Performance Evaluation of SiC MOSFETs for Isolated DC-DC Conversion in Medium Voltage Photovoltaic Power Plants
Conference: PCIM Europe 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2022 - 05/12/2022 at Nürnberg, Germany
doi:10.30420/565822043
Proceedings: PCIM Europe 2022
Pages: 9Language: englishTyp: PDF
Authors:
Ngo, Minh Nhut; Martin, Jeremy; Bier, Anthony (French Alternative Energies and Atomic Energy Commission – CEA, France)
Ladoux, Philippe (University of Toulouse, Laboratory of Plasma and Energy Conversion – LAPLACE, France)
Sanchez, Sebastien (University of Toulouse, Laboratory of Plasma and Energy Conversion – LAPLACE, France & Icam, Site de Toulouse, France)
Abstract:
Over the last decade, the rating of photovoltaic power stations has increased progressively; however, they still operate at low voltage level. Hence, new architectures with an intermediate MVDC collector are investigated. This paper introduces a new topology of isolated DC/DC converter based on 1.7 kV and 3.3 kV SiC power modules, which allows the connection of PV arrays to the MVDC collector upstream from the MVAC distribution grid. As a prelude to the realization of a full-scale prototype, 1.7 kV SiC MOSFETs are characterized in both hard- and soft-switching condition. Finally, a study supported by simulations pointed out that the proposed converter shows a high efficiency (> 98.5%).