Accurate and Less-Disturbing Active Antiislanding Method Based on PLL for Grid-Connected Converters

  title={Accurate and Less-Disturbing Active Antiislanding Method Based on PLL for Grid-Connected Converters},
  author={Mihai Ciobotaru and Vassilios G. Agelidis and Remus Teodorescu and Frede Blaabjerg},
  journal={IEEE Transactions on Power Electronics},
An accurate and less-disturbing active antiislanding method suitable for grid-connected converters using phase-locked loop (PLL) based grid synchronization is proposed in this paper. The orthogonal signal generator required by a single-phase PLL is built using a second-order generalized integrator. The inverter current reference is slightly modified each output cycle by an injected signal, and a feedback signal is extracted from the voltage of the point of common coupling (PCC). When the grid… CONTINUE READING
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