigated. IGCT turn-off tests at high DC voltage and rated current are used for snubber design and inverter pole clamp design, and to verify simulation results. Experimental results are presented for a two 12 MVA three-level NPC inverter poles operated as H-bridge with three series connected 4.5 kV, 4 kA IGCT per switch

Keywords

bridge circuits; flexible AC transmission systems; invertors; snubbers; thyristor applications; 12 MVA; 4 kA; 4.5 kV; FACTS applications; H-bridge; dynamic voltage sharing; inverter pole clamp design; neutral point clamped voltage source inverter pole; series connected IGCT; snubber design; Clamps; Diodes; Flexible AC transmission systems; Inverters; Snubbers; Switches; Testing; Thyristors; Valves; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th

Conference_Location

Recife

Print_ISBN

0-7803-9033-4

Type

conf

DOI

10.1109/PESC.2005.1581955

Filename

1581955