Results 41 to 50 of about 1,916 (295)
Capacitor Commutation Method for MVDC Hybrid Circuit Breakers
Designs, 2021 The medium voltage DC (MVDC) type system can connect multiple terminals to a common MVDC bus, so it is possible to connect several renewable DC power sources to the common MVDC bus, but a DC circuit breaker is needed to isolate short circuit accidents ...
Hyosung Kim
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Current Limiting Hybrid High Voltage DC Circuit Breaker With Reclosing Function Limiting
Journal of Applied Science and Engineering, 2022 DC circuit breaker is the core equipment for the safe operation of DC transmission system. A current limiting hybrid HVDC circuit breaker topology with reclosing function is proposed in this paper.
Baoge Zhang +4 more
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CIRED - Open Access Proceedings Journal, 2017 In the last years the progressive increase of distributed and non-programmable energy sources arise the interest in the use of DC for medium-voltage distribution systems. The study focuses on the design considerations of the apparatus required to support the management and protection of these applications.
Lars Liljestrand +4 more
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, 2021 Faults in DC systems are difficult to interrupt compared to their AC counterparts due to absence of natural current-zero (CZ) crossing in DC current. This puts forward the need of enhanced arc chambers inside the circuit-breaker to cope with DC arc.
Virdag, Muhammad-Ali-Khan
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CSEE Journal of Power and Energy Systems, 2019 The paper presents an economic hybrid circuit breaker for limiting and interrupting the faults in DC railways substations. For fast fault current interruption, the hybrid breaker incorporates high speed mechanical contacts actuated by power semiconductor
Saady Hasan
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Research on DC power flow controllable multi-port DC circuit breaker
Energy Reports, 2022 For the problem of fault isolation and power flow control in DC grid, this paper proposes a DC power flow controllable multi-port DC circuit breaker. Under the normal operation, this breaker has the function of DC power flow regulation, which is used to ...
Feng Xu +5 more
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Topology and control of a novel hybrid HVDC circuit breaker with self-powered capability
Energy Reports, 2022 Power supply for IGBT drive circuit of HVDC circuit breaker is a great challenge in practical engineering. At present, most of the HVDC circuit breakers rely on external power sources. This paper proposes a self-powered hybrid HVDC circuit breaker.
Huangqing Xiao +4 more
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Design, modelling, and test of a solid-state main breaker for hybrid DC circuit breaker [PDF]
, 2020 Driven by the requirements of reducing air pollutant gas emissions and fuel consumption, the concepts of more electric ship and electric aircraft are attracting increasing attention.
Jiawen Xi +7 more
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Design of mine breaker with self-diagnosis function
Meikuang Anquan, 2023 Aim at the problem that a coal mine safety monitoring system cannot accurately sense the power-off state of a controlled object due to the fact that the output wire of a mine-used contact detection feed breaker is wrong, this paper introduces a self ...
HUANG Chun
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Investigations on the safe stroke of mechanical HVDC vacuum circuit breaker
The Journal of Engineering, 2019 Here, a DC vacuum arc interruption test based on the hybrid high-speed actuator and the method of commutation is carried out in the synthetic loop system. The safe stroke is one of the basic breaking parameters.
Ning Xia +5 more
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