AC2DC-Converting AC connections to DC connections with higher power transmission

Research & Development

  • Investigation of the external connection mechanism for measuring the voltage drop of power semiconductors during operation
  • Evaluation of different modulations in the MMC and their effects on the DC side current and on the wiring of the converter.
  • Investigation of protection strategies using the temperature inference of the device based on its TSEP.
  • Develop a methodology that correlates the temperature of the device and the circulating current
© Fraunhofer ISIT/ CAU Kiel

USPs & Benefits

  • DC voltage: 10 kV
  • AC voltage: 6 kV
  • Active Power: 100 kW
  • Number of bipolar cells: up to 48
  • Semiconductor blocking voltage: 1.7 kV
  • Semiconductor rated current: 300 A
  • Semiconductor maximum junction temperature: 175 °C
  • Switching frequency: 1 kHz
  • MMC overload capability
  • Independent TSEP on other variables outside of temperature
© Fraunhofer ISIT/ CAU Kiel

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