Inner-Loop Controllers for Grid-Forming Converters
Source abstract
Abstract
This paper presents a detailed discrete-time implementation of an inner-loop voltage controller with a current limiter for grid-forming converters with an LC filter connected to the grid. The proposed approach utilizes a state feedback control law that depends on the states of both the converter and the internal model controller. Additionally, a resonant controller is designed to accurately track the fundamental frequency of the grid voltage. The stability of the proposed controller is analyzed for both virtual impedance and virtual admittance implementations. To validate the controller’s effectiveness, simulation results are provided using a Hardware-in-the-Loop (HIL) setup, alongside a comparison of different virtual impedance implementations.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Microgrid Control and Optimization · HVDC Systems and Fault Protection · Multilevel Inverters and Converters
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Campus Sapiranga, Instituto Federal Sul-rio-Grandense, Pelotas 96015-360, Brazil
Campus Farroupilha, Instituto Federal do Rio Grande do Sul, Bento Gonçalves 95700-344, Brazil
GEPOC, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
Funding
Conselho Nacional de Desenvolvimento Científico e Tecnológico—CNPq
References (31)
Show source-provided references
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