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Mathematical modeling of the generator failure detection process in the on-board network of an electrified aircraft

Currently, various systems, electrical airframe installations and on-board equipment for modern aircraft are undergoing major transformations, including on-board power sources (generator, integrated starter/generator), which are the subject of detailed analysis of this work. The key components in the field of power supply, which have a decisive impact on the operation of an electrical network of the electrified aircraft according to the MEA/AEA concept, are on-board sources. They can be in the form of synchronous generators based on permanent magnets PMSG, switchable reluctance starters/generators SR S/G in the form of a starter/generator unit, powered by 270 VDC and synchronous AC starter/generator units (AS S/G VF). The main purpose of the article is to model the on-board power source (generator, starter/generator) functioning in the on-board network of an electrified aircraft in the aspect of its failure. In addition, a mathematical model was created, describing physical phenomena in the process of starting and operating a three-phase machine (starter/generator) in the electric network of the aircraft, requirements for the accuracy of components included in the generator, test procedure and determination of the electromotive torque as well as voltages and three-phase currents were given, and on this basis in the final part of the paper, practical conclusions were formulated.