Results 11 to 20 of about 628,326 (292)
New impedance reshaping algorithm for grid-connected DGs
2016 IEEE Power and Energy Society General Meeting (PESGM), 2016 This paper proposes a new control algorithm for optimally reshaping distributed generation (DG) output impedance so that the system damping and bandwidth are maximized. Such impedance reshaping is essential for managing variations in grid impedance and changes in DG operating conditions. The proposed control algorithm involves two design stages. First,
Maher A. Azzouz, Ehab F. El Saadany
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Grid-Connected Inverter Output Impedance Reshaping for Passivity Enhancement and Disturbance Rejection [PDF]
IEEE Access, 2021 To improve both the stability and the disturbance suppression ability of single-phase grid-connected inverters through LCL filters, this paper proposes an inverter output impedance enhancing control mechanism.
Zhiwei Bian +5 more
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A Gray-Box Impedance Reshaping Method of Grid-Connected Inverter for Resonance Damping [PDF]
2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), 2019 Resonance phenomenon of grid-connected inverter may happen due to dynamic variation of grid impedance. Terminal output impedance of inverter can be reshaped by retuning internal parameters of inverter to mitigate resonance issue and stabilize grid ...
Wang, Yanbo +3 more
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Quantitative damping reshaping method based on equivalent RLC circuits using an active damper
IET Power Electronics, 2023 Large scale power electronic converters in renewable energy power system (REPS) constitute a complex multi‐scale high‐order non‐linear network. Harmonic amplitude amplification of specific frequency (e.g.
Fei Li +5 more
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Zhongguo dianliDoubly-fed wind farm often interacts with the power grid, leading to sub/super-synchronous oscillations. To address the issue of limited adaptability in suppressing these oscillations using impedance reshaping methods, this paper proposes an impedance ...
Zejia WANG, Minxiao HAN, Yiwen FAN
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Electronics (Switzerland), 2021 This paper focuses on the instability problem of the medium-voltage DC (MVDC) distribution system and proposes an impedance phase reshaping (IPR) method. To obtain the load impedance model of the MVDC distribution system, the input impedance of the input-
Qian Zhang, Ximei Liu, Meihang Li
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A Double-PLLs-Based Impedance Reshaping Method for Extending Stability Range of Grid-Following Inverter Under Weak Grid [PDF]
IEEE transactions on power electronics, 2022 Conventional vector current control scheme has been widely used in grid-connected inverter systems. However, it suffers from severe power limitation issues under weak grids. This article reveals that the coupling effect between the power delivery and the
Huang, Liang; id_orcid +3 more
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IEEE Access, 2019 With the development of electrified railway, harmonic resonance accidents occur from time to time. Based on the mechanism of resonance, a harmonic resonance suppression radical method by impedance reshaping is proposed.
Fei Lin +2 more
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Admittance Reshaping Control Methods to Mitigate the Interactions between Inverters and Grid
Energies, 2019 With the increasing impedance coupling between inverters and grid caused by the phase-locked loop (PLL), traditional three-phase inverters suffer from the harmonic distortion or instability problems under weak grid conditions.
Ling Yang +3 more
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A grid voltage perturbations based bidirectional impedance uniform control for grid‐connected DC/AC converter [PDF]
IET Renewable Power Generation, 2023 For bidirectional grid‐connected DC/AC converters, the power flow variation substantially alters the system stability, and especially severs under heavy load. Towards this problem, this paper proposes a novel impedance uniform control method to eliminate
Li Liu +5 more
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