Analysis of Synchronous Generator Self-Excitation under Capacitive Load Condition in Variable-Frequency Aviation Power System

As power electronic converters become more widely used in aviation systems, the associated capacitive loads harmonic filter circuits increase accordingly. The risk of self-excitation aeronautical synchronous generators due to is thus increased. Compared with a generator conventional fixed-frequency system, this process complicated variable-frequency supply (360–800 Hz), as both varied frequency and loading conditions contribute self-excitation. To quantify effect, our study, series-parallel model simplified RLC under was built. criterion self-excitation, given terms impedance load impedance, then derived. facilitate configuration design case an comprehensive analysis influences system on conducted. A graphical approach proposed determine by comparing series reactance resistor three critical impedances corresponding criteria, which intuitive enables one visualize tendency frequencies effectively. Finally, influence variable verified simulation results.