Armbruster, CorneliusCorneliusArmbrusterSchöner, ChristianChristianSchönerSchoenbett, T.T.SchoenbettKloenne, A.A.KloenneMerz, R.R.Merz2022-03-132022-03-132017https://publica.fraunhofer.de/handle/publica/40123310.1109/SBMicro.2017.7990724The 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.en621697conference paper