A control method of virtual DC machine based on bus power compensation

The load on the bus of multi-electric aircraft is impulsive and unstable, which will lead to frequent fluctuation of system output power, which will have a great impact on DC bus and even the whole power supply system, affect system reliability and power quality, and even lead to system instability, oscillation and even collapse. To improve the stability of aircraft power supply system under impulse load power impact, this paper proposes a virtual DC machine control (VDCM) method based on virtual capacitors (VC) droop control, which effectively reduces the influence of load power fluctuation on bus voltage.