Özdemir A.Taştan M.2024-07-222024-07-2220141024123Xhttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/16922Studies on the PLL (phase locked loop) based interharmonic measurements have been considerably increased recently. The method proposed in this study is a hybrid method based on the frequency analysis. The proposed method presents solutions for the leading problems about the interharmonic measurement, such as fundamental frequency shifting, spectral leakage, and picket-fence effect, using digital PLL and adaptive notch filter. In addition, a new approach is presented to solve the multizero crossing problem encountered in the analysis of the harmonic-interharmonic. Both simulative and field data tests have been performed to verify the effectiveness of the proposed method. © 2014 Ayhan Özdemir and Mehmet Taştan.EnglishAll Open Access; Gold Open Access; Green Open AccessAdaptive filtersAdaptive notch filtersDigital adaptive filtersFrequency AnalysisFundamental frequenciesHybrid methodInter-harmonicsNew approachesSpectral leakageHarmonic analysisArticle10.1155/2014/501781