基于二端口理论的航空三级式起动/发电机宽频阻抗模型研究  

Two-port Theory Based Wide Frequency Impedance Modeling Method for Aircraft Three-stage Starter/Generator

作　　者：赵丹[1] 申科[1] 刘卫国[1] 毛帅 郎朗 ZHAO Dan;SHEN Ke;LIU Weiguo;MAO Shuai;LANG Lang(School of Automation,Northwestern Polytechnical University,Xi'an 710072,Shaanxi Province,China;School of Vehicle and Mobility,Tsinghua University,Haidian District,Beijing 100084,China)

机构地区：[1]西北工业大学自动化学院,陕西省西安市710072 [2]清华大学车辆与运载学院,北京市海淀区100084

出　　处：《中国电机工程学报》2021年第22期7841-7849,共9页Proceedings of the CSEE

基　　金：国家自然科学基金(面上基金项目)(51677152);陕西省重点研发计划项目(2020GY-116)。

摘　　要：航空三级式起动/发电机是一个包含多干扰源的复杂系统,建立综合考虑定/转子阻抗耦合信息的电机阻抗模型是深入分析电磁干扰传递机理的关键。该文提出一种考虑定子阻抗、转子阻抗及定/转子耦合效应的宽频集总参数通用模型。该模型将电机视为一个多端口网络"黑盒",进而采用Z参数矩阵描述电机的频域阻抗特性,并给出参数的具体测量方法和计算方法。该文通过推导忽略定/转子耦合的阻抗误差表达式,以获得三级式电机模型的简化条件,进而提出基于误差评估的宽频通用电路模型,并采用矢量匹配技术实现电路模型的参数化。实际测试结果表明,该模型具有精度高、复杂度低和通用性强的特点。所提出的建模方法能为三级式起动/发电机的EMI研究提供有力保证。The impedance modeling of the aircraft three-stage starter/generator is very crucial for conduct EMI analysis, and multi-EMI sources are included in this system. In this paper, a universal wide frequency equivalent circuit model was proposed which considers the stator impedance, rotor impedance and the mutual coupling effect comprehensively. A ‘black box’ model based multi-port network theory was applied to replace the machine, thus the Z matrix could be used to describe the frequency character of the machine. The extraction and calculation processes were also discussed in this paper. The theoretical impedance error caused by the coupling neglecting was deduced, then a general wide frequency circuit model was presented. The circuit model was parameterized based on vector fitting technique. The proposed method could be used for EMI analysis of the aircraft three-stage starter/generator,and it had the advantages of high precision, low complexity,more flexible.

关 键 词：航空三级式起动/发电机 电磁干扰 多端口网络 定/转子阻抗耦合 宽频等效电路 

分 类 号：TM341[电气工程—电机]