多级式航空无刷同步起动/发电系统起动机理及起动转矩平滑控制研究

项目名称： 多级式航空无刷同步起动/发电系统起动机理及起动转矩平滑控制研究

项目编号： No.51277152

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 电工技术

项目作者： 刘卫国

作者单位： 西北工业大学

项目金额： 76万元

中文摘要： 我国飞机广泛应用的多级式航空无刷同步发电机均无起动航空发动机的功能，开展该类发电机的电动起动特性研究日益受到关注。在励磁机单相交流励磁模式下，主发电机励磁电流脉动、与励磁机电磁和机械耦合严重，基于单一电动机模型的传统起动控制方法会导致电机转矩脉动大，发动机起动困难。本项目拟在综合发电机多级结构机电耦合的基础上，探讨系统耦合关系机理，研究主发电机励磁电流脉动分量对气隙磁链、转矩脉动的影响，获取起动动态过程中非恒定电流励磁与主发电机转矩脉动之间的关系特性；研究集励磁机、旋转整流器和主发电机为一体的多输入多输出非线性状态空间变量，建立无刷同步起动/发电系统起动过程一体化模型，并据此构建自适应反演气隙磁链和转矩观测器，开展非恒定磁场下起动/发电系统直接瞬时转矩控制研究。所提出的一体化模型和控制方法对理解多级式无刷同步起动/发电系统内在机电耦合关系提供理论参考，为实现系统平滑起动控制提供应用依据。

中文关键词： 航空起动/发电系统；电压转矩闭环控制；两相励磁机；一体化建模；转子初始位置检测

英文摘要： Multi-stage aviation brushless synchronous generators, wich widely used in airplanes of our country, have no function of starting aircraft engines. So developing start ability of these generators is absorbing great concern. When the exciter stator is fed with single phase AC voltage, the excitation current of the main generator contains pulsating components, and the electromagnetic and mechanical coupling between the main generator and exciter is serious. The adoption of traditional control method based on single motor model for starting control will lead to the motor torque with larger ripple, and make the start of the aircraft engine difficult. This research intends to explore the mechanism of the system coupling relationship based on the combine of multi-stage structure and electromechanical coupling of the generator, and analyze the influence of the main generator excitation current pulse component to the air-gap flux and torque ripple, then obtain the relationship of the unstable current excitation and torque ripple in the starting dynamic process; research multi-input multi-output nonlinear state space variables considering the integration of exciter, rotating rectifier and main generator, and build a integration model of the brushless synchronous starter/generator in start-up period, then design an adapt

英文关键词： Aviation starter/generator system；Voltage torque closed-loop control；Two-phase brushless exciter；Integrated model；Rotor initial position estimation