Space Administration Modeling and Dynamic Analysis of Paralleled dc/dc Converters with Master-Slave Current Sharing Control

Abstract: A simple, application-oriented, transfer function model of paralleled converters employing Master-Slave Current-shadng (MSC) control is developed. Dynamically, the Master converter retains its original design characteristics; all the Slave converters are forced to depart significantly from their odginal design characteristics into current-controlled current sources. Five distinct loop gains to assess system stability and performance are identified and their physical significance is described. A design methodology for the current share compensator is presented. The effect of this current sharing scheme on "system output impedance " is analyzed. I