摘要
随着多电与全电飞机的大量应用,对航空静止变流器(ASI)的功率容量提出了更高的要求,也越来越多地采用模块化串、并联方式实现功率扩容,并结合载波移相调制进一步降低系统的开关频率谐波成分。但是在机载场合组合模块间的参数不平衡,以及基于模拟电路的控制方式,致使控制信号中易叠加额外低频或直流偏置扰动,导致ASI输入、输出侧叠加额外的谐波成分,对航空电源系统运行的稳定性与可靠性造成影响。该文基于桥臂输出电压谐波分布模型,采用双重傅里叶分析与指数函数分析相结合的方法,在考虑扰动分量这一非理想条件下,对模块化载波移相串、并联ASI的输入、输出谐波分布进行分析与比较,揭示了模块化组合式ASI的谐波分布特性。最后通过仿真和实验验证了理论分析的正确性。
With the larger scale application of multi-electric and all-electric aircraft,higher requirements are put forward on the power capacity of aeronautical static inverter(ASI),and more power expansion is realized by modular series and parallel methods.The expansion mode combined with carrier phase shift modulation can further reduce the switching frequency harmonic components of the system.However,the parameter imbalance between the modular modules on the airborne occasion and the control mode based on the analog circuit cause additional low frequency or DC offset disturbances in control signals,resulting in superimposing unconventional harmonic components on the input and output sides of the ASI.In this paper,based on the double-Fourier analysis and exponential function model of bridge voltage,the input and output harmonic distributions of modular series and parallel ASI are performed under non-ideal conditions.Analysis and comparison reveal the harmonic distribution characteristics of the modular ASI.Finally,the correctness of theoretical analysis is verified by simulation and experiment.
作者
陈轶涵
郭鸿浩
陈家伟
Chen Yihan;Guo Honghao;Chen Jiawei(College of Automation&AI Nanjing University of Posts&Telecommunications,Nanjing 210023 China;College of Automation Engineering Chongqing University Chongqing,400044 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2020年第8期1690-1704,共15页
Transactions of China Electrotechnical Society
基金
江苏省自然科学基金青年项目(BK20160894)
中央高校基本科研业务费项目(2018CDQYZDH0039)资助。
关键词
交错并联
级联逆变器
双重傅里叶分析
谐波分布
Interleaving parallel
cascaded inverter
double-Fourier analysis
harmonic distribution
