Control design and voltage stability analysis of a droop-controlled electrical power system for more electric aircraft

摘要

This paper focuses on the analysis of asingle DC bus multi-generator Electrical Power System(EPS) for future More Electric Aircrafts (MEA). Within sucha single bus paradigm, the paper proposes a detailedcontrol design procedure and provides a stability analysisbased on the derivation of the output impedance of thesource subsystem and input impedance of the loadsubsystem, including control dynamics. The single buscharacteristic is analyzed and the stability properties ofthe EPS are investigated when supplying constant powerloads. In addition, the paper highlights the impact onstability of the number of parallel sources and of thepower sharing ratio. The theoretical analysis isinstrumental in designing an optimally stable single DCbus EPS. The key findings are validated by experimentalresults.