Adaptive single phase moving average filter PLLs: analysis, design, performance evaluation and comparison

This work analyzes the single-phase Phase Locked Loops using adaptive Moving Average filter and proposes a discrete time tuning procedure, resulting in faster transient response when compared with previous methods, with a good tradeoff between transient (settling time) and steady state (phase ripple) characteristics. An extensive experimental performance evaluation and comparison between the proposed PLL, pPLL and DFAC-pPLL is carried out showing that the proposed PLL presents similar or better performance than more sophisticated ones like DFAC-pPLL.

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W artykule opisano jednofazowy układ PLL z filtrem adaptacyjnym i zaproponowano procedurę strojenia zapewniającą krótszy stan nieustalony i dobre przejście między stanem przejściowym a ustalonym. Porównano eksperymentalnie różne układy PLL, pPLL i DFAC-pPLL.