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《Transactions of China Electrotechnical Society》 2012-10
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Real-Time Frequency Estimation of Aircraft Power Source Based on 3-Line DFT

Xiao Kun Wang Lina M.Khurram Shahzad(Beihang University Beijing 100191 China)  
A real-time frequency estimation algorithm based on 3-line discrete Fourier transform(DFT) is presented in this article for variable frequency measurement in aircraft power system.The signal is firstly weighed by means of Hanning window,and the spectrum amplitude in main lobe area is calculated via DFT.The numerical value relation between fundamental frequency and 3-spectrum amplitude is then derived.According to the features of power system,the number of samples in the algorithm is determined,which has no main lobe spectrum leakage.The spectrum amplitude is extracted in rotating reference frame to effectively reduce the computation effort.Iterative calculation of initial frequency is introduced to perform continuously long-range frequency estimation with no fence effect.Simulation and experimental results show that the proposed technique can simultaneously track the frequency with fast step response and high steady-state accuracy.
【Fund】: 国家自然科学基金(50807002);; 航空科学基金(2008ZC51045)资助项目
【CateGory Index】: TM935.1
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 Ding Yifeng1 Cheng Haozhong1 Lü Ganyun1 Zhan Yong1 Sun Yibin2 Lu Rong2 (1.Shanghai Jiaotong University Shanghai 200030 China 2.Shanghai Urban Power Supply Company Shanghai 200080 China);Spectrum Estimation of Harmonics and Interharmonics Based on Prony Algorithm[J];Transactions of China Electrotechnical Society;2005-10
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 ZHANG Yiling1,2,GAO Cunbo1,LIU Mingguang2(1.Shanxi Shuozhou Electric Power Supply Company,Shanxi Shuozhou 036002,China;2.School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China);An extended prony algorithm in power transmission lines fault localization[J];Journal of Beijing Jiaotong University;2012-02
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4 LI Xin1,LIU Jie1,CHEN Wen-li2(1.State Key Laboratory of Power Transmission Equipment & System Security and NewTechnology,Chongqing University,Chongqing 400044,China.2.Chongqing Electric Power Research Institute,Chongqing 401123,China.);Interharmonics Estimation Based on Root-MUSIC and SVM Algorithm[J];Electrical Measurement & Instrumentation;2012-06
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Chinese Journal Full-text Database 10 Hits
1 HU Wei-bing1,2,LI Kai-cheng1 (1.Electric Power Security and High Efficiency Lab,Huazhong University of Science and Technology,Wuhan 430074,China;2.College of Electrical Information Engineering,Wuhan Institute of Technology,Wuhan 430073,China);Comparison and study on real-time phase synchronization methods[J];Electrical Measurement & Instrumentation;2007-08
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8 WANG Yang, WANG Ning-hui (Department of Electrical Appliances and Applied Electronics, Dalian University of Technology, Dalian 116023, China);STUDY ON ANALYZING ELECTROSTATIC PRECIPITATOR DISCHARGE SIGNAL BASED ON THE PRONY METHOD[J];Proceedings of the Csee;2003-01
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