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Impedance-Based Stability Criterion for Grid-Connected Inverters
Abstract
Grid-connected inverters are known to become unstable when the grid impedance is high. Existing approaches to analyzing such instability are based on inverter control models that account for the grid impedance and the coupling with other grid-connected inverters. A new method to determine inverter-grid system stability using only the inverter output impedance and the grid impedance is developed in this paper. It will be shown that a grid-connected inverter will remain stable if the ratio between the grid impedance and the inverter output impedance satisfies the Nyquist stability criterion. This new impedance-based stability criterion is a generalization to the existing stability criterion for voltage-source systems, and can be applied to all current-source systems. A single-phase solar inverter is studied to demonstrate the application of the proposed method.
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Cited by
Modeling and Analysis of Harmonic Stability in an AC Power-Electronics-Based Power System
Wang, X., Blaabjerg, F., & Wu, W. (2014) · IEEE Transactions on Power Electronics · doi:10.1109/tpel.2014.2306432 · Cited by 785
Impedance-Based Analysis of Grid-Synchronization Stability for Three-Phase Paralleled Converters
Wen, B., Dong, D., Boroyevich, D., Burgos, R., Mattavelli, P., & Shen, Z. (2016) · IEEE Transactions on Power Electronics · doi:10.1109/tpel.2015.2419712 · Cited by 586
Wang, L., Qin, Z., Slangen, T., Bauer, P., & van Wijk, T. (2021) · IEEE Open Journal of Power Electronics · doi:10.1109/ojpel.2021.3054601 · Cited by 417
Impedance-Model-Based SSR Analysis for Type 3 Wind Generator and Series-Compensated Network
Miao, Z. (2012) · IEEE Transactions on Energy Conversion · doi:10.1109/tec.2012.2211019 · Cited by 329
Frequency Domain Stability Analysis of MMC-Based HVdc for Wind Farm Integration
Lyu, J., Cai, X., & Molinas, M. (2016) · IEEE Journal of Emerging and Selected Topics in Power Electronics · doi:10.1109/jestpe.2015.2498182 · Cited by 267
Metadata
- Authors
- Sun, J.
- Venue
- IEEE Transactions on Power Electronics
- Published
- 2011-11
- Volume
- 26
- Issue
- 11
- Pages
- 3075-3078
- ISSN
- 0885-8993 (ISSN-L)
- OpenAlex
- W2139361710
- Cited by
- 2,574
- References
- 0
- FWCI
- 74.56
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sun, J. (2011). Impedance-Based Stability Criterion for Grid-Connected Inverters. IEEE Transactions on Power Electronics. https://doi.org/10.1109/tpel.2011.2136439
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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