Results 31 to 40 of about 628,326 (292)

Impedance Reshaping Method of DFIG System Based on Compensating Rotor Current Dynamic to Eliminate PLL Influence [PDF]

IEEE transactions on power electronics, 2023
The phase-locked loop (PLL) used in the doubly-fed induction generator (DFIG) can cause frequency-coupling phenomena, which will give negative-resistance characteristics of the DFIG at a low frequency, resulting in stability issues under weak-grid ...
Luo, Bochen, Xiong, Xiaoling, Blaabjerg, Frede; id_orcid, Li, Longcan, Sun, Ziming   +4 more
core   +2 more sources

Self-synchronization Voltage Source LVRT Control Method for New Energy Inverter under Weak Grid

Zhongguo dianli
The self-synchronization voltage source control technology of the grid-connected inverter is of great significance to the construction of new power system dominated by renewable energy.
Dan LIU, Kezheng JIANG, Yiqun KANG, Xiaotong JI, Yunyu XU, Fang LIU   +5 more
doaj   +2 more sources

Resonance Suppression of Multi-Inverter Systems Based on Global Admittance Reshaping

Active and Passive Electronic Components
This paper proposes an active damping control method based on converter-side current feedback to mitigate the resonance issue in multi-inverter grid-connected systems caused by coupling with the grid impedance. The method aims to address the reduction in
Jike Zhang, Guifa Wang, Ruiming Liu, Tianchen Zhang, Jiankang Wang   +4 more
doaj   +2 more sources

A Simple Impedance Reshaping Method for Stability Enhancement of Grid-Following Inverter Under Weak Grid [PDF]

, 2021
The conventional vector current control (VCC) scheme has been widely used in the grid-connected inverter systems. However, it suffers from power limitation problems under weak grid conditions.
Huang, Liang; id_orcid, Dao Zhou, Zhou, Dao; id_orcid, Liang Huang, Chao Wu, Wu, Chao; id_orcid, Blaabjerg, Frede; id_orcid, Frede Blaabjerg   +7 more
core   +1 more source

Magnitude-Reshaping Strategy for Harmonic Suppression of VSG-Based Inverter Under Weak Grid

IEEE Access, 2020
Driven by inertial demand from the grid, the virtual synchronous generators (VSGs) are widely utilized in distributed generation systems. However, harmonic sources in the distributed generation systems with high grid impedance will cause grid voltage ...
Wen Yang, Mingyu Wang, Saddam Aziz, Ali Yousaf Kharal   +3 more
doaj   +1 more source

High Frequency Resonance Suppression Strategy of Three-Phase Four-Wire Split Capacitor Inverter Connected to Parallel Compensation Grid

Energies, 2022
With the continuous penetration and development of renewable energy power generation, the distributed grid and the microgrid are becoming increasingly important in modern power systems.
Guoli Feng, Zhihao Ye, Yihui Xia, Heng Nian, Liming Huang, Zerun Wang   +5 more
doaj   +1 more source

DQ Impedance Reshaping of Three Phase Power-Controlled Grid Connected Inverter for Low-Frequency Stability Improvement Under Weak Grid Condition [PDF]

, 2020
Phase-locked loop (PLL) is commonly used to synchronize the phase angle of the injected current of voltage source grid-connected inverters (GCIs) with that of the voltage at point of common coupling.
Wang, Yanbo, Chen, Zhe; id_orcid, E. Torres-Olguin, Raymundo, Zhou, Weihua; id_orcid   +3 more
core   +1 more source

State Feedback Reshaping Control of Voltage Source Converter [PDF]

, 2022
Admittance reshaping is a widely used strategy to address the converters low-frequency stability issues in weak grid, caused by the PLL and its interaction with the dc and ac voltage controls.
Wang, Xiongfei, Zhu, Rongwu, Wang, Xiongfei; id_orcid, Liserre, Marco, Pugliese, Sante, Cecati, Federico   +5 more
core   +1 more source

Resonance suppression and quality improvement control strategy for a three-phase grid-connected voltage-source inverter under weak grid conditions

Frontiers in Energy Research, 2023
The three-phase voltage-source grid-connected inverters suffer from grid-connected current quality problems due to system resonance caused by the under-damping characteristics of the filter and grid impedance, on the one hand, and the grid-connected ...
Zhi Zhang, Yiyun Li, Yiyun Li, Caomao Zhong, Zhaoyun Zhang   +4 more
doaj   +1 more source

Stability analysis of different control modes of grid-connected converters under different grid conditions

Frontiers in Energy Research, 2023
With the sustained popularity of renewable energy generation, high penetration of variable energies, e.g., wind and solar, is reshaping the form of power systems and weakening the strength of the grid.
Zhi Xu, Zhi Xu, Yanhui Qin, Yanhui Qin, Zian Li, Zian Li, Chunlei Jiao, Chunlei Jiao, Baoyu Zhai, Baoyu Zhai, Xiqiang Chang   +10 more
doaj   +1 more source