Performance of grid-voltage synchronization algorithms based on frequency-and phase-locked loop during severe grid fault conditions

摘要: Since the beginning of twenty first century, Renewable energy resources have been developing into fuel choice to handle upcoming electricity demand around world. To implement renewable resources, Microgrid-a localized group sources and loads-is considered as most suitable option shift over conventional utility grid due a number advantages. In case grid-tied microgrid application, voltage synchronization is required experience desirable performance. This paper evaluates performance two leading comprehensive algorithm, Decoupled Double Synchronous Reference Frame PLL (DDSRF-PLL) Second-order Generalized Integrator FLL (DSOGI-FLL) under adverse fault conditions. Results show that their does not obey modern codes during harmonic-polluted situation. An advanced decoupled multiple (DMSRF-PLL) build on SRF-PLL, might exhibit accurate when contains harmonic distortion.