Analytical Approach of the AC-DC Interactions in Aerospace Electric Power Networks

The trend to more electrical embedded functions aboard future aircrafts makes it of crucial importance to reconsider long used solutions for the electric power distribution. We consider here a mixed ac/dc architecture and we propose a methodology to evaluate the interactions between the ac and dc sides (sometimes called "HVDC" (high-voltage direct current) networks) of such a network, through rectifiers, possibly associated with autotransformers. An analytical approach has been selected and the obtained relationships appear to be very useful for the designers of these networks: they are applicable to choose the characteristics of the architecture, as well as to adapt already existing standards for the specific needs of such solutions.