Current-fed quasi-Z-source H7 inverter with reduced stress on SiC power devices

• Autorzy: Trochimiuk P. , Zdanowski M. , Rabkowski J.

Identyfikatory

DOI

10.24425/bpasts.2019.131568

• Języki publikacji: EN

Abstrakty

EN

This paper discusses selected problems regarding a high-frequency improved current-fed quasi-Z-source inverter (iCFqZSI) designed and built with SiC power devices. At first, new, modified topology of the impedance network is presented. As the structure is derived from the series connection of two networks, the voltage stress across the SiC diodes and the inductors is reduced by a factor of two. Therefore, the SiC MOSFETs may be switched with frequencies above 100 kHz and volume and weight of the passive components is decreased. Furthermore, additional leg with two SiC MOSFETs working as a bidirectional switch is added to limit the current stress during the short-through states. In order to verify the performance of the proposed solution a 6 kVA laboratory model was designed to connect a 400 V DC source (battery) and a 3£400 V grid. According to presented simulations and experimental results high-frequency iCFqZSI is bidirectional – it may act as an inverter, but also as a rectifier. Performed measurements show correct operation at switching frequency of 100 kHz, high quality of the input and output waveforms is observed. The additional leg increases efficiency by up to 0.6% – peak value is 97.8%.

Słowa kluczowe

EN

inverters; silicon carbide; power MOSFET; battery; energy storage

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2019
• Tom: Vol. 67, nr 6
• Strony: 1085--1094
• Opis fizyczny: Bibliogr. 31 poz., rys., tab.

Twórcy

autor

Trochimiuk P.

• Warsaw University of Technology, Faculty of Electrical Engineering, 75 Koszykowa St., 00-662 Warsaw, Poland

autor

Zdanowski M.

• Warsaw University of Technology, Faculty of Electrical Engineering, 75 Koszykowa St., 00-662 Warsaw, Poland

autor

Rabkowski J.

• Warsaw University of Technology, Faculty of Electrical Engineering, 75 Koszykowa St., 00-662 Warsaw, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).