Results 231 to 240 of about 4,684 (264)

Hydroxyl-Rich Hyperbranched Polyglycerol Additive for Low-Temperature Aqueous Zinc Batteries: Sustained and Efficient Dehydration and High-Conductivity. [PDF]

Adv Sci (Weinh)
Li X, Jin T, Wang Z, Chen Y, Yun C, Shang J, Ge Y, Lu T, Zhuang W, Ma Y, Qi Z.   +10 more
europepmc   +1 more source

Advances in Diagnosis and Treatment of Acute and Chronic Heart Failure: A Comprehensive Review. [PDF]

J Clin Med
Kenyon CR, Van Wyk L, Flom A, Ibrahim R, Nhat Pham H, Lakhdar S, Iftikhar M, Abdelnabi M.   +7 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Robust Impedance Reshaping of Multiple Ongrid Inverters regarding Variable Grid Conditions

2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA), 2021
To 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, Weibin Yin, Lin Ye, Huan Tao, Zhiwei Bian, Yuanbin He, Lijun Hang, Qiguo Han   +7 more
openaire   +1 more source

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
openaire   +1 more source

Review of Impedance-Reshaping-Based Power Sharing Strategies in Islanded AC Microgrids

IEEE Transactions on Smart Grid, 2023
In islanded AC microgrids, loads are supplied by parallel inverters-based distributed generation (DG) units. Accurate power sharing, which is always degraded by the mismatched line impedances of DG units, is an essential mission. Reshaping the output impedance of DG units is an effective method to improve power sharing performance via eliminating the ...
Fei Deng, Wenli Yao, Xiaobin Zhang, Yi Tang, Paolo Mattavelli   +4 more
openaire   +2 more sources

Multivariable DG Impedance Modeling and Reshaping for Impedance Stabilization of Active Distribution Networks

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, Ehab F. El-Saadany   +1 more
openaire   +1 more source

Inverter admittance phase-reshaping strategy for enhancing its robustness to grid impedance

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
Harmonic 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, Lin Zhou, Bin Li, Bao Xie, Qianjin Zhang   +4 more
openaire   +1 more source

Hybrid Impedance Reshaping based Resonance Damping for the Wind Farm Connected HVDC

2020 4th International Conference on HVDC (HVDC), 2020
When the renewable energy system connects to the power electronized voltage source (PVS), such as the voltage controlled energy storage station and HVDC station, the control delay of PVS results in a fact that, the impedance phase of the PVS exceeds 90° periodically with the frequency increasing, while the impedance of renewable energy system side can ...
Ling Dong, Bo Pang, Baomin Fang, Heng Nian, Wei Zhou   +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, 2020
Under 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, Chunming Tu, Qi Guo, Fan Xiao, Fei Jiang, Baihua Lu   +5 more
openaire   +1 more source

Virtual Positive-Damping Reshaped Impedance Stability Control Method for the Offshore MVDC System

IEEE Transactions on Power Electronics, 2019
For the offshore MVDC system, the DC-side medium voltage can easily cause high-frequency oscillation and even instability owing to the complex impedance interactions. The virtual-resistance stability control aiming at rectifier station is introduced from low-voltage DC micro-grid application for mitigating its DC-side oscillation without affecting the ...
Leming Zhou, Wenhua Wu, Yandong Chen, Zhixing He, Xiaoping Zhou, XuCheng Huang, Ling Yang, An Luo, Josep M. Guerrero   +8 more
openaire   +1 more source