基于神经网络的航空三级式起动发电机简化一体化模型
|
摘要
航空三级式无刷同步起动发电机(简称三级式起发电机)因其可靠性高、发电技术成熟等优势而在多电飞机起动发电一体化技术研究中受到青睐。针对该电机的详细分析与起动控制研究需要准确而又高效的仿真模型。针对三级式起发电机多级结构特点,本文将其励磁系统视为具有非线性传递特性的特殊"电刷滑环系统",并通过BP-神经网络拟合获取其传递特性。以励磁系统神经网络简化模型为基础,将包含多级结构的三级式起发电机简化为传统单级式电励磁同步电机,并建立三级式起发电机简化一体化模型。计算机仿真对比分析结果表明,本文所建立的简化一体化模型具有模型简单、仿真精度高、仿真速度快的优势。
Three-stage brushless synchronous starter/generator( TBSSG) is favored in the research about integrated starter/generator technologies in more Electric aircraft for its reliable structure and mature power generation technologies. Detailed analysis and start control for TBSSG need an accurate and efficient simulation model. Considering the multi-stage structure characteristics of TBSSG,the excitation system was regarded as a special "brush slip-ring system"with nonlinear transmission characteristics in this paper,and the nonlinear transmission characteristics was obtained through BP-neural network fitting method. Based on the simplified neural network model of the excitation system,TBSSG with multi-stage structure can be simplified into a traditional electrically excited synchronous machine,and then a simplified integrated model of TBSSG was built. Simulation results verified that the proposed simplified integrated model has the advantages of simple structure,high simulation precision and fast simulation speed.
Three-stage brushless synchronous starter/generator( TBSSG) is favored in the research about integrated starter/generator technologies in more Electric aircraft for its reliable structure and mature power generation technologies. Detailed analysis and start control for TBSSG need an accurate and efficient simulation model. Considering the multi-stage structure characteristics of TBSSG,the excitation system was regarded as a special "brush slip-ring system"with nonlinear transmission characteristics in this paper,and the nonlinear transmission characteristics was obtained through BP-neural network fitting method. Based on the simplified neural network model of the excitation system,TBSSG with multi-stage structure can be simplified into a traditional electrically excited synchronous machine,and then a simplified integrated model of TBSSG was built. Simulation results verified that the proposed simplified integrated model has the advantages of simple structure,high simulation precision and fast simulation speed.
引文
[1]B Sarlioglu,C T Morris.More Electric Aircraft:Review,Challenges,and Opportunities for Commercial Transport Aircraft[J].IEEETransactions on Transportation Electrification,2015,1(1):54-64.
[2]戴卫力,王慧贞,严仰光,等.航空起动/发电系统的发展趋势与研究现状[J].航空科学技术,2010(5):28-32.
[3]张华,刘卫国,等.航空无刷同步起动/发电系统主发电机电感参数计算与分析[J].微电机,2014,47(1):11-16.
[4]N Jiao,W Liu,T Meng,et al.Design and Control of a Two-Phase Brushless Exciter for Aircraft Wound-Rotor Synchronous Starter/Generator in the Starting Mode[J].IEEE Transactions on Power Electronics,2016,31(6):4452-4461.
[5]顾毅康,胡育文.电磁式无刷交流同步发电机的MATLAB/PSB建模[J].航空学报,2002(06):583-586.
[6]N Jiao,W Liu,J Pang,et al.Integrated Model of Brushless Woundrotor Synchronous Starter-generator Based on Improved Parametric Average-Value Model of Rotating Rectifier[J].International Journal of Electrical Power&Energy Systems,2018,96(C):106-113.
[7]V Ruuskanen,M Niemela,et al.Modelling the Brushless Excitation System for a Synchronous Machine[J].Electric Power Applications,IET,2009,3(3):231-239.
[8]M Shahnazari,A Vahedi.Improved Dynamic Average Modelling of Brushless Excitation System in All Rectification Modes[J].IET E-lectric Power Applications,2010,4(8):657-669.
[9]J Jatskevich,S D Pekarek,A Davoudi.Parametric Average-value Model of Synchronous Machine-rectifier Systems[J].IEEE Transactions on Energy Conversion,2006,21(1):9-18.
[2]戴卫力,王慧贞,严仰光,等.航空起动/发电系统的发展趋势与研究现状[J].航空科学技术,2010(5):28-32.
[3]张华,刘卫国,等.航空无刷同步起动/发电系统主发电机电感参数计算与分析[J].微电机,2014,47(1):11-16.
[4]N Jiao,W Liu,T Meng,et al.Design and Control of a Two-Phase Brushless Exciter for Aircraft Wound-Rotor Synchronous Starter/Generator in the Starting Mode[J].IEEE Transactions on Power Electronics,2016,31(6):4452-4461.
[5]顾毅康,胡育文.电磁式无刷交流同步发电机的MATLAB/PSB建模[J].航空学报,2002(06):583-586.
[6]N Jiao,W Liu,J Pang,et al.Integrated Model of Brushless Woundrotor Synchronous Starter-generator Based on Improved Parametric Average-Value Model of Rotating Rectifier[J].International Journal of Electrical Power&Energy Systems,2018,96(C):106-113.
[7]V Ruuskanen,M Niemela,et al.Modelling the Brushless Excitation System for a Synchronous Machine[J].Electric Power Applications,IET,2009,3(3):231-239.
[8]M Shahnazari,A Vahedi.Improved Dynamic Average Modelling of Brushless Excitation System in All Rectification Modes[J].IET E-lectric Power Applications,2010,4(8):657-669.
[9]J Jatskevich,S D Pekarek,A Davoudi.Parametric Average-value Model of Synchronous Machine-rectifier Systems[J].IEEE Transactions on Energy Conversion,2006,21(1):9-18.