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On Stability of Voltage Source Inverters in Weak Grids
IEEE Access, 2018 As the number of inverters increases in the power grid, the stability of grid-tied inverters becomes an important concern for the power industry. In particular, a weak grid can lead to voltage fluctuations at the inverter terminals and consequently cause
Aswad Adib +3 more
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Inertia Emulation Through Supercapacitor for a Weak Grid [PDF]
IEEE Access, 2021 Renewable energy sources (RES) have been widely incorporated into the power generation to offset fossil fuels in order to minimize carbon emissions. Typically, RES based power generation integrated into the power grid through the power electronic converters.
Ratnam Kamala Sarojini +1 more
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Energies, 2022 The recently stipulated grid codes require wind generators to re-initiate normal power production after grid voltage sag. This paper presents a comparative performance of two commonly employed variable speed wind turbines in today’s electricity market ...
Kenneth E. Okedu, S. M. Muyeen
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Tuning Method of a Grid-Following Converter for the Extremely-Weak-Grid Connection [PDF]
IEEE Transactions on Power Systems, 2022 This paper proves that a grid-following converter can stably connect to a weak grid even short-circuit ratio (SCR) is 1. Root instability causes of this grid-following control are identified including fast control response, insufficient damping, and slow voltage support.
Chuanyue Li, Sheng Wang, Jun Liang
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Magnetically controlled reactors design for weak grids
Ain Shams Engineering Journal, 2021 Power system (PS) requires new flexible AC transmission systems, new solutions for voltage instability problems with simple design and fast response and its equipment, should allow reactive control, short-circuit capacity, dynamic behavior, flexibility ...
Ricardo Manuel Arias Velásquez +1 more
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A Systematic Control Design Method with Active Damping Control in Voltage Source Converters
Applied Sciences, 2022 This paper proposes a systematic control design method for active damping control of grid-connected voltage source converters (VSCs). The proposed control method considers the conventional cascaded control loops and improves them by including additional ...
Hosein Gholami-Khesht +3 more
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A Robust Method for Controlling Grid-Connected Inverters in Weak Grids
IEEE Transactions on Circuits and Systems II: Express Briefs, 2021 Stable operation of grid-connected converters with the LCL filter is essential. Variations of the grid impedance and consequently, variations of the resonance frequency, can push the system toward instability. Also, delay that comes from sampling and PWM, could worsen the stability condition.
Ali Akhavan +2 more
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Comparison of DSOGI-Based PLL for Phase Estimation in Three-Phase Weak Grids
Electricity, 2021 The paper presents a summary of different double second-order generalized integrator (DSOGI)-based phase-locked loop (PLL) algorithms for synchronization with three-phase weak grids.
Jorge Pinto +3 more
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Novel Active Damping Design Based on a Biquad Filter for an LLCL Grid-Tied Inverter
Energies, 2023 LLCL filters for grid-tied inverters have been adopted to get better performance for the harmonics near the switching frequency than commonly used LCL filters. However, the resonant peak caused by a pair of unstable resonance poles of the LLCL filters is
Bin Wang +5 more
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Applied Sciences, 2022 This paper proposed a probabilistic framework that could be used for the sensitivity assessment of grid-connected voltage source converters (VSCs), where uncertainties in the grid short circuit ratio (SCR) and operating point conditions, as well as ...
Hosein Gholami-Khesht +3 more
doaj +1 more source