最终船舶电力系统稳定性研究 毕业论文

江苏科技大学苏州理工学院

20 届毕业设计（论文）

船舶电力系统稳定性研究

系部：电子与信息工程

专业名称：电气工程及其自动化

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二零年六月

江苏科技大学苏州理工学院本科毕业论文

船舶电力系统稳定性研究Research on the Stability of Marine Electric Power System

摘要

船舶是水上航行，海洋开发及国防建设的重要海上交通工具。船舶电力系统作为船舶的灵魂它的稳定性对船舶来说具有特别重要的意义。船舶电力系统与陆地电力系统是存在一定区别的。它是一个典型的独立电力系统，规模较小，但却十分复杂。科学技术日新月异，船舶电力系统容量在不断提高，生产技术在不断进步，船舶电力系统的自动化程度不断发展，除了船舶的电气照明和电力拖动之外，现在船舶大部分使用电力推进装置。船舶采用电力推进装置电能储备量增大。但同时也增加了控制电气的复杂性，所以对船舶电力系统的稳定性研究十分必要。

经过对资料的大量搜集阅读，本文对船舶电力系统稳定性的研究重要性以及国内外研究的现状进行了了解，还简要介绍了船舶电力系统的组成,电力系统稳定性理论，一些稳定性控制方法。然后对船舶电力系统两机并联型数学模型进行了建模与分析。又在建立好的模型的基础上利用反推法设计了自适应控制器，使系统在参数不确定以及外界存在扰动时仍能稳定运行，设计好控制器后采用经典的李雅普诺夫稳定性定理进行了稳定性的证明。最后，为了验证所设计的控制器的控制效果，在MATLAB下进了了系统仿真。仿真主要研究在不加控制器时和加控制器之后，功角δ和功角速度ω两个量的时序图。通过前后两个量的波形对比分析，得出结论，证明控制器可以在系统受到扰动时使系统恢复稳定。

关键词：船舶电力系统；稳定性研究；反推法；自适应控制器

Abstract

Ship is an important maritime transport for watercraft, marine development and national defense building. Ship power system as the soul of the ship, it has special significance for ship. There is a certain difference between ship power system and power system on land. It is a typical independent power system, small in size, but it is very complicated. Science and technology changes with each passing day, the ship power system capacity is rising, the production technology is in progress, ship power system degree of automation continued development, in addition to the ship’s electrical lighting and electric drive, most ship are now using electric propulsion device. Ships using electric propulsion increase power reserve. But at the same time also increased the complexity of the electric control, so it is very necessary to study the stability of ship power system.

After a huge collection of information to be read, in this paper, the importance of ship power system stability studies, as well as on the current situation of domestic and foreign research, also briefly introduces the composition of ship power system, power system stability theory, some stability control method. Then modeling and analysis the nonlinear mathematical model of two generators in parallel of ship power system. And in establishing a good model on the basis of the adaptive controller is designed using back stepping method, make the system in the parameter uncertainty and external disturbance when still can stable operation, good controller is designed after the classical lyapunov stability theorem is used for validation of stability judgment. Finally, in order to verify the control effectiveness of the designed controller, into the procession of system simulation under MATLAB. Simulation research after without controller and the controller, the Angle and angular velocity timing diagram of two quantities. Through two quantities before and after the waveform comparison and analysis, come to the conclusion that time can prove that the controller in the system disturbance when the system restore stability.

Keyword：marine electric power system; stability; back stepping; adaptive control