Title :
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
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;
Journal_Title :
Industry Applications, IEEE Transactions on
