航空发电机健康特征参数与老化模式分析  

Analysis on Health Characteristic Parameters and Aging Mode of Aerospace Generator

作　　者：汤孝 高朝晖[1] 郗展 王爽[1] Tang Xiao;Gao Zhaohui;Xi Zhan;Wang Shuang(Northwestern Polytechnical University,Xi’an 710129,China)

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《航空科学技术》2021年第6期27-35,共9页Aeronautical Science & Technology

基　　金：西北工业大学硕士研究生创意创新种子基金(CX2020022)。

摘　　要：航空三级式无刷发电机中旋转整流器整流二极管的老化是发电机外特性退化的重要来源。本文选择二极管正向导通压降的变化作为其主要老化模式,对二极管老化和发电机外部特性参数间的关联性进行研究。采用Saber软件搭建航空发电机老化模型,利用蒙特卡罗仿真功能,获取大量发电机外部特性参数数据,从中筛选出与旋转整流器二极管老化状态存在较强关联性的健康特征参数,用来表征发电机的健康状态。本文还分析了不同工况条件对发电机健康特征参数与二极管老化关联性的影响,表明在比较健康状态参数变化时需保持相同的发电机工况。The aging of the rectifier diodes in the rotating rectifier is an important cause for the degradation in the aerospace three-stage brushless generator. In this study, changes in the forward voltage value of the diodes are selected as the main aging mode, and the correlation between diodes aging and external parameters is studied. The aging model of the generator is built in Saber, and the Monte Carlo simulation is used to produce a large amount of external parameters data-set of the generator. The external characteristic parameters strongly correlated with aging status of the diodes are extracted from the data-set, which represent the generator’s health status. The study also analyzes the influence of different operating conditions on the correlation between the characteristic parameters and the aging of diodes, which indicates that generator operating conditions need to be kept the same when comparing changes in characteristic parameters.

关 键 词：健康管理 航空发电机 二极管老化 蒙特卡罗仿真 Pearson相关系数 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置] TM34[自动化与计算机技术—控制科学与工程]