A Control Method for Surge Prevention Under Load Disturbances in Closed Brayton Cycle TAC System

Haosen Liu, Yuxuan Sun, Qingqing Fang, Fangnan Huang, Jun Yu, Xiangrong Tang and Qian Ning ()
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Haosen Liu: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Yuxuan Sun: College of Chemistry, Sichuan University, Chengdu 610065, China
Qingqing Fang: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Fangnan Huang: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Jun Yu: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Xiangrong Tang: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Qian Ning: College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China

Energies, 2025, vol. 18, issue 17, 1-26

Abstract: In closed Brayton cycle power generation systems, sudden load disturbances can induce a compressor surge in turbine–alternator–compressor systems, posing significant risks to dynamic stability and operational reliability. To address this challenge, this study proposes a PID control strategy optimized via a genetic algorithm. A high-fidelity dynamic model of the turbine–alternator–compressor system under closed Brayton cycle conditions is developed in Simulink, incorporating surge boundaries derived from performance maps. Control parameters are tuned using a weighted multi-objective fitness function that integrates overshoot, rise time, and the integral of absolute error. Simulation results demonstrate that the proposed control scheme markedly enhances system responsiveness—achieving approximately a 70% improvement in rotational speed regulation—and effectively maintains the operating point outside the surge region. The proposed framework provides a practical and robust approach for improving the dynamic stability and reliability of closed Brayton cycle power generation systems.

Keywords: closed Brayton cycle; TAC system; Simulink; surge prevention; PID; genetic algorithm (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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