TY - GEN
T1 - Design-Oriented Dissipativity Enhancement for Single-Loop Voltage Control of Grid-Forming VSCs
AU - He, Shan
AU - Blaabjerg, Frede
PY - 2023/6
Y1 - 2023/6
N2 - In light of harmonic stability caused by the control delay and the wide-varied grid impedance, grid-side current feedforward is an effective method to enhance the dissipativity for voltage control of grid-forming converters. However, the dissipative characteristic of converter output impedance is seriously affected by the designed LC-filter resonance frequency and the filter parameters deviation. To fill this gap, a design-oriented control scheme is proposed using three variables feedforward, i.e., converter-side current, capacitor current, and capacitor voltage. As a result, not only the dissipativity can be achieved below Nyquist frequency, but also the dissipativity robustness against the LC-filter parameter deviation is enhanced. Besides, the LC-filter resonance frequency can be designed freely without considering the critical frequency. Finally, the proposed method is validated through the simulation.
AB - In light of harmonic stability caused by the control delay and the wide-varied grid impedance, grid-side current feedforward is an effective method to enhance the dissipativity for voltage control of grid-forming converters. However, the dissipative characteristic of converter output impedance is seriously affected by the designed LC-filter resonance frequency and the filter parameters deviation. To fill this gap, a design-oriented control scheme is proposed using three variables feedforward, i.e., converter-side current, capacitor current, and capacitor voltage. As a result, not only the dissipativity can be achieved below Nyquist frequency, but also the dissipativity robustness against the LC-filter parameter deviation is enhanced. Besides, the LC-filter resonance frequency can be designed freely without considering the critical frequency. Finally, the proposed method is validated through the simulation.
KW - Grid-forming converters
KW - LC-filter parameter deviation
KW - LC-filter resonance frequency design
KW - dissipation
KW - voltage control
UR - http://www.scopus.com/inward/record.url?scp=85171581462&partnerID=8YFLogxK
U2 - 10.1109/CPE-POWERENG58103.2023.10227477
DO - 10.1109/CPE-POWERENG58103.2023.10227477
M3 - Article in proceeding
SN - 979-8-3503-0005-5
T3 - International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG). Proceedings.
SP - 1
EP - 6
BT - Proceedings of the 2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
PB - IEEE
T2 - 2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
Y2 - 14 June 2023 through 16 June 2023
ER -