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A Novel Power Shaping Stabilising Control Strategy for DC Power Systems with Constant Power Loads

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2 Author(s)
J. Wang ; Department of Electronic and Electrical Engineering, University of Sheffield, Mappin Street, Sheffield, S1, 3JD, United Kingdom, Fax: +44(0)114 2225196, E-mail: ; D. Howe

This paper describes a novel stabilising control strategy for DC power systems with constant power loads. The destabilising element associated with a constant power load is eliminated by reformulating the system dynamic equations in terms of the rate of change of energy, or instantaneous power. A power shaping control strategy is employed to regulate the output voltage, while maintaining large-signal system stability under all operating conditions. The proposed control strategy is simple, and easy to design and implement. Its utility and effectiveness are demonstrated by simulations and experiments.

Published in:

2007 IEEE Vehicle Power and Propulsion Conference

Date of Conference:

9-12 Sept. 2007