Method for determining at least one power limit of a hybrid drive train for a transport vehicle, in particular an aircraft

A method for determining at least one minimum power margin of a hybrid drive train an aircraft, the hybrid drive train comprising a plurality of power sources of different natures, a plurality of power consumers and a plurality of drive elements, each of the drive elements being associated with at least one of the power sources and at least one of the power consumers, the method comprising:

• acquiring measurements of a plurality of power parameters of the hybrid drive train, at least two of the measurements being expressed according to different magnitudes,
• comparing each of the measurements with at least one limitation threshold, determined respectively for each of the power parameters from a threshold database, in order to deduce therefrom at least one gross power margin for said power parameter,
• converting from a transformation database, the gross power margins of said power parameters into refined power margins expressed according to a same common magnitude,
• transposing from a yield database, the refined power margins into standardized power margins at at least one reference point of the hybrid drive train, the yield database determining yields of a transmission member between an acquisition point and the reference point,
• determining a source power margin, from the standardized power margins of the sources at said reference point, and a consumer power margin, from the standardized power margins of the power consumers at said reference point, and
• determining the minimum power margin by selecting a lowest power margin between the consumer power margin and the source power margin at said reference point.