FENomenal Friday: Electrification Of Agricultural Andconstruction Machinery

Prof. Dr.-Ing. Marco Jung, Anton Gorodnichev and Prof. Dr.-Ing. Jens Friebe

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Veranstaltungsort:

Electrification of agricultural andconstruction machinery

Modular ScalableMedium-Voltage Converter Based on SiC Components for Electrified Agriculturaland Construction Machines as well as DC Grids.

How can efficient and compact DC-DC converters berealized for the electrification of agricultural and construction machines, aswell as for future DC grids?

Direct supply of agricultural and construction machinery via a medium-voltage DC cable requires the use of novel components, innovative control methods and optimization of the converters in terms of volume and weight. The development of a medium-frequency transformer that combines an output power of several hundred kilowatts with a high operating frequency also poses a particular challenge.

In the scope of the presentation, the project results of the publicly funded project ‘MUSiCel’ (BMWK, PtJ) will be presented, in which a galvanically isolated DC-DC converter was built based on SiC components and which combines a nominal power of 250 kW with a switching frequency of 50 kHz while achieving an efficiency of over 98%.

In a nutshell the topics will be:

• Electrification of agricultural and construction machines

• 250 kW, 50 kHz DC-DC converter with 98 % efficiency

• 3,3kV SiC-Semiconductors

• Medium Frequency transformer for galvanic isolation (Design, Dimensioning, Construction)