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      Design and Simulation of a Steam Turbine Generator using Observer Based and LQR Controllers

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          Abstract

          A steam turbine generator is an electromechanical system which converts heat energy to electrical energy. In this paper, the modelling, design and analysis of a simple steam turbine generator have done using Matlab/Simulink Toolbox. The open loop system have been analyzed to have an efficiency of 76.92 %. Observer based & linear quadratic regulator (LQR) controllers have been designed to improve the generating voltage. A comparison of this two proposed controllers have been done for increasing the performance improvement to generate a 220 DC volt. The simulation result shows that the steam turbine generator with observer based controller has a small percentage overshoot with minimum settling time than the steam turbine generator with LQR controller and the open loop system. Finally, the steam turbine generator with observer based controller shows better improvement in performance than the steam turbine generator with LQR controller.

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          Author and article information

          Journal
          ScienceOpen Preprints
          ScienceOpen
          31 May 2020
          Affiliations
          [1 ] School of Electrical and Computer Engineering
          [2 ] Faculty of Electrical and Computer Engineering
          Article
          10.14293/S2199-1006.1.SOR-.PPESF8J.v1

          This work has been published open access under Creative Commons Attribution License CC BY 4.0 , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com .

          All data generated or analysed during this study are included in this published article (and its supplementary information files).

          Engineering

          Steam turbine, Generator, LQR, Observer based controller, linear quadratic regulator

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