Series connected IGCT based three-level Neutral Point Clamped voltage source inverter pole for high power converters

Author

Bhattacharya, Subhashish ; Babaei, Saman

Author_Institution

Dept. of Electr. Eng., North Carolina State Univ., Raleigh, NC, USA

fYear

2011

fDate

17-22 Sept. 2011

Firstpage

4248

Lastpage

4255

Abstract

This paper reports design and experimental verification of series connected 4.5kV, 4kA IGCT based high power three-level Neutral Point Clamped (NPC) inverter pole. A simplified EMTDC model of a three level NPC inverter pole for different switching transitions based on experimental results is presented which is used for designing of RC snubber circuit for the IGCT switches. Dynamic voltage sharing issues and advantages of series connected 4.5kV, 4kA IGCT for high power 12 MVA three-level NPC inverter pole are investigated. Experimental results are presented for two three level NPC inverter poles operated as H-bridge with three series connected 4.5kV, 4kA IGCT per switch.

Keywords

RC circuits; power convertors; EMTDC model; H-bridge; RC snubber circuit; apparent power 12 MVA; current 4 kA; dynamic voltage sharing; high power converters; series connected IGCT; switching transitions; three level NPC inverter pole; three-level neutral point clamped voltage source inverter pole; voltage 4.5 kV; Capacitors; Inverters; Logic gates; Snubbers; Switches; Valves; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-4577-0542-7

Type

conf

DOI

10.1109/ECCE.2011.6064349

Filename

6064349