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| Harmonic current detecting method based on modified VSS LMS algorithm |
| School of Electrical and Information Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China） |
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Abstract In order to suppress and compensate the harmonic current effectively to improve the power quality,based on the analysis of universal expression given for the available harmonic current detecting methods,an improved harmonic current detecting method using VSS LMS algorithm was proposed.The parameters of iteration steps were determined to ensure that the selection of parameters had no adverse effect on the algorithm convergence.A variable step-size LMS/LMF algorithm was applied to update the weights,and the step-size was adjusted by means of the normalized autocorrelation estimation of two error signals.The simulation model was established by using Matlab.The method was realized on a TMS320F2812 chip.The results of simulation and experiments show the feasibility and effectiveness of the proposed method
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2010, Vol. 31 
