Influence of dc-link bus voltage on power losses and thermal behavior of a bidirectional two-level dc-ac converter

Author

Spallier, F. ; Brockerhoff, Philip

Author_Institution

Dept. of Electron. Eng., FH JOANNEUM Univ. of Appl. Sci., Kapfenberg, Austria

fYear

2013

fDate

27-30 March 2013

Firstpage

1

Lastpage

4

Abstract

This paper presents the benefit of an increased dc-link bus voltage on power losses in a bidirectional two-level inverter. Inherent power losses in inverter originate in IGBTs and diodes among electric vehicles. A model is built to consider parameters from these devices, electric input (current, voltage, power factor) with improved accuracy to evaluate losses and estimate the junction temperature of IGBT and diode with the help of an equivalent thermal-electric model. Compared are two dc-link bus voltages of 400V and 700V. Also SiC-diode is applied to further improve efficiency in motoring and regeneration modes.

Keywords

DC-AC power convertors; electric vehicles; insulated gate bipolar transistors; invertors; power bipolar transistors; power semiconductor diodes; silicon compounds; wide band gap semiconductors; IGBT; SiC; bidirectional two-level dc-ac converter thermal behavior; dc-link bus voltage; diodes; electric input; electric vehicles; equivalent thermal-electric model; inverter; power losses; voltage 400 V; voltage 700 V; Insulated gate bipolar transistors; Inverters; Junctions; Semiconductor diodes; Silicon carbide; Switches; Temperature measurement; dc-link voltage; inverter efficiency; power losses; thermal behavior;

fLanguage

English

Publisher

ieee

Conference_Titel

Ecological Vehicles and Renewable Energies (EVER), 2013 8th International Conference and Exhibition on

Conference_Location

Monte Carlo

Print_ISBN

978-1-4673-5269-7

Type

conf

DOI

10.1109/EVER.2013.6521622

Filename

6521622