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在建立压气机、燃烧室、透平、回热器、转轴转动惯性等单元部件动态模型的基础上,建立了恒转速简单和回热型微型燃气轮机的系统动态模型及其控制系统模型,对其冷启动、升降负荷和甩负荷动态过程进行了动态模拟,并对两者的动态性能进行了对比。结果表明,系统动态模型能够有效地对系统的各个典型动态过程进行模拟与分析,计算稳定可靠,可为微燃机控制系统设计与分析提供模型基础;控制系统设计合理,能够满足调节负荷和转速的要求,保证循环系统安全运行;回热器的热惯性和扰动幅度是影响微燃机系统响应的重要因素。
Based on the dynamic model of unit components such as compressor, combustor, turbine, regenerator and rotating shaft inertia, the system dynamic model and its control system model of constant speed simple and recuperative micro gas turbine are established. Cold start, lift load and load shedding dynamic process of dynamic simulation, and the dynamic performance of the two were compared. The results show that the system dynamic model can effectively simulate and analyze each typical dynamic process of the system, the calculation is stable and reliable, and can provide the model foundation for the design and analysis of the micro-combustion engine control system. The control system is designed rationally to meet the requirements of load and speed regulation Of the requirements to ensure the safe operation of the circulatory system; regenerator thermal inertia and disturbance amplitude is an important factor affecting the response of the micro-gas turbine system.