Results 21 to 30 of about 3,140 (255)

Virtual composite impedance circulating current suppression strategy with adaptive adjustment capability

IET Generation, Transmission & Distribution, 2023
In the process of accessing distributed power sources in microgrid, there will be serious coupling between active power and reactive power, which will lead to significant changes in the inverter outlet voltage and impedance and increase the circulating ...
Jihong Zhang, Yunfei Liu, Yili Wei, Xin Zhang, Zhenkui Wu   +4 more
doaj   +1 more source

Analysis and implementation of virtual impedance for fixed‐frequency control strategy in microgrid

IET Generation, Transmission & Distribution, 2021
Classic droop control ensures the synchronization of distributed generation (DG) units inside a microgrid without requiring any deployment of communication links, however it causes unwanted frequency fluctuations and degrades system dynamics. Angle droop
Haiya Qian, Qingshan Xu, Yuanxing Xia, Jun Zhao, Pengwei Du   +4 more
doaj   +1 more source

Distributed reactive power control strategy based on adaptive virtual reactance

IET Renewable Power Generation, 2023
In high‐voltage microgrid, the line impedance is mainly inductive and the reactive power of the load cannot be shared equally and reasonably due to the transmission line impedance mismatches.
Hongdong Wang, Xiaogang Wang
doaj   +1 more source

A current limiting strategy for grid-forming converters based on voltage deviation adaptive virtual impedance

International Journal of Electrical Power & Energy Systems
Grid-forming (GFM) converters face the risk of saturation under large disturbances, which will degrade the stability performance of the system. Most existing adaptive virtual impedance methods generate virtual impedance based on current limit values ...
Longyue Wang, Pengfei Hu, Weixuan Zhang
doaj   +1 more source

An integrated control algorithm of power distribution for islanded microgrid based on improved virtual synchronous generator

IET Renewable Power Generation, 2021
Virtual synchronous generator technology can effectively improve the anti‐interference characteristics of the system frequency and bus voltage in the microgrid, and solve the problems of insufficient damping and low inertia of the system.
Liang Zhang, Hao Zheng, Tao Wan, Donghan Shi, Ling Lyu, Guowei Cai   +5 more
doaj   +1 more source

Virtual Quartz Crystal Microbalance: Bioinspired Resonant Frequency Tracking

Biomimetics, 2022
The reference acoustic properties of the quartz crystal used as a resonator are ensured by its high-quality factor (Q-factor). The microbalance of the quartz crystal (QCM) exploits the bulk acoustic properties of the quartz crystal.
Ioan Burda
doaj   +1 more source

Enhanced Reactive Power Sharing and Voltage Restoration Based on Adaptive Virtual Impedance and Consensus Algorithm

Energies, 2022
In this paper, power-sharing management control on an AC islanded microgrid is investigated to achieve accurate reactive power sharing. The droop control method is primarily used to manage the active and reactive power sharing among the DGs in the ...
Mohamed Keddar, Mamadou Lamine Doumbia, Karim Belmokhtar, Mohamed Della Krachai   +3 more
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

Start-Up and Fault-Ride-Through Strategy for Offshore Wind Power via DRU-HVDC Transmission System

Energies
The diode-rectifier unit (DRU)-based high-voltage direct current (HVDC) transmission system offers an economical solution for offshore wind power transmission. However, this approach requires offshore wind farms to establish a strong grid voltage.
Yiting Zhang, Wenjiang Zhu, Cheng Tang, Ni Liu, Sinan Li, Hong Wang   +5 more
doaj   +1 more source

Integrating Patient‐Reported Quality Measures in Systemic Lupus Erythematosus: Development of the American College of Rheumatology Implementation Guide

Arthritis Care &Research, EarlyView.
Objective To support high‐quality, patient‐centered care for systemic lupus erythematosus (SLE), the American College of Rheumatology (ACR) developed evidence‐based measures incorporating clinical and patient‐reported outcome measures (PROMs). Using the Consolidated Framework for Implementation Research (CFIR), we conducted semistructured interviews ...
Catherine Nasrallah, Cherish Wilson, Christine Hariz, Christie M. Bartels, Shanthini Kasturi, Wambui Machua, Amy Bennett, Kate Chiseri, Allison Plitman, Starla Hairston Blanks, April Jorge, Patti Katz, Jinoos Yazdany, Shivani Garg   +13 more
wiley   +1 more source