FRT Capability of Grid-Forming Power Converters: an Anti-Windup Scheme
Journal article, 2024

Fault ride-through requirements by grid codes necessitate grid-forming (GFM) power converters to operate stably during large grid disturbances such as voltage dips, voltage phase jumps, and rapid frequency changes. Nevertheless, the limited overcurrent capability of power converters deteriorates the transient synchronization stability during faults. To this end, this paper suggests an anti wind-up (AW) scheme from the hard current limiter block toward the active power loops (APL). In this way, the outer APL can recognize that the converter is in the saturated mode and that reference power exceeds the power limit injection that grid conditions allow; and therefore, the control effort should be modified in accordance with the allowable capacity. The proposed mechanism is first explained by presenting phase-portrait analysis through a nonlinear complex phasor model of the system; it is then shown a good correlation between the phasor domain and time domain findings. Finally, the effectiveness of the proposed method is shown through EMT simulations and experimental results.

Grid-forming control

Transient stability

Impedance

Transient analysis

Voltage control

Power system stability

Fault ride-through

Synchronization

Loss of synchronization

Voltage measurement

Large signal analysis

Grid forming

Author

Yousef Khayat

Chalmers, Electrical Engineering, Electric Power Engineering

Peiyuan Chen

Chalmers, Electrical Engineering, Electric Power Engineering

Massimo Bongiorno

Chalmers, Electrical Engineering, Electric Power Engineering

Bengt Johansson

Chalmers, Mechanics and Maritime Sciences (M2), Combustion and Propulsion Systems

Ritwik Majumder

Epiroc

IEEE Transactions on Power Electronics

0885-8993 (ISSN) 19410107 (eISSN)

Vol. 39 10 12842-12855

Fault-Ride-Through of Wind Power Plant with Grid-Forming Control

Swedish Energy Agency (52651-1), 2021-12-15 -- 2024-12-31.

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TPEL.2024.3424539

More information

Latest update

9/14/2024