  Steam turbine generator is an electromechanical system which converts heat
energy to electrical energy. In this paper, the modeling, 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. 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.
