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Sliding mode tracking control of output voltage in multiple modular boost power converters using the method of stable system center

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2 Author(s)
Patterson, J. ; U.S. Army Aviation and Missile Command; Research, Development and Engineering Center, Redstone Arsenal, AL 35808, USA (email: ; Shtessel, Y.B.

Application of sliding mode control to the direct tracking of an arbitrary output voltage profile in multiple modular DC-to-DC boost power converters is studied. In particular, the case of two boost converters sharing a common primary source of electric supply (PSES) and driving independent loads is studied to demonstrate tracking control of multiple modular converters. Operating point analysis shows that the coupled converters have two possible operating points, which result in nonminimum phase operation. It is demonstrated that one of these operating points results in a practical and physically realizable solution while the other does not. Sliding mode control by the method of stable system center is employed, and the nonminimum phase output tracking problem is reduced to a state-tracking problem. A numerical example and simulation demonstrates the effectiveness of the sliding mode control design.

Published in:

Decision and Control, 2005 and 2005 European Control Conference. CDC-ECC '05. 44th IEEE Conference on

Date of Conference:

12-15 Dec. 2005