Results 1 to 10 of about 79 (70)

Design considerations of series type hybrid circuit breaker (S‐HCB)

IET Power Electronics
The series‐type direct current (DC) hybrid circuit breaker (S‐HCB) concept was previously reported to offer better performance than solid‐state circuit breakers (SSCB) and hybrid circuit breakers (HCB).
Mahmoud Alashi, Triston Cooper, Yuanfeng Zhou, Z. John Shen, Ian Brown, Thomas Wong   +5 more
doaj   +2 more sources

A DC SSCB With Range-Limited Parallel Operation Switches and a Snubber Circuit Utilizing Inverse Current Injection

IEEE Access
Although many snubber circuits have been studied, research on circuits that effectively suppress surge voltage while supporting bidirectional operation remains relatively limited.
Jae-Seong Jo, Sun-Pil Kim, Sang-Hyeok Lee, Sung-Geun Song, Feel-Soon Kang   +4 more
doaj   +1 more source

Solid-State Circuit Breaker Topology Design Methodology for Smart DC Distribution Grids with Millisecond-Level Self-Healing Capability

Energies
To address the challenges of prolonged current isolation times and high dependency on varistors in traditional flexible short-circuit fault isolation schemes for DC systems, this paper proposes a rapid fault isolation circuit design based on an adaptive ...
Baoquan Wei, Haoxiang Xiao, Hong Liu, Dongyu Li, Fangming Deng, Benren Pan, Zewen Li   +6 more
doaj   +1 more source

Comparison of Surge Voltage Reduction and Economic Efficiency of DC SSCBs According to MOV and RCD Snubber Combination

IEEE Open Journal of the Industrial Electronics Society
Metal oxide varistor (MOV) is a nonlinear resistive element whose resistance decreases rapidly when the applied voltage exceeds a threshold value. A dc solid-state circuit breaker (SSCB) uses MOVs or MOV with resistor-capacitor-diode (RCD) snubber ...
Seong Jin Lim, Sung-Geun Song, Guangxu Zhou, Feel-Soon Kang   +3 more
doaj   +1 more source

DC-SSCB Snubber for Electric Propulsion Ships With Effective Surge Voltage Reduction and Fast Dissipation of Fault Current Energy

IEEE Access
This paper proposes a snubber circuit for SSCB that performs voltage clamping operation in two stages to reduce surge voltage. The surge voltage is suppressed in the first stage using a MOV with low operating initiation and clamping voltages.
Jae-Hun Cha, Guangxu Zhou, Sung-Geun Song, Feel-Soon Kang   +3 more
doaj   +1 more source

Review and Analysis of Voltage Clamping Circuits With Low Overvoltage Ratios for DC Circuit Breakers

IEEE Open Journal of the Industrial Electronics Society
Voltage clamping circuits are critical components in most direct-current circuit breakers (dcCBs) to achieve ultrafast dc fault interruptions and an extended lifetime.
Shuyan Zhao, Chunmeng Xu, Lakshmi Ravi, Zhou Dong, Pietro Cairoli   +4 more
doaj   +1 more source

Current Sensor Integration Issues with Wide-Bandgap Power Converters. [PDF]

Sensors (Basel), 2023
Parsa Sirat A, Parkhideh B.
europepmc   +1 more source

Implementation and proficiency analysis of enhanced graph algorithm for DC microgrid applications. [PDF]

Sci Rep
J MA, V S.
europepmc   +1 more source

Optimal circuit breaker allocation strategy in DC transmission-connected systems. [PDF]

Sci Rep
Kim B, Kim I.
europepmc   +1 more source