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segunda-feira, 29 de dezembro de 2014
Harmonics and Inter-harmonics Estimation of Power Signal using Filter Banks LIN YOUNG BIN DEPARTMENT OF ELECTRICAL ENGINEERING CHUNGBK NATIONAL UNIVERSITY KOREA
ABSTRACT This paper proposes a new method which combines filter bank system and adaptive filtering for the parameters estimation of the harmonics and the inter-harmonics of power signals. The proposed method decomposes the input power signal by designing the filter bank system. This filter bank has binary tree structure, and uses the fundamental filter banks successively in each decomposing stage. The fundamental filter bank separates the odd harmonic and the even harmonic components to reduce the spectral leakage. The adaptive filter is applied to the each harmonic component for the accurate parameter estimation. And the inter-harmonic component parameters are estimated through the error signal of the adaptive filter. The amplitudes and the frequency estimation of the each harmonic and inter-harmonic are carried out by the recursive method. To demonstrate the performance of the method, computer simulations are performed to the synthesized signals.
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