A Bipolar Hybrid Circuit Breaker for Low-Voltage DC Circuits

2021 ◽  
Author(s):  
Sudipta Sen ◽  
Shahab Mehraeen ◽  
Keyue Smedley
Keyword(s):  
Low Voltage ◽  
Circuit Breaker ◽  
Hybrid Circuit

scholarly journals Gate Drive Controller for Low Voltage DC Hybrid Circuit Breaker

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1753 ◽  
Author(s):  
Hyosung Kim
Keyword(s):  
Direct Current ◽  
Distribution System ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Electrical Contact ◽  
Circuit Breaker ◽  
Contact Type ◽  
Contact Points ◽  
Arc Flash ◽  
Hybrid Circuit

With the advent of direct current (DC) loads such as LED lighting, IT equipment, electric vehicles, and DC powers generated from renewable energy sources, low voltage DC (LVDC) distribution system is becoming a hot issue. One of the hurdles in the LVDC distribution system is arc flash at the contact points that occurs during the circuit is opening. Unlike alternating current, direct current has no zero points and sustains constantly. Therefore, there is a risk of electric fire due to continuous generating arcs when the load current is interrupted with an existing electrical contact type circuit breaker. Recently, the concept of a hybrid circuit breaker that takes advantage of traditional electrical contact type switch and the arcless semiconductor switch has been proposed, but how to cooperatively operate the two switches has become an issue. This paper analyzes the principle of a hybrid circuit breaker for blocking LVDC current and proposes a gate drive controller for it. Through 400V class LVDC cutoff test, the operation of the proposed hybrid circuit breaker is verified and the characteristics are analyzed.

scholarly journals Capacitor Commutation Method for MVDC Hybrid Circuit Breakers

Designs ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 28
Author(s):  
Hyosung Kim
Keyword(s):  
Short Circuit ◽  
Circuit Breaker ◽  
Reverse Current ◽  
Resonant Circuit ◽  
Power Circuit ◽  
Power Sources ◽  
Semiconductor Switch ◽  
Current Commutation ◽  
Dc Circuit Breaker ◽  
Hybrid Circuit

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 that may occur in the MVDC bus. For this purpose, the concept of a hybrid DC circuit breaker that takes advantage of a low conduction loss contact type switch and an arcless-breaking semiconductor switch has been proposed. During break the hybrid switch, a dedicated current commutation device is required to temporarily bypass the load current flowing through the main switch into a semiconductor switch branch. Existing current commutation methods include a proactive method and a reverse current injection method by a LC (Inductor-capacitor) resonant circuit. This paper proposes a power circuit of a new MVDC hybrid circuit breaker using a low withstanding voltage capacitor branch for commutation and a sequence controller according to it, and verifies its operation through an experiment.

scholarly journals Simulation study of influence of the outlet elastic baffle on pressure in arc chamber during the interrupting process of low-voltage circuit breaker

AIP Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 065030
Author(s):  
Nairui Yin ◽  
Hongwu Liu ◽  
Zongqian Shi ◽  
Ruiliang Guan
Keyword(s):  
Simulation Study ◽  
Low Voltage ◽  
Circuit Breaker

A Cost Effective Hybrid Circuit Breaker Topology for Moderate Voltage Applications

2018 ◽  
pp. 751-759
Author(s):  
D. S. Sanjeev ◽  
R. Anand ◽  
A. V. Ramana Reddy ◽  
T. Sudhakar Reddy
Keyword(s):  
Circuit Breaker ◽  
Cost Effective ◽  
Hybrid Circuit

Simulation of the Effects of Several Factors on Arc Plasma Behavior in Low Voltage Circuit Breaker

2005 ◽  
Vol 7 (5) ◽  
pp. 3069-3072 ◽  
Author(s):  
Li Xingwen ◽  
Chen Degui ◽  
Wang Qian ◽  
Li Zhipeng
Keyword(s):  
Low Voltage ◽  
Circuit Breaker ◽  
Arc Plasma ◽  
Plasma Behavior
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