Abstract:
Phase-locked loop (PLL) introduces the negative resistance that leads to sideband oscillation, which compromises system stability in weak grids. This paper aims to reveal...Show MoreMetadata
Abstract:
Phase-locked loop (PLL) introduces the negative resistance that leads to sideband oscillation, which compromises system stability in weak grids. This paper aims to reveal the mechanism of system instability caused by the PLL from the point view of equivalent impedance. To enhance the system stability, a designed-oriented analysis is carried out and a active damping control strategy based on digital filters is proposed by eliminating the adverse effect of PLL. Moreover, the detailed control schemes and parameter design of the active damping control strategy are discussed. Finally, the effectiveness of the proposed control strategy is verified by the simulation results.
Published in: 2023 8th IEEE Workshop on the Electronic Grid (eGRID)
Date of Conference: 16-18 October 2023
Date Added to IEEE Xplore: 09 January 2024
ISBN Information: