Damping control of high‐frequency resonance based on voltage feedforward for voltage source converter under a parallel compensated grid. Issue 13 (1st October 2020)

• Record Type: Journal Article
• Authors: Pang, Bo; Nian, Heng; Wu, Chao; Blaabjerg, Frede
• Is Part Of: IET power electronics. Volume 13:Issue 13(2020)
• Page Start: 2682
• Page End: 2691
• Publication Date: 2020-10-01
• Subjects: voltage control -- power system stability -- power system control -- power grids -- feedforward -- power convertors -- damping -- compensation; VSC system -- frequency detection -- high‐frequency noise -- damping control strategy -- high‐frequency resonance -- voltage source converter -- parallel compensated grid -- interconnected system -- high‐frequency voltage component -- HFR damping strategy -- voltage feedforward control; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2019.1387
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : When a voltage source converter (VSC) connects to a parallel compensated grid, high‐frequency resonance (HFR) is a subsistent issue that exists in the interconnected system. HFR will introduce a significantly high‐frequency voltage component at the point of common coupling, thereby the performance of the VSC system can be deteriorated seriously. For improving the operation of the VSC system under the parallel compensated grid, this study proposes an HFR damping strategy based on a voltage feedforward control to reshape the impedance of grid connected VSC. The VSC system with the proposed control strategy can damp HFR in a wide high‐frequency range without employing the frequency detection and introducing the differential elements so that the negative influence caused by the high‐frequency noise can be avoided. Theoretical analysis and experimental results are given to verify the effectiveness and availability of the proposed damping control strategy.