Title :
Analysis and control design of paralleled DC/DC converters with current sharing
Author :
Thottuvelil, V. Joseph ; Verghese, George C.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Mesquite, TX, USA
Abstract :
The paper presents a general small-signal stability analysis of a paralleled DC/DC power converter system. The framework is specialized in order to include both the “democratic” and “master-slave” current-sharing schemes. Design examples illustrate how to obtain stable current sharing. The authors show how paralleled power converters can become unstable (even when active current-sharing is absent) and discuss the influence of the number of power converters paralleled
Keywords :
DC-DC power convertors; circuit stability; control system analysis; control system synthesis; electric current control; transfer functions; transient response; active current-sharing; control design; democratic current-sharing scheme; design examples; master-slave current-sharing scheme; paralleled DC/DC power converters; small-signal stability analysis; Availability; Control design; DC-DC power converters; Impedance; Master-slave; Paper technology; Signal processing; Stability analysis; Stress; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3704-2
DOI :
10.1109/APEC.1997.575646
