The architecture of series distributed propulsion system on more electric aircraft is increasingly attractive to researchers. It adopts DC microgrid as power transmission system. To solve the energy distribution problem between energy storage system and power generation system in the DC microgrid, a steady-state power feedforward control is proposed. This method can effectively suppress the fluctuation of the DC bus, and can simply realize the power distribution of power generation system and energy storage system. The mathematical models of power generation system, energy storage system and motor propulsion system are studied, and the simulation results show that the DC bus voltage fluctuation of the system is acceptable, and the power balance is realized.

Series distributed propulsion system,Power feedforward,DC Microgrid,Bidirectional DC/DC