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随着全球经济的迅速发展,环境污染与能源危机的挑战日益严峻。沼气是一种非常有用且清洁的可再生能源,而微型燃气轮机也具有很好的发展前景。国内外很多文献对沼气和微型燃气轮机做了大量的研究,但都没有将两者很好地结合起来。本文试图将沼气用于燃烧天然气的微燃气轮机。先简介沼气微燃气轮机发电系统,以微型燃气轮机作为研究对象,以模块化建模方法建立起沼气微燃气轮机中各物理部件的数学模型,在设计不同空燃比下推算燃烧室出口燃气化学成分的比例,然后,运用Simulink软件,建立了沼气微燃气轮机仿真模型,将微燃气轮机的沼气发电的变工况进行了仿真。结果与实际基本相符。论证了仿真模型的正确性以及利用Simulink进行微燃气轮机建模与仿真的有效性。因此本文的研究为微燃气轮机和沼气发电系统的研究和应用提供了一种重要的方法。
With the rapid development of the global economy, the challenges of environmental pollution and energy crisis are becoming more and more serious. Biogas is a very useful and clean renewable energy source, and micro-gas turbines also have very good development prospects. Many domestic and foreign literatures have done a lot of research on biogas and micro-gas turbines, but none of them well combine the two. This article attempts to use biogas for a micro gas turbine that burns natural gas. Firstly, the biogas micro gas turbine power generation system is briefly introduced. Taking the micro gas turbine as the research object, the mathematical model of each physical part in the biogas micro gas turbine is established by the modular modeling method. The proportions of the gas chemical components at the exit of the combustion chamber are calculated under different air- Then, with Simulink software, a biogas micro gas turbine simulation model is established to simulate the changing conditions of biogas power generation of micro gas turbines. The result is basically in line with the actual situation. The correctness of the simulation model and the validity of Simulink for micro gas turbine modeling and simulation are demonstrated. Therefore, the research in this paper provides an important method for the research and application of micro gas turbine and biogas power generation system.