Results 271 to 280 of about 3,167,411 (345)

Grid Integration of Renewable Energy Sources into Weak Grids

2022
This dissertation investigates the grid integration of converter-based renewable energy sources (RESs) into weak grids. For this purpose, a grid-following inverter (GFLI) is chosen as the RES, and its stability is analyzed. Additionally, the thesis proposes a method for the stability enhancement of the GFLI.
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Analysis and Enhancement of Active Power Transfer Capability for DFIG-Based WTs in Very Weak Grid

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
Wind power generation yields significant economic and social benefits, especially for developing countries. However, large wind power plants (WPPs) are usually constructed in remote areas, leading to a weak grid.
Xiang Guo, Donghai Zhu, X. Zou, Yihang Yang, Yong Kang, Wangqianyun Tang, Li Peng   +6 more
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An Adaptive Strategy Based on Repetitive Predictive Control for Improving Adaptability of LCL-Type Grid-Connected Inverters Under Weak Grid

IEEE transactions on power electronics, 2022
For current-controlled grid-connected inverters with LCL filter, the essence of grid voltage full feedback is to improve the output impedance of grid-connected inverters to infinity, which can eliminate the influences of grid voltage distortion and the ...
Mingming Li, Huafeng Xiao, M. Cheng
semanticscholar   +1 more source

A Robust Grid-Voltage Feedforward Scheme to Improve Adaptability of Grid-Connected Inverter to Weak Grid Condition

IEEE transactions on power electronics, 2021
The feedforward schemes of the voltage at point of common coupling (PCC) have been widely used in grid-connected inverters to reject the current harmonics caused by the grid voltage distortion.
Xuehua Wang, Kuang Qin, X. Ruan, Donghua Pan, Yuying He, Fuxin Liu   +5 more
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Markov Jump System Modeling and Control of Inverter-Fed Remote Area Weak Grid via Quantized Sliding Mode

IEEE Transactions on Power Systems
Power grids located in the remote areas mostly show the features of high inverter-fed energy penetration, low grid strength, weak maintenance forces and high natural disaster risks.
Linyun Xiong, Ruikai Song, Sunhua Huang, Changyu Ban, Penghan Li, Ziqiang Wang, Muhammad Waseem Khan, Tao Niu   +7 more
semanticscholar   +1 more source

Operating Wind Power Plants Under Weak Grid Conditions Considering Voltage Stability Constraints

IEEE transactions on power electronics, 2022
This article analyzes the power transfer limit (Pmax) of wind power plants (WPPs) under the weak grid condition. It is pointed out that the impact of different grid parameters and grid configurations on Pmax cannot be fully reflected by the short-circuit
T. Lund, Heng Wu, H. Soltani, J. G. Nielsen, G. Andersen, Xiongfei Wang   +5 more
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Optimized Design of Demagnetization Control for DFIG-Based Wind Turbines to Enhance Transient Stability During Weak Grid Faults

IEEE transactions on power electronics
This letter analyzes the transient stability of DFIG-based wind turbines (WTs) with demagnetization control during weak grid faults. It is firstly pointed out that there exist transient instability issues, and the main influential factors (i.e., fault ...
Yumei Ma, Donghai Zhu, Jiabing Hu, Ruikuo Liu, X. Zou, Yong Kang   +5 more
semanticscholar   +1 more source

A Reference Frame Rematching Method for Enhancing Large-Signal Stability of Grid-Following Inverter Under Weak Grid

IEEE transactions on power electronics
The classical phase-locked loop (PLL)-based vector current control scheme has been widely used in grid-following (GFL) inverter systems. However, GFL inverters with this classical control scheme tend to be unstable under severe grid fault conditions ...
Liangwei Huang, F. Blaabjerg
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Stability Analysis of Grid-Connected Inverter in Weak Grid Systems

Advanced Materials Research, 2012
Distributed Generation may be located far away from load centers due to their use of new energy resource distribution characteristics. In this case, Long distance transmission lines will introduce an equivalent impedance to the grid, so that the grid showing the characteristics of a weak grid.
Xin Chen, Chun Yin Gong, Lin Cheng
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Optimal Energy Utilization of MMC-HVDC System Integrating Offshore Wind Farms for Onshore Weak Grid Inertia Support

IEEE Transactions on Power Systems
Modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems have the potential to support grid frequency by utilizing the electrostatic energy stored in sub-module capacitors.
Haobo Zhang, W. Xiang, Yongjie He, J. Wen   +3 more
semanticscholar   +1 more source