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Performance Evaluation of Three-Phase, Two-Level Medium Voltage Power Stack Based on 10 kV SiC MOSFETs
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| Author(s) |
Morten Rahr NIELSEN, Martin KJÆR, Gao LIU, Zhixing YAN, Asger Bjørn JØRGENSEN, Hongbo ZHAO, Michael Møller BECH, Stig MUNK-NIELSEN |
| Abstract |
The performance of a 50 kVA three-phase, two-level medium voltage power stack based on 10 kV SiC MOSFETs has been evaluated under varying load conditions, i.e. voltage- and current-levels, coolant temperatures, and switching frequencies. A calorimetric measurement method is applied to estimate the power stack losses and its equivalent power stack efficiency. Experimental results from an inductive load test setup show an equivalent power stack efficiency of 98.8\% ± 0.56 at 6 kV DC-link voltage, 10 kHz switching frequency, and 40C coolant temperature with a maximum MOSFET junction temperature of less than 115C and thermal resistance of 0.38 K/W. |
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| Filename: | 0134-epe2025-full-15165413.pdf |
| Filesize: | 4.744 MB |
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| Type |
Members Only |
| Date |
Last modified 2025-08-31 by System |
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