[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 多电飞机270 V高压直流电力系统小信号稳定性分析-Small Signal Stability Analysis of Multi-Electric Aircraft with 270 V HVDC Power System
文章摘要
刘勇智,聂恺,于锦禄,陈俊柏.多电飞机270 V高压直流电力系统小信号稳定性分析[J].空军工程大学学报:自然科学版,2021,22(4):35-40
多电飞机270 V高压直流电力系统小信号稳定性分析
Small Signal Stability Analysis of Multi-Electric Aircraft with 270 V HVDC Power System
  
DOI:
中文关键词: 飞机电力系统  小扰动  稳定性分析  参与因子
英文关键词: aircraft power system  small fluctuations  stability analysis  participation factor
基金项目:国家自然科学基金(51776223)
作者单位
刘勇智,聂恺,于锦禄,陈俊柏 1.空军工程大学航空工程学院 西安 710038 2.空军工程大学研究生院 西安 710051 
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中文摘要:
      针对多电飞机电力系统直流侧滤波器等参数对应系统的稳定域难以确定、参数主要参与因子选取困难的问题,提出了基于特征值参与因子的方法,用dq变换法对飞机电力系统进行等效变换,据此建立系统的数学模型;使用泰勒一阶变换对模型进行处理得到小信号模型;通过特征值法对整个系统的稳定性进行分析。并通过其参与因子得到参数变化时稳定性变化趋势,确定系统稳定边界,预测不稳定点的位置。通过Matlab/Simulink建立系统仿真模型并进行仿真分析,结果表明,运用参与因子对电力系统进行稳定性分析,可以大幅缩短选取主导参数的时间,清晰、快速地显示了不同主导参数下系统的稳定域与失稳点。
英文摘要:
      Aimed at the problems that the stability region of the system corresponding to parameters such as DC side filter is difficult to determine and select the main factors of parameters in the multi electric aircraft power system, and the main parameter participating factors and the long stability time are also difficult to select, a method based on eigenvalue participating factors is proposed. dq transformation method is used to carry out the equivalent transformation of the aircraft power system, and its mathematical model is established. Taylor series is used to linearize the small signal, and a linear small signal analysis model of its dynamic characteristics is obtained. And then, the eigenvalue method is used to analyze the stability of the system, and the change trend of the stability when the parameters change is obtained through its participation and participation factors, determining the stability boundary of the system and predict the position of the unstable point. Through Matlab/Simulink, the system simulation model is established and the simulation analysis is carried out. The results show that the stability analysis of the power system by using the participation factor could significantly shorten the time to select the dominant parameters, clearly and 〖JP2〗quickly display the stability domain and instability point of the system under different dominant parameters.
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