Results 41 to 50 of about 1,496 (223)

Comb‐Driven Coherent Optical Transmitter for Scalable DWDM Interconnects

Laser &Photonics Reviews, EarlyView.
A comb‐driven coherent optical transmitter on a Si/SiN platform enables scalable DWDM interconnects by integrating ultra‐compact microring‐assisted modulators and interleavers. High‐baud coherent signaling achieves 400 Gb/s per wavelength and >$>$1 Tb/s multi‐channel transmission, with projected >$>$10 Tb/s per fiber, offering a path toward energy ...
Alireza Geravand, Erwan Weckenmann, Jean‐Michel Vallée, Farshid Shateri, Zibo Zheng, Simon Levasseur, Bo Yang, Jiajian Chen, Ting Wang, Zihao Wang, Leslie A. Rusch, Wei Shi   +11 more
wiley   +1 more source

Design of a snubber circuit for low voltage DC solid-state circuit breakers [PDF]

, 2021
Solid‐state circuit breakers (SSCBs) are designed to interrupt fault currents typically several orders faster than its electromechanical counterparts. However, such an ultrafast switching operation would produce a dangerous overvoltage which might cause ...
Ekkanath Madathil Sankara Narayanan, Wang, Z., Zhongying Wang, Madathil, S.   +3 more
core   +1 more source

A comprehensive review of impedance source network DC circuit breaker topologies

Cogent Engineering
Dc microgrids (MG) have drawn more attention due to the demand for renewable energy sources, energy storage devices in distributed generation, and the separation of DC loads requiring more power converters.
Marwan R. Abed, Oday A. Ahmed, Ghassan A. Bilal, Pablo Gomez   +3 more
doaj   +1 more source

A DC/DC autotransformer with integrated fault blocking capability

Zhejiang dianli, 2023
As crucial equipment for multi-voltage DC interconnection， high-capacity high-voltage DC/DC converters can be used for voltage conversion and DC fault isolation.
LU Yi, WANG Feng, DENG Weicheng, CHEN Qian, XU Jianzhong, QIU Peng   +5 more
doaj   +1 more source

A Novel Digital Twin Platform for Accelerating Power Systems Restoration

Energy Internet, EarlyView.
Hardware Architecture Design of DT System in Laboratory. ABSTRACT With the global energy structure transforming towards the goal of net zero emissions, the penetration of an inverter‐based resource (IBR) in power systems is increasing. This transformation poses two critical challenges: the system post blackout restoration process becomes extremely ...
Yiliang Fan, Xiaolin Ding, Ray Zhang, Yucong Zhao, Nan Chen, Xiao‐Ping Zhang, Yixin Li, Chengyi Wu, Wenyan Qian   +8 more
wiley   +1 more source

Machine Learning Enabled Cluster Grouping of Varistors in Parallel-Structured DC Circuit Breakers

IEEE Open Journal of Power Electronics, 2023
This letter presents the first ever trial of machine learning enabled cluster grouping of varistors for DC circuit breakers (DCCBs). It reveals that the manufacturing discrepancy of varistors is a main challenge in their parallel connection. The proposed
Shuyan Zhao, Yao Wang, Reza Kheirollahi, Zilong Zheng, Fei Lu, Hua Zhang   +5 more
doaj   +1 more source

Investigation of the Simplified Equivalent Circuit Model of the Post‐Arc Sheath Stage in DC Vacuum Circuit Breakers

High Voltage, EarlyView.
ABSTRACT This paper presents a simplified equivalent circuit model (ECM) for the post‐arc sheath stage in DC vacuum circuit breakers and outlines the method for calculating circuit parameters using the particle‐in‐cell Monte Carlo collision (PIC‐MCC) method. The post‐arc sheath is modelled as a parallel combination of a variable resistor and a variable
Xubin Li, Xingyu Guo, Wen Wang, Xiaoming Liu, Minfu Liao, Jiyan Zou   +5 more
wiley   +1 more source

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

Analysis of the Feasibility of Using Hybrid DC Circuit Breakers with Forced Switching for Parallel Connections

Energies
The use of advanced switching technologies, including hybrid and fully semiconductor-based circuit breakers, enables a significant reduction in the prospective short-circuit current. This enhances the level of circuit protection by minimizing thermal and
Łukasz Nowak, Michał Rodak, Piotr Borkowski   +2 more
doaj   +1 more source

Study on working condition of 750 kV AC filter breaker in ± 1100 kV UHVDC system

The Journal of Engineering, 2019
In this article, the Changji-Guquan ± 1100 kV ultra-high voltage direct current (UHVDC) system has been established by PSCAD software, especially for the arc of the circuit breakers.
Zexin Zhao, Jie Guo, Fang Yu, Xuni Rao, Xiaoke Wu   +4 more
doaj   +1 more source