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

**Authors:** Mustefa Jibril, Messay Tadese, Eliyas Alemayehu Tadese  
**arXiv:** [2009.06714](https://arxiv.org/abs/2009.06714)  
**Date:** 2020-08-29  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/2009.06714v1/

## Key points

- Modeling, design, and analysis of a steam turbine generator using Matlab/Simulink Toolbox
- Initial analysis shows open-loop system efficiency of 76.92%
- Two controllers proposed: observer-based controller and linear quadratic regulator (LQR) controller
- Comparison between controllers to identify better performance improvement for generating a 220 DC volt output
- Simulation results show observer-based controller has smaller percentage overshoot and minimum settling time compared to LQR controller and open-loop system
- Observer-based controller demonstrates superior performance improvement compared to LQR controller
- Research provides insights into improving steam turbine generator performance through advanced control strategies
- Importance of utilizing observer-based controllers for better efficiency and voltage generation in steam turbine systems

## Summary

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

Authors: Mustefa Jibril, Messay Tadese, Eliyas Alemayehu Tadese

Affiliations1. School of Electrical & Computer Engineering, Dire Dawa Institute of Technology, Dire Dawa, Ethiopia
2. School of Electrical & Computer Engineering, Dire Dawa Institute of Technology, Dire Dawa, Ethiopia
3. Faculty of Electrical & Computer Engineering, Jimma Institute of Technology, Jimma, Ethiopia

Email: mustefazinet1981@gmail.com

AbstractThe paper presents the modeling , design , and analysis of a simple steam turbine generator using Matlab/Simulink Toolbox. The objective is to convert heat energy into electrical energy efficiently. The open-loop system is initially analyzed and found to have an efficiency of 76.92%. To improve the generating voltage and overall performance , observer-based and linear quadratic regulator (LQR) controllers are designed and compared. SummarySteam turbine generators play a crucial role in converting heat energy into electrical energy in various applications. In this study conducted by Mustefa Jibril et al., the authors focus on the modeling , design , and analysis of a steam turbine generator using Matlab/Simulink Toolbox. The initial analysis involves studying the open-loop system's efficiency which is determined to be 76.92%. To enhance the generating voltage and overall performance , two different controllers are proposed: observer-based controller and linear quadratic regulator (LQR) controller. The comparison between these two controllers aims to identify which one provides better performance improvement for generating a 220 DC volt output. Through simulation results obtained from Matlab/Simulink Toolbox experiments, it is observed that the steam turbine generator with an observer-based controller exhibits a smaller percentage overshoot with minimum settling time compared to both the LQR controller and the open-loop system. The findings of the study indicate that the steam turbine generator with an observer-based controller demonstrates superior performance improvement compared to the LQR controller. This suggests that the observer-based controller is more effective in enhancing the generating voltage and overall efficiency of the steam turbine generator. In conclusion, this research provides valuable insights into improving the performance of steam turbine generators through the implementation of advanced control strategies. The results highlight the significance of utilizing observer-based controllers for achieving better efficiency and voltage generation in steam turbine systems. Further studies can be conducted to explore additional control techniques and optimize various parameters for even greater performance enhancement.