A New PLL Simulation Validation for Three-phase Grid under Heavy Distorted Conditions
DOI:
https://doi.org/10.3991/ijoe.v11i7.4765Keywords:
Phase-locked loop, Positive sequence, Synchronous reference frameAbstract
The precision of phase-locked loop (PLL) has a direct effect on the output performance for three-phase grid-connected inverter or three-phase active PFC. In this paper, a new three-phase digital closed-loop phase-locked algorithm is proposed on the basis of synchronous reference frame transformation. Synchronous simulation of the PLL techniques is a good choice even if the polluted three-phase grid such as the harmonics, phase jump and unbalance. Finally, MATLAB digital simulation results prove that the proposed PLL can fast and accurately track the positive sequence fundamental components of three-phase grid voltage.
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