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This paper proposes a robust estimation technique of the real-time single-phase grid voltage fundamental frequency under distorted conditions. The proposed technique consists of a demodulation method and a finite-impulse-response based differentiation filter. A frequency domain analysis is presented for designing the differentiation filter relying on a modulating function strategy. The differentiation...
This paper proposes a real-time estimation technique of the single-phase grid voltage fundamental frequency under distorted conditions. The proposed technique relies on a modulating function and an algorithm based on three consecutive samples. The frequency estimation technique is relatively simple, robust and capable of providing accurate estimation of time-varying fundamental frequency from a single-phase...
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