A general approach to control a positive buck-boost converter to achieve robustness against input voltage fluctuations and load changes
A. Boora, Arash, Zare, Firuz, Ghosh, Arindam, & Ledwich, Gerard (2008) A general approach to control a positive buck-boost converter to achieve robustness against input voltage fluctuations and load changes. In PESC 08 : 39th IEEE Annual Power Electronics Specialists Conference, IEEE, Rhodes, Greece, pp. 2011-2017.
A Positive Buck-Boost converter is a known DC-DC converter which may be controlled to act as Buck or Boost converter with same polarity of the input voltage. This converter has four switching states which include all the switching states of the above mentioned DC-DC converters. In addition there is one switching state which provides a degree of freedom for the positive Buck-Boost converter in comparison to the Buck, Boost, and inverting Buck-Boost converters. In other words the Positive Buck-Boost Converter shows a higher level of flexibility for its inductor current control compared to the other DC-DC converters.
In this paper this extra degree of freedom is utilised to increase the robustness against input voltage fluctuations and load changes. To address this capacity of the positive Buck-Boost converter, two different control strategies are proposed which control the inductor current and output voltage against any fluctuations in input voltage and load changes.
Mathematical analysis for dynamic and steady state conditions are presented in this paper and simulation results verify the proposed method.
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|Item Type:||Conference Paper|
|Keywords:||DC-DC converters, control, dynamics, disturbance|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Industrial Electronics (090603)|
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Circuits and Systems (090601)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Engineering Systems
|Copyright Owner:||© Copyright 2008 IEEE.|
|Copyright Statement:||Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
|Deposited On:||06 Apr 2010 10:15|
|Last Modified:||29 Feb 2012 23:47|
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