Optimal Control of AVR System With Tree Seed Algorithm-Based PID Controller

• Published in: IEEE access Vol. 8; pp. 89457 - 89467
• Main Author: Kose, Ercan
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Automatic voltage control; Automatic voltage regulator; bode analysis; Control systems; Controllers; disturbance analysis; Generators; Optimal control; Optimization; PID controller; Proportional integral derivative; Robustness; Root locus; Tracking control; Tracking problem; Transfer functions; transient response; tree-seed algorithm; Voltage regulators; Voltage stability
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2020.2993628

In this study, an optimal Tree-Seed Algorithm (TSA) algorithm-based Proportional-Integral-Derivative (PID) controller is proposed for automatic voltage regulator (AVR) system terminal tracking problem. PID controller gains <inline-formula> <tex-math notation="LaTeX">K\text{p} </tex-math></inline-formula>, <inline-formula> <tex-math notation="LaTeX">K\text{i} </tex-math></inline-formula>, and <inline-formula> <tex-math notation="LaTeX">K\text{d} </tex-math></inline-formula> are optimized with the proposed TSA algorithm based on different objective functions. The TSA-based optimal PID controller's performance is compared with numerous PID controllers, which were developed using different meta-hermetic optimization algorithms in the literature. Several analysis methods including root locus, bode analysis, robustness, and disturbance rejection are studied and compared with reported works in the literature. It is shown that there is still a research gap to improve the tracking performance of the AVR system due to its importance in electrical systems. According to the obtained comparison results, it has been revealed that the proposed TSA-based PID controller improves tracking properties under load change thus it can be effectively used for synchronous generator automatic voltage regulator terminal voltage stability.