In order to improve the current sharing accuracy and bus voltage stability among distributed generators（DGs） in DC microgrids

a hybrid odd-order nonlinear droop gain（HNDG） control method for DC microgrids based on active-disturbance-rejection control（ADRC） is proposed. Firstly

the relationship between line impedance and current sharing effect as well as voltage regulation is analyzed by circuit analysis equation. The new hybrid odd-order nonlinear droop coefficient curve and its polynomial smooth fitting expression are derived. The bus voltage secondary compensation active-disturbance-rejection controller is designed. The controller can further suppress line impedance voltage drop and load power disturbance. Secondly

based on the DC microgrids small signal model and eigenvalue analysis method

the stability of the proposed droop control system is verified. Finally

the Matlab/Simulink multi-case simulation experments are used to prove the correctness and effectiveness of the proposed method.