PLL yang dirancang merupakan PLL berbasis transformasi dq yang diaplikasikan pada system control inverter terkoneksi mikrogrid. Academic researchers and industrial practitioners will find the results useful for the selection of adaptive observer-based grid-synchronization and sequence extraction techniques.Ībstrak - paper ini membahas mengenai kinerja PLL dalam kondisi jaringan listrik yang terdistorsi. Experimental results demonstrate the merits and demerits of the individual techniques. Following a fair and systematic gain tuning process, the performances are verified through extensive numerical simulation and experiments. The considered techniques are: global adaptive observer, gain normalized adaptive observer, and second-order generalized integrator type adaptive observer. In this paper, a comparative analysis of three recently proposed adaptive observer-based grid-synchronization techniques is presented for frequency estimation and sequence extraction. Adaptive-observer based grid-synchronization techniques are very suitable for this purpose. To make the grid-connected converters resilient to unbalanced and distorted grid, real-time estimation of grid voltage sequences are essential. Various faults and disturbances often make the grid unbalanced and distorted.
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