Title :
A New Harmonic Analyzer Based on Wavelet and Virtual Instrument
Author :
Zhan-Guo, Wang ; Shi Huang-shuang ; Song, Wang
Author_Institution :
Sch. of Electr. Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
A new harmonic analysis equipment based on wavelet transform (WT) and virtual instrument(VI)is generated in the paper, in hope of overcoming the disadvantages of traditional harmonic analysis such as low data processing ability and high-cost . We implemented real-time harmonic analysis for welding machine no-load voltage under this method. Compared with experimental data obtained by FLUKE 43B, this new harmonic analysis method gets the total harmonic distribution (THD) and amplitude of each harmonic content with high accurate. Furthermore, it has low-cost and high real-time performances, and it can be modified easily with the users´ requirements.
Keywords :
power engineering computing; power supply quality; power system harmonics; power system measurement; virtual instrumentation; wavelet transforms; FLUKE 43B; harmonic analyzer; power quality analyzer; real-time harmonic analysis; total harmonic distribution; virtual instrument; wavelet transform; welding machine no-load voltage; Data acquisition; Data processing; Harmonic analysis; Instruments; MATLAB; Power system harmonics; Signal analysis; Signal resolution; Time frequency analysis; Wavelet analysis;
Conference_Titel :
Intelligent Human-Machine Systems and Cybernetics, 2009. IHMSC '09. International Conference on
Conference_Location :
Hangzhou, Zhejiang
Print_ISBN :
978-0-7695-3752-8
DOI :
10.1109/IHMSC.2009.71
