Abstract：To solve the problem that the line parameters of the power supply circuit of aircraft transformer rectifier could affect the stability of system, the influence trend of the line parameters on the stability was analyzed to select the appropriate parameters. The dq transform method was used to transform the power supply circuit of converter rectifier, and the mathematical model of circuit was obtained from the equivalent circuit. The steady-state operating point data were obtained by power flow calculation of the power supply circuit of converter rectifier, and the sensitivity of the line parameters was calculated at the steady-state operating point based on the circuit mathematical model. The influence trend of parameters on the small disturbance stability of the power supply circuit of converter rectifier was analyzed emphatically. The Simulink was used to simulate and verify the sensitivity calculation. The results show that increasing inductance, resistance and DC inductance on AC side, or reducing inductance and load power on DC side is beneficial to improve the stability of the power supply circuit of converter rectifier.
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2021, Vol. 42 
