Results 61 to 70 of about 1,294,113 (288)

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

Advanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto, Javier Zamudio‐García, Abraham Sánchez‐Caballero, David Marrero‐López, Vincenzo Esposito   +4 more
wiley   +1 more source

Design of a Solid State Circuit Breaker Using a SiC MOSFET for LVDC Applications

IEEE Access
In this paper, a solid state circuit breaker(SSCB) for a low voltage direct current (LVDC) system is presented. The LVDC distribution system such as a household distribution, require a DC input source, DC loads, and a DC circuit breaker.
Byong Jo Hyon, Poo Reum Jang, Dongmyoung Joo, Yong-Su Noh, Jun-Hyuk Choi, Sang Bin Lee   +5 more
doaj   +1 more source

Modeling and Prediction Analysis of Magnetic Field in DC Yard of VSC-HVDC Station under Short Circuit Condition

Zhongguo dianli, 2021
For the voltage source converter based high voltage direct current (VSC-HVDC) station equipped with hybrid DC breakers, the DC circuit breaker has fast speed for breaking fault current and short time for internal commutation.
Meng BAO, Hong SHEN, Jialiang LI, Yan SHI, Lei QI, Qian WANG   +5 more
doaj   +1 more source

T-Type Modular DC Circuit Breaker (T-Breaker) as a Compensator for Future DC Grids

IEEE Access, 2023
When ac and dc microgrids get exposed to load power changes or voltage transients, instability could occur owing to constant power loads’ (CPLs) behaviour. CPL has the negative impedance behaviour which is the reason behind such instability. A flexible alternating current transmission system (FACTS) devices are used in ac grid to help improve ...
Faisal Alsaif, Yue Zhang, Xiao Li 0078, Nihanth Adina, Khalid Alkhalid, Jin Wang   +5 more
openaire   +2 more sources

Improving DC Circuit Breaker Performance Through an Alternate Commutating Circuit

, 2018
Fault interruption in de circuits is more challenging than in their ac counterparts. The absence of natural current zero crossing along with resistive nature of the dc grids creates a significantly higher fault current to disrupt at the dc circuit ...
Sudipta Sen, Mehraeen, Shahab, Farzad Ferdowsi, Ferdowsi, Farzad, Shahab Mehraeen, Sen, Sudipta   +5 more
core   +1 more source

Genetically Programmed Shape‐Morphing of Engineered Living Materials

Advanced Functional Materials, EarlyView.
Here, bacterial and mammalian engineered living materials (ELMs) are presented, in which living cells direct genetically programmed and enzymatically mediated shape‐morphing. The resulting deformation and shape‐recovery can be actuated in a genetically controlled manner by an ELM incorporating out‐of‐equilibrium counteracting biochemical reactions with
Jan Becker, Yuchen Liu, Miguel Baños, Rosanne Schmachtenberg, Mahmudul Hasan, Claudia Fink‐Straube, Luai R. Khoury, Wilfried Weber   +7 more
wiley   +1 more source

Prediction and Analysis of Transient Electric Field in DC Yard of Flexible Converter Station Under Short-Circuit Conditions

Zhongguo dianli, 2021
In the case of short-circuit fault, the flexible DC converter station would produce transient yet strong electromagnetic field, which would impact on the secondary equipment in the converter station.
Sihang WU, Hong SHEN, Lei QI, Peng QIU, Zhaoxia KUAI   +4 more
doaj   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

Advanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain, Xian'e Li, Mats Fahlman, Olle Inganäs, Koen Vandewal, Feng Gao   +5 more
wiley   +1 more source

DC/DC VOLTAGE CONVERTER PROVIDED WITH A CIRCUIT-BREAKER DEVICE

, 2020
Disclosed is a voltage converter (10) comprising at least one arm (24) extending between a first DC terminal (16) and a second DC terminal (28) and comprising at least one upper half-arm (24u) and one lower half-arm (24l) that are connected, each half ...
Dworakowski, Piotr, Paez Alvarez, Juan, Frey, David, Morel, Florent, Maneiro, Jose, Bacha, Seddik   +5 more
core   +2 more sources

Requirements on MV DC circuit breakers

, 2022
Direct Current (DC) power transmission offers many benefits over Alternating Current (AC) and it is therefore making fast inroads in electrical energy systems all over the world. High voltage direct current transmission High-voltage Direct Current (HVDC) offers efficient transmission over long distances particularly when cables must be used, for ...
Norga, Staffan, Hatsagi, B., Costea, Stefan, Kopejtko, P., Cejnar, P., Mathe, J.   +5 more
openaire   +1 more source