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Optimal PWM control of switched-capacitor DC/DC power converters via model transformation and enhancing control techniques

By Charlotte Yuk-Fan Ho, Bingo Wing-Kuen Ling, Yan-Qun Liu, Peter Kwong-Shun Tam and Kok-Lay Teo

Abstract

Abstract—This paper presents an efficient and effective method\ud for an optimal pulse width modulated (PWM) control of\ud switched-capacitor DC/DC power converters. Optimal switching\ud instants are determined based on minimizing the output ripple\ud magnitude, the output leakage voltage and the sensitivity of the\ud output load voltage with respect to both the input voltage and the\ud load resistance. This optimal PWM control strategy has several\ud advantages over conventional PWM control strategies: 1) It does\ud not involve a linearization, so a large signal analysis is performed.\ud 2) It guarantees the optimality. The problem is solved via both the\ud model transformation and the optimal enhancing control\ud techniques. A practical example of the PWM control of a\ud switched-capacitor DC/DC power converter is presented

Topics: H660 Control Systems, H600 Electronic and Electrical Engineering
Publisher: IEEE
Year: 2008
DOI identifier: 10.1109/TCSI.2008.916442
OAI identifier: oai:eprints.lincoln.ac.uk:2704

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Citations

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