Modelling and Simulation of the Logical Structure of Aircraft Power Distribution Systems

Increasingly more electrical devices are being developed in modern aircraft and will result in an increase in airborne electronic equipment fed by power electronic converters. With aircraft power system being sizable, the logical structure of aircraft power distribution systems, which affects the stability of aircraft power system, is becoming more complex. In this paper, we establish a mathematical model of the important modules of aircraft electrical power distribution system. Then the fault conditions are analyzed under a single generator failure and three-phase short circuit of transformer rectifier unit. The waveforms of voltage and current are analyzed to assess the logic operation of the power distribution system under fault conditions. It is demonstrated that the model and simulation of the components can be used to simulate the operation of electrical power distribution systems in different states.