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Weak Grid Impacts on Stability of Voltage Source Inverters —Asymmetrical Grid
2018 IEEE Energy Conversion Congress and Exposition (ECCE), 2018This paper presents the stability analysis of voltage source inverters (VSIs) in the presence of asymmetrical weak grids. Large grid impedances associated with weak grids can make grid-connected VSIs unstable. State-of-the-art research on the stability in weak grids focuses solely on symmetrical grid impedances, with little attention paid to the ...
Aswad Adib +3 more
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IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021
For the wind farm connected to line-commutated converter-based high-voltage direct-current (LCC HVDC) and weak grid at sending end, subsynchronous resonance (SSR) is prone to occur due to the impedance interactions among wind farm, weak grid, and LCC ...
Gaoxiang Li +3 more
semanticscholar +1 more source
For the wind farm connected to line-commutated converter-based high-voltage direct-current (LCC HVDC) and weak grid at sending end, subsynchronous resonance (SSR) is prone to occur due to the impedance interactions among wind farm, weak grid, and LCC ...
Gaoxiang Li +3 more
semanticscholar +1 more source
Model Predictive Control of Grid Side Converter in The Weak Grid
2019 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 2019The grid side converter (GSC) needs proper controller design when connected to the weak grid, otherwise it becomes unstable due to the overlook of grid impedance dynamic. Although the phase locked loop (PLL) will cause the instability of the interconnected system that consists of GSC and inductive grid due to its negative damping characteristic, the ...
Liang Chen +4 more
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Improved Design of PLL Controller for LCL-Type Grid-Connected Converter in Weak Grid
IEEE transactions on power electronics, 2020When LCL-type converter is attached to weak grid, its current control and phase-locked loop (PLL) will interact with each other, via the point of common coupling voltage.
Donghai Zhu +3 more
semanticscholar +1 more source
IEEE transactions on power electronics, 2020
With the increasing penetration of the wind power, the stability issues of the weak AC grid-connected doubly fed induction generator (DFIG)-based wind turbines during low-voltage ride through (LVRT) cannot be neglected.
Ruikuo Liu +5 more
semanticscholar +1 more source
With the increasing penetration of the wind power, the stability issues of the weak AC grid-connected doubly fed induction generator (DFIG)-based wind turbines during low-voltage ride through (LVRT) cannot be neglected.
Ruikuo Liu +5 more
semanticscholar +1 more source
An Improved Grid Voltage Feedforward Compensation Scheme of Grid-Connected Inverter in Weak Grid
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC), 2018The grid voltage feedforward control strategy is widely used in the grid-connected inverter, aiming to reduce the disturbance of grid voltage distortion and suppress the impulse current of inverter at startup. However, an extra positive feedback channel will be introduced into the current control loop in weak grid, bringing low harmonics and even ...
Ming Li +4 more
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IEEE Transactions on Industrial Informatics, 2020
Under weak grid, wind farm can easily cause subsynchronous resonance (SSR) owing to the impedance interaction between wind farm and grid. In this article, a synchronous compensator with battery energy storage system (STATCOM/BESS) is connected in ...
Gaoxiang Li +3 more
semanticscholar +1 more source
Under weak grid, wind farm can easily cause subsynchronous resonance (SSR) owing to the impedance interaction between wind farm and grid. In this article, a synchronous compensator with battery energy storage system (STATCOM/BESS) is connected in ...
Gaoxiang Li +3 more
semanticscholar +1 more source
Harmonic compensation method of grid-tied converters in a weak grid
2017 Chinese Automation Congress (CAC), 2017In this paper, a control strategy is proposed to compensate the voltage of point of common coupling (PCC) voltage and grid current harmonic by using line end grid connected inverter. The control strategy uses the current and voltage information at the outlet of the inverter and indirectly calculates the voltage at the PCC in conjunction with the ...
Deng Hua +5 more
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The Grid Impedance Adaptation Dual Mode Control Strategy In Weak Grid
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018With the increasing penetration of distributed energy resources and the wide distribution of access point, the power grid is becoming more and more weak. For the two main stability control strategies in weak grid, namely the current source grid connected mode (CSM) and the voltage source grid connected mode (VSM), the static characteristics of the ...
Ming Li +3 more
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Stability Control for Wind in Weak Grids
IEEE Transactions on Sustainable Energy, 20194 Hz oscillations and 30 Hz oscillations have been observed in real-world wind farms with weak grid interconnections. Such stability issues limit wind power delivery. This paper proposes mechanism-based feedback control strategies suitable for vector control based voltage source converters employed in Type-3 and Type-4 wind to enhance the overall ...
Yin Li, Lingling Fan, Zhixin Miao
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