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This paper presents development and implementation of a novel digital signal processing algorithm for on-line estimation of the fundamental frequency of non-sinusoidal power system signal. The algorithm relies on stable band-pass second degree digital integrator (BPSDDI) based rigorous mathematical deduction and recombines itself with zero-crossing avoiding technique. The proposed algorithm provides...
This study presents development and implementation of a novel digital signal processing algorithm for on-line estimation of the fundamental frequency of non-sinusoidal power system signals. The basic algorithm relies on the development of a new variance reduction algorithm and design of an optimised infinite impulse response (IIR) second-degree digital differentiator (SDDD). The design of SDDD consists...
An innovative, computationally efficient digital signal processing algorithm has been proposed to evaluate the fundamental frequency of a non-sinusoidal power system signal at every sample instant. This approach adopts backward difference approximation as second derivative FIR filter to estimate the instantaneous frequency. Besides this, an efficient square root algorithm, based on iterative Newton-Raphson...
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