External Inertia Emulation to Facilitate Active-Power Limitation in Grid-Forming Converters
Journal article, 2024
The aim of this paper is to present a grid-forming (GFM) control strategy with a novel active-power loop (APL) structure facilitating limitation of active power while providing maximum available inertial support. This is achieved by decoupling the synchronization duties of the APL from the inertial support. The latter is provided by calculating the active-power reference through a dedicated inertia-emulation loop (IEL), which is connected in cascade with the APL. The effectiveness of the proposed method is demonstrated through laboratory experiments including frequency transients of varying size and unbalanced operating conditions.
Frequency conversion
Synchronization
Power system stability
Grid-forming converter
grid-connected converter
Phase locked loops
inertia
Switches
current limiting
frequency stability
low-inertia power system
Impedance
rate of change of frequency
Grid forming
Author
Paul Imgart
Chalmers, Electrical Engineering, Electric Power Engineering
Anant Narula
Chalmers, Electrical Engineering, Electric Power Engineering
Massimo Bongiorno
Chalmers, Electrical Engineering, Electric Power Engineering
Mebtu Bihonegn Beza
Chalmers, Electrical Engineering, Electric Power Engineering
Jan Svensson
Hitachi Energy Research Hitachi Energy
IEEE Transactions on Industry Applications
0093-9994 (ISSN) 1939-9367 (eISSN)
Vol. 60 6 9145-9156Subject Categories
Telecommunications
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/TIA.2024.3443792