基于复三阶循环累计量谱的间谐波检测算法  

Interharmonic detection algorithm based on complex third-order cyclic cumulant spectrum

作　　者：代博文 李勋章 樊伟杰 胡新生 DAI Bowen;LI Xunzhang;FAN Weijie;HU Xinsheng(Campus of Qingdao,Naval Aviation University,Qingdao 266041,Shandong China)

机构地区：[1]海军航空大学青岛校区,山东青岛266041

出　　处：《华中科技大学学报(自然科学版)》2025年第3期85-92,共8页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(52101392);山东省自然科学基金资助项目(ZR2021QD060)。

摘　　要：为提高航空地面电源的谐波和间谐波检测精度,提出一种基于复三阶循环累积量谱的多信道并行处理的谐波与间谐波检测算法.首先在正频空间下提出利用复三阶循环累积量谱来估计信号中不同频率分量的傅里叶系数,这能抑制噪声对谐波与间谐波检测结果的影响.其次提出频谱细化的方法以减少频谱泄漏与栅栏效应,实现了傅里叶系数的精准估计.进一步提出多通道并行处理的算法,不仅实现了对宽频信号的估计,还大幅缩减了算法的计算时间.最后通过仿真与实验分析验证了所提算法对航空地面电源的谐波和间谐波检测的实用性.To improve the accuracy of harmonic and interharmonic detection in aviation ground power supply,a multi-channel parallel processing harmonic and interharmonic detection algorithm based on complex third-order cyclic cumulant spectrum was proposed.Firstly,it was proposed to estimate the Fourier coefficients of different frequency components in a signal using a complex third-order cyclic cumulant spectrum in the positive frequency space.Secondly,a method of spectral refinement was proposed to reduce spectral leakage and fence effects,achieving accurate estimation of Fourier coefficients.Further an algorithm for multichannel parallel processing was proposed,which not only achieves estimation of broadband signals,but also greatly reduces the computational time of the algorithm.Finally,the practicality of the proposed algorithm for detecting harmonics and interharmonics in aviation ground power supply was verified through simulation and experimental analysis.

关 键 词：间谐波检测 复三阶循环累积量谱 航空地面电源 傅里叶变换 希尔伯特变换 

分 类 号：TM93[电气工程—电力电子与电力传动]