Grid-Synchronization Stability Analysis for Multi DFIGs Connected in Parallel to Weak AC Grids Article Swipe
Dong Wang
,
Yunhui Huang
,
Min Liao
,
Guorong Zhu
,
Xiangtian Deng
·
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.3390/en12224361
YOU?
·
· 2019
· Open Access
·
· DOI: https://doi.org/10.3390/en12224361
Recent works have shown that phase-locked loop (PLL) synchronized wind turbines (WTs) suffer stability issues when integrated into weak grids. However, most of the current studies are limited to a single machine case, the interactions among the WTs are usually overlooked. This paper studies the stability of multiple doubly-fed induction generators (DFIGs) that are connected in parallel to a weak AC grid. A state space model of a two-DFIG system is firstly presented. Subsequently, eigenvalue sensitivity analysis shows that instability can occur at low short-circuit ratio (SCR) or heavy loading conditions. Meanwhile, participation factor analysis implies that the unstable mode is primarily induced by the interactions between the PLLs of the two WTs. Further, to make out how the PLLs interact to cause instability, a reduced-order model is proposed for analysis simplicity, and an explanation in terms of transfer function residue is given for illustration. Detailed model-based time domain simulations are conducted to validate the analyses’ results.
Related Topics
Concepts
Control theory (sociology)
Induction generator
Phase-locked loop
Grid
Instability
Synchronization (alternating current)
Stability (learning theory)
State space
Transfer function
Topology (electrical circuits)
Wind power
Computer science
Mathematics
Engineering
Physics
Electronic engineering
Mechanics
Electrical engineering
Control (management)
Statistics
Artificial intelligence
Machine learning
Geometry
Jitter
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/en12224361
- https://www.mdpi.com/1996-1073/12/22/4361/pdf?version=1573814235
- OA Status
- gold
- Cited By
- 4
- References
- 20
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2984099615
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W2984099615Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.3390/en12224361Digital Object Identifier
- Title
-
Grid-Synchronization Stability Analysis for Multi DFIGs Connected in Parallel to Weak AC GridsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2019Year of publication
- Publication date
-
2019-11-15Full publication date if available
- Authors
-
Dong Wang, Yunhui Huang, Min Liao, Guorong Zhu, Xiangtian DengList of authors in order
- Landing page
-
https://doi.org/10.3390/en12224361Publisher landing page
- PDF URL
-
https://www.mdpi.com/1996-1073/12/22/4361/pdf?version=1573814235Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://www.mdpi.com/1996-1073/12/22/4361/pdf?version=1573814235Direct OA link when available
- Concepts
-
Control theory (sociology), Induction generator, Phase-locked loop, Grid, Instability, Synchronization (alternating current), Stability (learning theory), State space, Transfer function, Topology (electrical circuits), Wind power, Computer science, Mathematics, Engineering, Physics, Electronic engineering, Mechanics, Electrical engineering, Control (management), Statistics, Artificial intelligence, Machine learning, Geometry, JitterTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
4Total citation count in OpenAlex
- Citations by year (recent)
-
2023: 1, 2020: 3Per-year citation counts (last 5 years)
- References (count)
-
20Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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