A 100 kHz SiC Sparse Matrix Converter

Author

Friedli, T. ; Round, S.D. ; Kolar, J.W.

Author_Institution

ETH Zurich, Zurich

fYear

2007

Firstpage

2148

Lastpage

2154

Abstract

A Sparse Matrix Converter (SMC) is a direct AC/AC converter that contains no large energy storage components. A 100 kHz, 1.5 kW SiC SMC is presented, which uses 1300 V, 4 A SiC JFET cascode devices. The SMC is operated from a 50 Hz, 230 V mains supply and has a predicted efficiency of 94%. A tower-like construction results in a volume of 1 liter and a power density of 1.5 kW/liter (25 W/in³). The measured waveforms verify matrix operation and show that the SiC JFET cascode devices have turn-on switching times of 30 ns. Analysis shows that the SMC heat sink and EMI filter volume can be minimized to 0.14 liters if the switching frequency is reduced to 40 kHz.

Keywords

AC-AC power convertors; JFET circuits; electromagnetic interference; heat sinks; EMI filter; JFET cascode devices; SiC; current 4 A; direct AC-AC converter; frequency 100 kHz; frequency 50 Hz; heat sink; matrix operation; power 1.5 kW; sparse matrix converter; switching frequency; tower-like construction; turn-on switching time; voltage 1300 V; voltage 230 V; Aircraft; Energy storage; Matrix converters; Power generation; Schottky diodes; Silicon carbide; Sliding mode control; Sparse matrices; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2007. PESC 2007. IEEE

Conference_Location

Orlando, FL

ISSN

0275-9306

Print_ISBN

978-1-4244-0654-8

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2007.4342340

Filename

4342340