Comparative stability and sensitivity analysis of disturbance-observer-based disturbance attenuation methods in more electric aircraft DC power system

Based on the disturbance-observer (DOB)-based disturbance attenuation, this study proposed three disturbance feed-forward compensation methods in more electric aircraft DC power system. This study compares the observation performance of three DOBs, including traditional linear DOB, improved non-linear DOB and DOB based on extended Kalman filter. Theoretical and simulation results verify the stability promotion and sensitivity effects of the disturbance feed-forward compensators.