A study on power losses of the 50 kVA SiC converter including reverse conduction phenomenon

• Autorzy: Rąbkowski J. , Płatek T.

Identyfikatory

DOI

10.1515/bpasts-2016-0099

• Języki publikacji: EN

Abstrakty

EN

This paper deals with performance of the 50 kVA three-phase converter built with switches based on SiC MOSFET and anti-parallel Schottky diodes. In contrast to popular IGBT converters, a negative switch current is capable of flowing through the reverse conducting transistor, which results in different distribution of power losses among the devices. Thus, equations describing the conduction power losses of the transistor and diode are improved and verified by means of circuit simulations in Saber. Moreover, a comparison of power losses calculated with the use of standard and new equations is also shown. Total power losses in three SiC MOSFET modules of a 50 kVA converter operating at 20 kHz are up to 30% lower when reverse conduction is taken into account. This shows the importance of the discussed problem and proves that much better accuracy in the estimation of power losses and junction temperatures of SiC devices may be obtained with the proposed approach.

Słowa kluczowe

EN

power losses; three-phase converter; MOSFET; Schottky diode; reverse conduction

PL

straty mocy; konwerter trójfazowy; MOSFET; dioda Schottky'ego; odwrotne przewodzenie ciepła

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2016
• Tom: Vol. 64, nr 4
• Strony: 907--914
• Opis fizyczny: Bibliogr. 25 poz., rys., wykr.

Twórcy

autor

Rąbkowski J.

• Warsaw University of Technology, Institute of Control and Industrial Electronics, 75 Koszykowa St., 00-662 Warsaw, Poland

autor

Płatek T.

• Warsaw University of Technology, Institute of Control and Industrial Electronics, 75 Koszykowa St., 00-662 Warsaw, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.