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《Transactions of China Electrotechnical Society》 2013-05
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Harmonic Detection Method Based on Conjugate Signal Parameters via Rotational Invariance Techniques

Cheng Zhiyou1,2 Cheng Chen1 Fu Xuemin1 Wang Jiaqi2(1.Power Quality Engineering Research Center,Ministry of Education Hefei 230601 China 2.Anhui University Hefei 230601 China)  
In this paper,a new algorithm conjugate signal parameters via rotational invariance techniques to estimate the frequency of the harmonics is presented.The C-SPRIT employs all element outputs to form separate sub-arrays which are fully overlapped.It uses the conjugate of rotation matrix instead of rotation matrix in array signal processing.The total least squares(TLS) is also employed here to decrease the influence of noise.The simulation examples demonstrate that the algorithm is capable of having higher precision and stronger anti-noise capacity.Real-time data analysis shows that the algorithm is feasible and available.It has some prospects in future.
【Fund】: 安徽省教育厅科研基金(KJ2008B023);; 安徽大学211人才队伍建设(02203105/05)资助项目
【CateGory Index】: TM711;TN911.7
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