Results 291 to 300 of about 21,219 (327)

Voltage sharing between mechanical switch and IGBT in a hybrid DC circuit breaker

2017 4th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST), 2017
Hybrid DC circuit breakers have the advantages of fast fault current interruption with the solid-state semiconductor devices and low conducting loss with the mechanical switches. Therefore it is suitable to be used in the multi-terminal DC transmission system.
Wenlong Yan, Kun Yang, Zhenxing Wang, Zhiyuan Liu, Yingsan Geng, Jianhua Wang   +5 more
openaire   +1 more source

Low-cost ultra-fast DC circuit-breaker: Power electronics integrated with mechanical switchgear

2018 IEEE International Conference on Industrial Technology (ICIT), 2018
The paper describes a concept for fast-acting circuit-breaker using vacuum interrupter (VI) assisted by a power-electronic converter with low output voltage. The converter excites a passive resonant circuit to create current zero-crossing in the arc in the VI to make it extinguish the current.
Lennart Angquist, Antoine Baudoin, Staffan Norrga, Simon Nee, Tomas Modeer   +4 more
openaire   +1 more source

Active damping of ultra-fast mechanical switches for hybrid AC and DC circuit breakers

2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016
An active damping method for Thomson coil actuated ultra-fast mechanical switches is proposed, including its control. Ultra fast mechanical switches are crucial for both DC and AC circuit breakers that require fast-acting, current-limiting capabilities.
Chang Peng, Landon Mackey, Iqbal Husain, Alex Huang, Bruno Lequesne, Roger Briggs   +5 more
openaire   +1 more source

Identification of Key Mechanism Behind Arc Re-Ignition in LC Commutator-Based DC Circuit Breakers [PDF]

2024 7th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)
High Voltage Direct Current (HVDC) systems, crucial for renewable energy and long-distance transmission, en-counter DC fault management challenges due to absent natural zero crossings and rapid fault propagation, causing energy dissipation and re-ignition issues during DC interruption.
Nan, Jing, Chen, George, Golosnoy, Igor O.   +2 more
openaire   +2 more sources

A Nonlinear Inductor-Based Near-Zero Current Sensing Method and Active Commutation Strategy for a Hybrid dc Circuit Breaker

European Conference on Cognitive Ergonomics
Medium voltage dc (MVdc) power systems offer significant advantages for electric ships with increasing power demands. However, managing short-circuit faults remains a challenge.
Qichen Yang, Andre Llanos, K. Schoder, Lukas Graber   +3 more
semanticscholar   +1 more source

Design and experimental study of 10kV DC circuit breaker

2025 6th International Conference on Advanced Electrical and Energy Systems (AEES)
In order to improve the power quality of users in 10 kV flexible distribution network, it is urgent to develop DC circuit breakers for flexible distribution network.
Yu Tian, Jinyang Lin, Yin Huang, Yang Tian   +3 more
semanticscholar   +1 more source

Research on Fault Simulation and Feature Signal Extraction of UR Type Rail Transit DC Circuit Breaker by Secheron

2025 8th International Conference on Energy, Electrical and Power Engineering (CEEPE)
With the continuous construction of China’s rail transit system, circuit breakers, as critical equipment for protecting system safety, have become increasingly important in fault diagnosis and prevention. This paper focuses on the UR type rail transit DC
Tingting Wang, Xiaohua Wang, Xuechao Ge, Xiong Wei, Xiaotian Lei, A. Yang, H. Yuan   +6 more
semanticscholar   +1 more source

A comparison of two piezoelectric actuator concepts for fast mechanical switching in DC hybrid circuit breakers

Review of Scientific Instruments
Amplified piezoelectric actuators have gained considerable attention due to their inherent advantages, including rapid response, reliability, and efficiency, making them promising candidates for Direct Current (DC) switching applications. They can operate in two distinct operational modes: Block–Free (B–F) and Free–Free (F–F) configurations.
Mohmmad Al-Dweikat, Guogang Zhang, Yu Liu, Cui Jian   +3 more
openaire   +2 more sources

A Novel Topology of Hybrid DC Circuit Breaker with High Current Breaking Capacity

International Conference on Electrical Machines and Systems
With the large-scale integration of renewable energy sources into the power grid, power disturbances and impacts in the power system have increased significantly. Hydropower units are required to suppress such fluctuations through frequent regulation. To
Yuantai Li, Congzhe Gao, Chaoyang Ye, Yang Zhang, Yifan Tian   +4 more
semanticscholar   +1 more source

Research on Fault Diagnosis of UR Type Rail Transit DC Circuit Breaker by Sécheron

2025 8th International Conference on Energy, Electrical and Power Engineering (CEEPE)
Mechanical fault diagnosis of DC circuit breakers is a core component of the online monitoring system for the mechanical state of DC circuit breakers.
Hua Li, Xiaohua Wang, Jiaren Wang, Yanchao Gao, Xiaotian Lei, A. Yang, H. Yuan   +6 more
semanticscholar   +1 more source