Flatness based control of an HVDC bus powered by a turboshaft with multiple generators and optimization of power sharing

The emergence of electrical propelled aircraft increases the degree of electrification of aircraft. Electric generation is achieved by coupling a gas turbine with multiple electrical generators, which allows a large autonomy and a very favourable power weight ratio compared to an electrical storage system. The study focuses on a one voltage control of a DC grid using flatness properties. Theses properties are proposing a simple solution to both comply with stability and weight of passive components criteria. In addition, a power sharing model is proposed to distribute the power generation among electric generator in order to improve global efficiency.