GaN-based soft-switched active power buffer operating at ZCS – problems of start-up and shut-down

• Autorzy: Rąbkowski J. , Król K. , Zdanowski M. , Sochacki M.

Identyfikatory

DOI

10.24425/bpasts.2020.134175

• Języki publikacji: EN

Abstrakty

EN

This paper describes practical issues related to control of the active power buffer (APB) developed for a 2 kVA single-phase inverter. The buffer is designed using the latest GaN HEMTs controlled with triangular current mode to reduce switching losses, however, the switching frequency should be limited to 1 MHz. In the case of the presented analogue-digital controller, frequency is influenced by a reference current of the APB and circuit. Therefore, the operation at start-up and shut-down is especially challenging. A modified control algorithm that also includes pre-charging and discharging process of the energy buffer is presented and experimentally verified by series of tests of the 2 kVA GaN based inverter with the APB.

Słowa kluczowe

EN

GaN; power inverter; active buffer

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2020
• Tom: Vol. 68, nr 4
• Strony: 785--792
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Rąbkowski J.

• Warsaw University of Technology Department of Electrical Engineering, pl. Politechniki 1, 00-661 Warsaw, Poland

autor

Król K.

• Warsaw University of Technology Institute of Microelectronics and Optoelectronics, ul. Koszykowa 75, 00-662 Warsaw, Poland

autor

Zdanowski M.

• Warsaw University of Technology Department of Electrical Engineering, pl. Politechniki 1, 00-661 Warsaw, Poland

autor

Sochacki M.

• Warsaw University of Technology Institute of Microelectronics and Optoelectronics, ul. Koszykowa 75, 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).