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Design-Oriented Ana...
Design-Oriented Analysis of DC-Link Voltage Control for Transient Stability of Grid-Forming Inverters
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- Luo, Cheng (author)
- Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China.;Aalborg Univ, AAU Energy, DK-9220 Aalborg, Denmark.
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- Liu, Teng (author)
- Elect Power Res Inst China Southern Power Grid, Guangzhou 510663, Peoples R China.
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- Wang, Xiongfei (author)
- KTH,Elkraftteknik,Aalborg Univ, Dept Energy AAU Energy, DK-9220 Aalborg, Denmark.
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- Ma, Xikui (author)
- Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China.
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Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China;Aalborg Univ, AAU Energy, DK-9220 Aalborg, Denmark. Elect Power Res Inst China Southern Power Grid, Guangzhou 510663, Peoples R China. (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2024
- 2024
- English.
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In: IEEE Transactions on Industrial Electronics. - : Institute of Electrical and Electronics Engineers (IEEE). - 0278-0046 .- 1557-9948. ; 71:4, s. 3698-3707
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- This article analyzes the parametric effect of the dc-link voltage controller (DVC) on the transient stability of grid-forming (GFM) inverters. It is found that the decrease of the proportional gain of DVC may lead to the loss of synchronism (LOS) even if the system is locally stable at the new equilibrium point (EP) after disturbance. Its physical insight is attributed to the unstable limit cycle (ULC) in the phase space according to the bifurcation theory. The GFM inverters whose operating point locates outside of ULC will lose synchronism with the grid. The decrease of the proportional gain of DVC will diminish the ULC, resulting in fewer operating points converging to the new EP and a higher risk of LOS. This bifurcation-based analysis provides a novel perspective for investigating the mechanism of parametric effect for the high-order nonlinear system, which is the article's main contribution. The parametric effect of the integral gain of DVC is also analyzed. A holistic parametric space partition for designing DVC is then drawn from the analysis, and a parametric configuration guideline is provided. The theoretical findings are validated by experimental tests.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Keyword
- Inverters
- Voltage control
- Transient analysis
- Power system stability
- Bifurcation
- Reactive power
- Power system dynamics
- Bifurcation theory
- dc-link voltage controller (DVC)
- grid-forming (GFM) inverters
- transient stability
- unstable limit cycle (ULC)
Publication and Content Type
- ref (subject category)
- art (subject category)
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