Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Novel Hybrid Current Limiter for Grid-Forming Inverter Control During Unbalanced Faults

Conference ·
;

Grid-forming (GFM) inverter controls have illustrated many desirable features to enable the bulk integration of renewable resources into the future power grid; however, the performance of GFM inverters during unbalanced faults remains underexplored. This paper proposes a novel current-limiting method for GFM inverters to handle unbalanced fault conditions while providing voltage support to the main grid. The proposed current limiter combines concepts of dynamic virtual-impedance and current-reference saturation limiting, all built in the stationary reference frame, to achieve improved current-limiting performance under unbalanced load/fault conditions. System-wide full-order transient simulations with multiple GFM inverters demonstrate the potential of the method and benchmark the performance against state-of-the-art current limiters. Simulation results portray improved voltage balancing performance of the proposed method compared to both current-reference saturation and virtual-impedance limiting.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE National Renewable Energy Laboratory (NREL), Laboratory Directed Research and Development (LDRD) Program
DOE Contract Number:
AC36-08GO28308
OSTI ID:
2007867
Report Number(s):
NREL/CP-5D00-87690; MainId:88465; UUID:c84fc23b-990a-4101-9370-b544b2fed322; MainAdminID:70792
Resource Relation:
Conference: Presented at the 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia), 22-25 May 2023, Jeju Island, Korea; Related Information: 85527
Country of Publication:
United States
Language:
English

References (8)

Enhanced TVI for Grid Forming VSC under Unbalanced Faults September 2021
Virtual-Impedance-Based Current-Limitation of Grid-Forming Converters for Balanced and Unbalanced Voltage Sags June 2022
Sequence-Based Control Strategy With Current Limiting for the Fault Ride-Through of Inverter-Interfaced Distributed Generators January 2020
Grid-Forming Control With Current Limitation for MMC Under Unbalanced Fault Ride-Through June 2021
Extended Current Limitation for Unbalanced Faults in MMC-HVDC-Connected Wind Power Plants August 2018
Stationary-Frame Grid-Forming Inverter Control Architectures for Unbalanced Fault-Current Limiting December 2022
A Review of Current-Limiting Control of Grid-Forming Inverters Under Symmetrical Disturbances January 2022
Research Roadmap on Grid-Forming Inverters November 2020

Similar Records

Related Subjects

POWER TRANSMISSION AND DISTRIBUTION
SOLAR ENERGY
controller anti windup
grid-forming
inverter current limit
inverter-based resources
stationary reference frame control
unbalanced fault