Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Development of a high efficient MPPT for space applications using GaN power transistors

: Armbruster, C.; Schöner, C.; Schoenbett, T.; Kloenne, A.; Merz, R.


MESAGO PCIM GmbH, Stuttgart:
PCIM Europe 2017, International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. Proceedings : Nuremberg, 16 - 18 May 2017
Berlin: VDE Verlag, 2017
ISBN: 978-3-8007-4424-4
6 pp.
PCIM Europe <2017, Nuremberg>
Conference Paper
Fraunhofer ISE ()

The contribution evaluates a maximum power point tracker (MPPT) designed as power conditioning unit for space applications. The results of the study show that the 3-leg interleaved buck converter and the proposed operation mode offer a superior solution in order to meet the specific demands of power electronics in Low Earth Orbit (LEO) satellites. By implementing gallium nitride power transistors ideal heat dissipation and a high power-to-weight ratio of 10 kW/kg can be achieved. Furthermore a high efficiency of more than 97.5 % and a continuous power point optimization of the solar array lead to a lower overall system weight.