Results 241 to 250 of about 628,326 (292)
Some of the next articles are maybe not open access.
Hybrid Impedance Reshaping Method of Grid-Connected Inverters in Weak Grid
2023 Power Electronics and Power System Conference (PEPSC), 2023Both the phase-locked loop (PLL) and the common coupling point (PCC) voltage feedforward may have impacts on the inverter system stability in weak grid. Therefore, a hybrid impedance reshaping control strategy is proposed in the paper.
Weike Zheng +3 more
openaire +2 more sources
IEEE Transactions on Smart Grid, 2018
Stability of inverter-based distributed generation units (DGs) is highly dependent on the grid impedance. This paper proposes an adaptive control algorithm for optimally reshaping DG output impedance so that the system dynamic performance is improved.
Maher Abdelkhalek Azzouz +1 more
openaire +1 more source
Stability of inverter-based distributed generation units (DGs) is highly dependent on the grid impedance. This paper proposes an adaptive control algorithm for optimally reshaping DG output impedance so that the system dynamic performance is improved.
Maher Abdelkhalek Azzouz +1 more
openaire +1 more source
Subsynchronous Oscillation Suppression Strategy Based on Energy Storage Impedance Reshaping
2025 International Conference on Smart Grid and Sustainable Energy (SGSE)To address the issue of subsynchronous oscillations resulting from the interaction between power electronic devices and the electrical grid, it is essential to implement effective strategies, a subsynchronous oscillation suppression strategy based on ...
Zhekai Xu +3 more
openaire +2 more sources
2023 IEEE 7th Conference on Energy Internet and Energy System Integration (EI2), 2023
The impedance interaction between grid connected inverters and the distribution grid is an important cause of system resonance. Based on impedance analysis method, this paper takes grid connected inverters as the research object, considers the influence ...
Kun Liu, Qihang Wu, Bin Wang
openaire +2 more sources
The impedance interaction between grid connected inverters and the distribution grid is an important cause of system resonance. Based on impedance analysis method, this paper takes grid connected inverters as the research object, considers the influence ...
Kun Liu, Qihang Wu, Bin Wang
openaire +2 more sources
Impedance Characteristic Analysis and Reshaping Method of DFIG System Based on DPC Without PLL
IEEE Transactions on Industrial Electronics, 2021The phase locked loop (PLL) will introduce the negative resistance near the fundamental frequency, which deteriorates the stability of doubly fed induction generators (DFIG) system under the inductive weak grid. This article develops the impedance model of the DFIG system based on direct power control without PLL, and analyzes the frequency coupling ...
Bin Hu 0033 +3 more
openaire +1 more source
Inertia Emulation in Droop-Based DC Microgrids With Equivalent Converter Impedance Reshaping
IEEE Transactions on Power ElectronicsWith the high penetration of renewable energy sources, the inertia of microgrids has declined. In dc microgrids, the lack of inertia leads to bus voltage fluctuations, which may threaten system stability.
Fei Deng +4 more
openaire +2 more sources
Graphical Impedance Reshaping Approach for LCL-Filtered Voltage Source Inverter
IEEE Transactions on Power ElectronicsImpedance reshaping has proven to be effective to ensure the stability of the LCL-filtered voltage source inverters against the grid impedance variation. Lots of reshaping approaches have been developed to date. However, there lacks an intuitive approach
Xuehua Wang, Xinbo Ruan
exaly +2 more sources
Inverter admittance phase-reshaping strategy for enhancing its robustness to grid impedance
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017Harmonic resonances around the intersection frequency is triggered with the stability margin decreasing to zero and the system will be unstable with the stability margin reducing to be negative. For suppressing harmonics, the phase difference between the inverter admittance and grid admittance should be lower than 120° at their intersection.
Chen Zheng +4 more
openaire +1 more source
Impedance Reshaping Control Method to Improve Weak Grid Stability of Grid-Connected Inverters
IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, 2020Under weak grid conditions, the grid impedance and phase-locked loop (PLL) affects the robust stability of grid-connected inverters, leading to harmonic resonance, or even instability in the system. In this paper, a impedance remodeling control method is proposed to enhance the stability of grid-connected inverters with high grid impedance.
Jiayuan Gao +5 more
openaire +1 more source
Robust Impedance Reshaping of Multiple Ongrid Inverters regarding Variable Grid Conditions
2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA), 2021To avoid the cost of extra high-precision sensing circuit, single injected current feedback control scheme has been developed to complete both current regulation and active damping control of LCL-type filter-based grid-connected inverter. However, traditional single current feedback control method is sensitive to the variation of grid impedance.
Xiaolei Yang +7 more
openaire +1 more source