Title :
Modeling and dynamic analysis of paralleled DC/DC converters with master-slave current sharing control
Author :
Rajagopalan, J. ; Xing, K. ; Guo, Y. ; Lee, F.C. ; Manners, Bruce
Author_Institution :
Bradley Dept. of Electr. Eng, Virginia Power Electron. Center, VA, USA
Abstract :
A simple, application-oriented, transfer function model of paralleled converters employing master-slave current-sharing (MSC) control is developed. Dynamically, the master converter retains its original design characteristics; all the slave converters are forced to depart significantly from their original 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
Keywords :
DC-DC power convertors; electric current control; stability; current share compensator; current-controlled current sources; dynamic analysis; loop gains; master converter; master-slave current sharing control; paralleled DC/DC converters; paralleled converters; slave converters; system output impedance; system stability assessment; transfer function model; Centralized control; Circuits; DC-DC power converters; Impedance; Master-slave; NASA; Performance gain; Power system modeling; Power system stability; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1996. APEC '96. Conference Proceedings 1996., Eleventh Annual
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-3044-7
DOI :
10.1109/APEC.1996.500513
