Pith Number

pith:2SW4G4VG

pith:2025:2SW4G4VG43UQ5JCHYRLCVD6UT6

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LCL Resonance Analysis and Damping in Single-Loop Grid-Forming Wind Turbines

Frede Blaabjerg, Ioannis Lestas, Lin Cheng, Meng Chen, Yufei Xi

Single-loop grid-forming controls with droop-I reactive power can produce open-loop unstable poles near LCL resonances.

arxiv:2504.06981 v2 · 2025-04-09 · eess.SY · cs.SY

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Claims

C1strongest claim

single-loop GFM (SL-GFM) control schemes incorporating a widely used class of reactive power (RAP) control, referred to as droop-I control, can lead to OL unstable poles. This finding reveals a novel instability mechanism resulting in a reduced stability margin and robustness at high frequencies.

C2weakest assumption

The analysis assumes a specific small-signal model of the SL-GFM with droop-I control and LCL filter, where the open-loop poles are determined by the control structure and parameters; if the model does not accurately represent the real system dynamics or if the droop-I implementation differs, the identified instability may not hold.

C3one line summary

Single-loop GFM wind turbine controls with droop-I RAP can exhibit open-loop instability near LCL resonances, leading to reduced high-frequency stability margins and requiring new active damping designs.

References

30 extracted · 30 resolved · 0 Pith anchors

[1] M. Chen, D. Zhou, A. Tayyebi, E. Prieto-Araujo, F. D ¨orfler, and F. Blaabjerg, “On power control of grid-forming converters: Modeling, 10 0.9999 1 1.0001 1.0002 0.47 0.5 0.53 0 3 6 9 12 15 18 21 24 2 2024

[2] Simultaneous assessment of multiple aspects of stability of power systems with renewable generation, 2024

[3] Power electronics in wind generation systems, 2024

[4] Transient stability of voltage- source converters with grid-forming control: A design-oriented study, 2020

[5] Modeling of grid-forming and grid-following inverters for dynamic simulation of large-scale distribution systems, 2035

Receipt and verification

First computed	2026-06-03T01:05:43.827426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4adc372a6e6e90ea447c4562a8fd49f82caf501ef24eb7c2f7f9024d2ceb51d

Aliases

arxiv: 2504.06981 · arxiv_version: 2504.06981v2 · doi: 10.48550/arxiv.2504.06981 · pith_short_12: 2SW4G4VG43UQ · pith_short_16: 2SW4G4VG43UQ5JCH · pith_short_8: 2SW4G4VG

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2SW4G4VG43UQ5JCHYRLCVD6UT6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d4adc372a6e6e90ea447c4562a8fd49f82caf501ef24eb7c2f7f9024d2ceb51d

Canonical record JSON

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    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2025-04-09T15:37:02Z",
    "title_canon_sha256": "3af0f7216862fb67e892f5c068b1c7273aa96e0d8d41c37cedbce8de7c2708b1"
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