Series Connection of Snubberless IGBTs for 6.6 kV Transformerless Converters

Author

Okada, N. ; Takasaki, M. ; Narushima, J. ; Miyagawa, R. ; Katoh, S.

Author_Institution

Central Res. Inst. of Electr. Power Ind., Tokyo

fYear

2007

fDate

2-5 April 2007

Firstpage

1686

Lastpage

1691

Abstract

We developed a 6.6-kV 1-MVA transformerless converter making use of a snubberless insulated gate bipolar transistor (IGBT) 8-series connection using an active-gate-control. The active-gate-control can balance the collector voltage of IGBTs connected in series enabling the IGBT series connection. It allows the converter to output a high enough AC voltage to directly connect to 6.6-kV distribution lines. Therefore, the converter does not need a step-up and step-down transformer, and is extremely small and compact.

Keywords

insulated gate bipolar transistors; power convertors; power distribution; active-gate-control; apparent power 1 MVA; insulated gate bipolar transistor; power distribution; snubberless IGBT; transformerless converters; voltage 6.6 kV; Assembly; Circuit testing; Clamps; Driver circuits; Electrical equipment industry; Impedance; Insulated gate bipolar transistors; Power transformer insulation; Protection; Voltage control; Active-Gate-Control; series connection; snubberless; transformerless;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagoya, 2007. PCC '07

Conference_Location

Nagoya

Print_ISBN

1-4244-0844-X

Electronic_ISBN

1-4244-0844-X

Type

conf

DOI

10.1109/PCCON.2007.373189

Filename

4239379