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Impedance Modeling ...
Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics
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- Chen, Feifan (författare)
- KTH,Skolan för elektroteknik och datavetenskap (EECS)
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- Zhao, Liang (författare)
- Aalborg Univ, Dept Energy Technol, Aalborg, Denmark.
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- Harnefors, Lennart (författare)
- ABB, Corp Res, Västerås, Sweden.
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- Wang, Xiongfei (författare)
- KTH,Elkraftteknik
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(creator_code:org_t)
- IEEE, 2022
- 2022
- Engelska.
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Ingår i: 2022 IEEE 23RD WORKSHOP ON CONTROL AND MODELING FOR POWER ELECTRONICS (COMPEL 2022). - : IEEE.
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- When grid-following voltage source converters (VSCs) operate in inverter mode, the phase-locked loop (PLL) dynamics introduce a negative-real-part impedance, which may lead to the instability of the closed-loop system, especially in a weak-grid connection. This undesirable property of the PLL may be offset by so-called active damping. Nevertheless, the interaction between the active damping and the adverse PLL impact is not fully understood. To this end, the properties of different active-damping methods are analyzed, with the focus on the q-to-q coupling of the input admittance. One important finding is that adding an integrator to the q-axis active damper can improve the system performance in a weak-grid connection. Simulations and experimental results verify the theoretical analysis.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- phase-locked loop
- impedance
- active damping
- weak grids
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)