Results 71 to 80 of about 37,452 (297)

Zero-Error Frequency Regulation Control Method for Microgrids Based on Consensus Algorithm

Zhongguo dianli, 2020
For islanded microgrids, the microgrid system frequency with traditional droop control often deviates from the rated frequency due to the variation of output power. Therefore, a self-adjusting droop coefficient control strategy for microgrids is proposed.
Yue WANG, Guohua YANG, Jiayi ZHUANG, Huan PAN, Yuqi ZOU, Shijun HAN   +5 more
doaj   +1 more source

Improved droop control strategy for grid-connected inverters [PDF]

Sustainable Energy, Grids and Networks, 2015
An improved control strategy for grid-connected inverters within microgrids is presented in this paper. The strategy is based on the classical P-ω and Q-V droop method. The improvement in the proposed control strategy is twofold: Firstly, the transient response of the droop controller is improved by replacing the traditional method of measuring average
Abusara, M. A., Sharkh, S.M., Guerrero, J. M.   +2 more
openaire   +4 more sources

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

Advanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco, Pierfrancesco Gaziano, Serena Anglese, Simone Morganti, Carlo de Vincentiis, Ferdinando Auricchio, Michele Marino, Michele Conti   +7 more
wiley   +1 more source

Iterative Synthesis of Pentacene Derivatives with Continuous Boron–Oxygen Bonds

Angewandte Chemie, EarlyView.
An iterative synthetic strategy enables the controlled introduction of continuous multiple B–O bonds at the zigzag edge of acenes. A simple two‐step cycle—ipso iodination and Suzuki cross‐coupling/condensation—efficiently constructs BO‐acenes ranging from naphthalene to pentacene.
Seonghwa Jeong, Si‐In Kim, Jonghwan Lee, Hwon Kim, Jinuk Jang, Jiyeon Kim, Wonyoung Choe, Seung Kyu Min, Young S. Park   +8 more
wiley   +2 more sources

Multi-level bus voltage compensation of droop control with enhanced load-sharing capability for DC microgrid

The Journal of Engineering, 2019
In DC microgrid, droop control is an essential part of local primary level in hierarchical control to perform load-sharing and plug-and-play function. The main problem with droop control is that better load sharing is achieved at the cost of higher bus ...
Sucheng Liu, Zhongpeng Li, Wenjie Liu, Xiaodong Liu   +3 more
doaj   +1 more source

Multi-terminal HVDC grids with inertia mimicry capability [PDF]

, 2016
The high-voltage multi-terminal dc (MTDC) systems are foreseen to experience an important development in the next years. Currently, they have appeared to be a prevailing technical and economical solution for harvesting offshore wind energy. In this study,
Gharehpetian, Gevorg B., Luna Alloza, Álvaro, Rodríguez Cortés, Pedro, Rouzbehi, Kumars, Zhang, Weiyi   +4 more
core   +2 more sources

Structural and Chemical Engineering of Sub‐Nanochannel Membranes Toward Ion Selectivity

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in structural and chemical engineering of sub‐nanochannels for ion selectivity. We first introduce fundamental ion transport mechanisms within sub‐nanochannels, followed by strategies to tune pore size, geometry, and surface functionalities, categorized into charge‐based, ion‐recognition, hydrophilic bonding, and ...
Yuyu Su, Huacheng Zhang, Tamar L. Greaves, Qi Han, Weiwei Lei, Dan Liu   +5 more
wiley   +1 more source

Output Impedance Diffusion into Lossy Power Lines [PDF]

, 2017
Output impedances are inherent elements of power sources in the electrical grids. In this paper, we give an answer to the following question: What is the effect of output impedances on the inductivity of the power network?
De Persis, Claudio, Monshizadeh, Nima, Monshizadeh, Pooya, van der Schaft, Arjan   +3 more
core   +3 more sources

Respiratory Organ‐on‐a‐Chip for Disease Modeling: From Architecture to Functional Integration

Advanced Healthcare Materials, EarlyView.
Respiratory organ‐on‐a‐chip (ROC) models capture key mechanical and cellular cues of the human respiratory system, enabling quantitative dissection of disease mechanisms. This review links ROC architectures to disease modeling, functional integration, and commercialization, and proposes a decision framework that aligns model complexity with mechanistic
Jinzhuo Hu, Yongjie Tang, Sidi Liu, Tao Xu, Qian Liu   +4 more
wiley   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source