Influence of PLL in wind parks harmonic emissions

This work presents an analysis of four topologies of Phase Locked Loop-PLL, applied in wind power inverters. The SRF-PLL, DDSRF-PLL, DSOGI-PLL and a MATLAB/Simulink PLL model are compared when there are harmonics in the point of common coupling (PCC). The simulations represent a wind farm with one synchronous generator of 1.5 MW using full converters. The results show that the harmonic produced by the wind farm depends on the PLL model used.