Dual-voltage high power converter for a distributed power system in heavy traction, using high-voltage IGBT´s

Author

Fratelli, L. ; Giannini, G.

Author_Institution

Ansaldo Trasporti-CRIS, Napoli, Italy

Volume

2

fYear

1996

fDate

23-27 Jun 1996

Firstpage

1414

Abstract

The design of a two-stage power converter for heavy traction applications, using 3.3 kV 1200 A IGBT modules is presented. The power converter is designed for a dual voltage traction system (3 kV DC, 25 kV AC), so that the first stage is configurable as a step-down or as a four quadrant power converter, whereas the second is an inverter. Initial tests on modules and a thermal analysis revealed that such modules suffer from high losses, so their switching frequency must be kept low, and the employment of liquid cooling is suggested in order for junction temperature and ripple to be limited, and reliability improved

Keywords

DC-AC power convertors; DC-DC power convertors; bipolar transistor switches; insulated gate bipolar transistors; invertors; power bipolar transistors; power semiconductor switches; power supplies to apparatus; switching circuits; traction; 1200 A; 25 kV; 3 kV; 3.3 kV; distributed power system; dual-voltage power converter; four-quadrant power converter; heavy traction applications; inverter; junction temperature; liquid cooling; power IGBT switches; reliability improvement; step-down power converter; switching frequency; tests; thermal analysis; two-stage power converter; Analog-digital conversion; Employment; Insulated gate bipolar transistors; Inverters; Liquid cooling; Power systems; Switching frequency; Temperature; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE

Conference_Location

Baveno

ISSN

0275-9306

Print_ISBN

0-7803-3500-7

Type

conf

DOI

10.1109/PESC.1996.548767

Filename

548767