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《Journal of Beijing Union University(Natural Sciences)》 2007-03
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Universal FFT Algorithm Based on DSP and its Application in Harmonic Detection in Grid

YU Xiao-ming,WU Jie,WANG Shi-wen,ZHANG Yong(College of Electrical Power,South China University of Technology,Guangzhou 510640,China)  
DSP is developing into a mature technology in digital process and digital control,based on which a method of Fast Fourier Transform Algorithm(FFT) is proposed.The algorithm is achieved by assembly language, using the most high-powered processor-TMS320F281x DSP in current control field to carry through the FFT operation of sampling signal,and it can detect all harmonic waves of three-phase voltage and three-phase current in grid,so we can do the harmonic analysis duly.Through the experiment and field work,the precision and high-speed of the algorithm are verified,therefore it can be used as a universal algorithm in harmonic detection.
【Fund】: 国家自然科学基金重点项目(60534040)
【CateGory Index】: TM764
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