Results 41 to 50 of about 10,700 (291)

Method for improving voltage sag tolerance of dual power supply PET based on inter-port power coordination

电力工程技术
Dual power supply cascaded-type power electronic transformers (DPSC-PET) is connected to two power supplies with high operational reliability and flexible operation mode, and it can be widely used in medium and low voltage distribution networks. It is of
ZHANG Tengfei, WANG Guanghua, GAO Long, LI Jing, XU Yonghai, WANG Chong   +5 more
doaj   +1 more source

Grading Assessment of Energy Index Considering Equipment Tolerance Characteristics

Zhongguo dianli, 2022
Considering the influence of user equipment's voltage tolerance characteristics on the assessment results, a system-side voltage sag grading assessment method is proposed to improve the energy index, which considers the equipment's tolerance ...
Xingguan FAN, Yonghai XU, Chunhao NIU, Siying DENG   +3 more
doaj   +1 more source

Overcoming Debye Length Limitations in Electrolyte‐Gated Transistor Biosensors Using Nanoscale‐Grooved Oxide Semiconductors Fabricated by Thermal Nanoimprint Lithography

Advanced Functional Materials, EarlyView.
Nanoscale‐grooved indium gallium oxide (IGO) semiconductors, patterned via thermal nanoimprint lithography (NIL) using CD/DVD templates, are integrated into electrolyte‐gated transistor biosensors to overcome Debye length limitations. Precisely engineered concave–convex nanostructures modulate local electrostatic potentials, extend the effective Debye ...
Jong Yu Song, Gyeongmin Lee, Dong Hyung Kim, Woo Lee, Eun‐Ah You, Young‐Geun Ha   +5 more
wiley   +1 more source

Heat‐pump performance: voltage dip/sag, under‐voltage and over‐voltage

The Journal of Engineering, 2014
Reverse cycle air‐source heat‐pumps are an increasingly significant load in New Zealand and in many other countries. This has raised concern over the impact wide‐spread use of heat‐pumps may have on the grid. The characteristics of the loads connected to the power system are changing because of heat‐pumps.
William J.B. Heffernan, Neville R. Watson, Jeremy D. Watson   +2 more
openaire   +2 more sources

3D Printing Strategies for Bioengineering Human Cornea

Advanced Healthcare Materials, EarlyView.
This review highlights recent progress in 3D bioprinting strategies for engineering human corneas. Key aspects include the replication of corneal transparency, curvature, and biomechanical properties, alongside innovations in recent advancements in 3D printing methods, which benefit in overcoming current challenges.
Yunong Yuan, Khoon S. Lim, Gerard Sutton, Gordon G. Wallace, Jingjing You   +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

A Bidirectional Electrical Vehicle Charger and Grid Interface for Grid Voltage Dip Mitigation

Energies, 2020
Power quality issues have recently become a source of major concern due to the large increase in load demand and the addition of various sources of disturbance at the distribution level. Power quality mainly refers to voltage quality.
Osama Saadeh, Anwar Al Nawasrah, Zakariya Dalala   +2 more
doaj   +1 more source

Identification of Voltage Sag Source in Distribution Network Based on BAS-SVM

Zhongguo dianli, 2022
Voltage sag is a kind of power quality problem. In order to improve the identification accuracy of different voltage sag disturbance sources, a voltage sag source identification method based on beetle antennae search (BAS) and support vector machine (SVM)
Haitao LIU, Xiaoyi YE, Ganyun LÜ, Huajun YUAN, Zongpu GENG   +4 more
doaj   +1 more source

Artificial Symbiosis for Bulk Production of Bacterial Cellulose Composites

Advanced Materials, EarlyView.
Co‐cultivation of the cellulose‐producing bacterium with the microalga enables bulk formation of bacterial cellulose under static incubation, with photosynthetically active oxygen‐generating sites throughout the medium. This symbiotic platform supports 3D cellulosic constructs with geometries dictated by the vessel shape.
Kui Yu, Sing Teng Chua, Ran Zhao, Alyssa Smith, Michael Kühl, Alison G. Smith, Tom Ellis, Silvia Vignolini   +7 more
wiley   +1 more source

A Deep Learning Method Based on Bidirectional WaveNet for Voltage Sag State Estimation via Limited Monitors in Power System

Energies, 2022
Voltage sag state estimation on the basis of a limited number of installed monitors is essential to dividing the responsibility for the voltage sag and taking corresponding measurements for improvement in voltage quality.
Yaping Deng, Lu Wang, Hao Jia, Xiaohui Zhang, Xiangqian Tong   +4 more
doaj   +1 more source