Title :
Design of a three-phase AC/DC converter with paralleled SiC MOSFETs
Author :
Rabkowski, Jacek ; Piasecki, Szymon ; Kazmierkowski, Marian P.
Author_Institution :
Inst. of Control & Ind. Electron., Warsaw Univ. of Technol., Warsaw, Poland
Abstract :
This paper describes a design procedure of a three-phase AC/DC converter with special focus on semiconductors: paralleled SiC MOSFETs and SiC Schottky diodes. The converter is aimed to operate as a 14kVA Support Converter (SC) for the 55kVA AC drive system. The SC acts as active parallel filter during normal operation of the drive and is also capable to return part of the regenerative breaking energy to the supply grid. Initial calculations of power losses conducted with Matlab are verified by simulations in SABER software. Laboratory model designed on the base of calculations and simulations was tested with special attention to power losses measurements. Total efficiency of the AC/DC converter (including LC filter and gate drivers) measured during inverter operation is on the level of 98.8% at switching frequency of 40kHz.
Keywords :
AC-DC power convertors; MOSFET; Schottky diodes; active filters; electric drives; power engineering computing; power measurement; regenerative braking; silicon compounds; wide band gap semiconductors; AC drive system; LC filter; Matlab; SABER software; SiC; SiC Schottky diodes; active parallel filter; apparent power 14 kVA; apparent power 55 kVA; frequency 40 kHz; gate drivers; inverter operation; paralleled SiC MOSFET; power loss measurements; regenerative breaking energy; supply grid; support converter; switching frequency; three-phase AC-DC converter; Loss measurement; MOSFET; Resistance; Semiconductor device measurement; Silicon carbide; Switching frequency; AC/DC converter; SiC MOSFET; parallel-connectio; power losses; simulations; three-phase;
Conference_Titel :
Power Electronics and Motion Control Conference and Exposition (PEMC), 2014 16th International
Conference_Location :
Antalya
DOI :
10.1109/EPEPEMC.2014.6980548
