Investigation of a high-power three-level quasi-resonant DC-link voltage-source inverter

Author

Brückner, Thomas ; Bernet, Steffen

Author_Institution

Inst. of Electr. Power Eng., Tech. Univ. Dresden, Germany

Volume

37

Issue

2

fYear

2001

Firstpage

619

Lastpage

627

Abstract

This paper investigates the feasibility of a quasi-resonant DC-link soft-switching principle for voltage-source inverters (VSIs) in the megawatt power range. An evaluation of a three-level quasi-resonant DC-link VSI (3L-QRDCWSI) featuring integrated gate-commutated thyristors (IGCTs) and a comparison-to a commercially available three-level IGCT-VSI is presented. Extensive loss measurements of IGCTs under hard- and soft-switching conditions are the basis for the design and the comparison of the inverters. Aside from converter losses, other important aspects such as control, protection, and reliability are addressed

Keywords

DC-AC power convertors; invertors; loss measurement; resonant power convertors; switching circuits; thyristor convertors; thyristors; IGCTs; VSI; control; integrated gate-commutated thyristors; loss measurements; power converter losses; protection; reliability; soft-switching principle; three-level quasi-resonant DC-link voltage-source inverter; Filters; Insulated gate bipolar transistors; Protection; Pulse width modulation converters; Pulse width modulation inverters; Resonant inverters; Switching frequency; Thyristors; Topology; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.913729

Filename

913729