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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 865Unknown Offset Free MPC for Buck Converter

Unknown Offset Free MPC for Buck Converter

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Abstract:

Buck converters are commonly used as DC power supplies. To deal with the parameters uncertainty in R-L (resistance-inductance), an Unknown Offset Free Model Predictive Control (UOFMPC) method for buck converters have been proposed in this paper. Firstly, a continuous model for buck converters is established. Based on it, a discrete model with fixed sampling time is derived and the output of controller is set as the direct switch on/off signals. Secondly, one-step MPC method aimed at optimizing the output voltage with recursive least squares algorithm for parameters identification is given to satisfy the ability of adaptation in parameters. Finally, both the model and control scheme are validated by simulation in MATLAB/Simulink.

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Advanced Engineering Technology III

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Periodical:

Applied Mechanics and Materials (Volume 865)

Pages:

175-180

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.865.175

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Online since:

June 2017

Authors:

Po Li, Rui Nan Liu*, Xiang Hui Ma

Keywords:

Buck Converter, MPC, Offset Free, Parameters Identification, Voltage Tracking

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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