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Modelling and control of a Buck converter
Blekinge Institute of Technology, School of Engineering.
2011 (English)Independent thesis Basic level (degree of Bachelor)Student thesis
Abstract [en]

DC/DC buck converters are cascaded in order to generate proper load voltages. Rectified line voltage is normally converted to 48V, which then, by a bus voltage regulating converter also called the line conditioner converter, is converted to the bus voltage, e.g. 12V. A polynomial controller converter transforms the 12V into to a suitable load voltage, a fraction of or some few voltages. All cascaded converters are individually controlled in order to keep the output voltage stable constant. In this presentation focusing on the polynomial controller converter implemented as Ericsson’s buck converter BMR450. In this paper modeling, discretization and control of a simple Buck converter is presented. For the given DC-DC-Converter-Ericsson BMR 450 series, analyzing the disturbance properties of a second order buck converter controllers by a polynomial controller. The project is performed in Matlab and Simulink. The controller properties are evaluated for measurement noise, EMC noise and for parameter changes.

Place, publisher, year, edition, pages
2011. , 50 p.
Keyword [en]
polynomial controller, second order, buck converter
National Category
Discrete Mathematics Signal Processing Telecommunications
URN: urn:nbn:se:bth-2207Local ID: diva2:829474
Physics, Chemistry, Mathematics
+46-762795822Available from: 2015-04-22 Created: 2011-06-22 Last updated: 2015-06-30Bibliographically approved

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Discrete MathematicsSignal ProcessingTelecommunications

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