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Development and Testing of a 10-kA Hybrid Mechanical–Static DC Circuit Breaker
IEEE Transactions on Applied Superconductivity, 2011This paper presents the development and testing of the prototype of a hybrid mechanical-static dc circuit breaker (CB) for quench protection of superconducting magnets based on a mechanical switch paralleled to a static CB. In normal operation, the mechanical switch is closed and it handles the continuous flow of dc current, minimizing the on-state ...
Luca Novello +4 more
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A Fast Mechanical Switch for Medium-Voltage Hybrid DC and AC Circuit Breakers
IEEE Transactions on Industry Applications, 2015This paper presents the design and experimental results of a Thomson coil-based fast mechanical switch for hybrid ac and dc circuit breakers rated at 30-kV voltage and 630-A current. The compact design with optimized circuit parameters and geometric dimensions of components targets 2-mm travel within 1Â ms when driven by a 2-mF capacitor bank precharged
Chang Peng +4 more
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2017 IEEE Second International Conference on DC Microgrids (ICDCM), 2017
A novel modification to Z-Source DC circuit breakers has been proposed to reduce power consumption from its predecessor significantly. The power thyristor serves as the means of circuit isolation and voltage blocking in the event of a fault in traditional Z-Source DC circuit breakers.
Landon Mackey +3 more
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A novel modification to Z-Source DC circuit breakers has been proposed to reduce power consumption from its predecessor significantly. The power thyristor serves as the means of circuit isolation and voltage blocking in the event of a fault in traditional Z-Source DC circuit breakers.
Landon Mackey +3 more
openaire +1 more source
IEEE Transactions on Applied Superconductivity, 2009
This paper describes the feasibility studies of a hybrid dc circuit breaker (CB) for quench protection of superconducting magnets rated for current up to some tens of kiloamperes (kA) and voltage of several kilovolts (kV). The proposed scheme is based on a mechanical switch paralleled to a fully controlled static CB; integrated gate commutated ...
Novello L, Gaio E, Piovan R
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This paper describes the feasibility studies of a hybrid dc circuit breaker (CB) for quench protection of superconducting magnets rated for current up to some tens of kiloamperes (kA) and voltage of several kilovolts (kV). The proposed scheme is based on a mechanical switch paralleled to a fully controlled static CB; integrated gate commutated ...
Novello L, Gaio E, Piovan R
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Low-cost ultra-fast DC circuit-breaker: Power electronics integrated with mechanical switchgear
2018 IEEE International Conference on Industrial Technology (ICIT), 2018The 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 +4 more
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Active Damping of Ultrafast Mechanical Switches for Hybrid AC and DC Circuit Breakers
IEEE Transactions on Industry Applications, 2017An active damping method for Thomson coil actuated ultrafast mechanical switches is proposed, including its control. Ultrafast mechanical switches are crucial for both dc and ac circuit breakers that require fast-acting current-limiting capabilities. However, fast motion means high velocity at the end of travel resulting in over-travel, bounce, fatigue,
Chang Peng +6 more
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Contact Design of Arc Extinguishing Chamber in Virtual Platform of Mechanical DC Circuit Breaker
2020 5th Asia Conference on Power and Electrical Engineering (ACPEE), 2020The DC circuit breaker is used to realize fault isolation and clearing of the DC system, and is an essential core equipment for the DC distribution network. The principle of the mechanical DC circuit breaker is to generate the medium frequency oscillating current by LC and reversely inject into the main circuit to form a current zero crossing point ...
Can Ding, Dengping Tang, Xiaojian Tian
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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), 2017Hybrid 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 +5 more
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Study on malfunction mechanism of semiconductor circuit breaker in 400V DC power supply system
The 2010 International Power Electronics Conference - ECCE ASIA -, 2010Recently, DC power supply systems have been widely viewed as an energy-saving solution. The protection of the system from over current is one of the most important factors in DC power supply system. This paper presents malfunction mechanism of a semiconductor circuit breaker.
Seiya Abe +7 more
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Optimization of a Z-source, ultra-fast mechanically switched, high efficiency DC circuit breaker
2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017A novel modification of the Z-source circuit breaker topology is presented for low voltage applications. An ultra-fast mechanical switch has been used in place of the solid-state switch (thyristor) in the Z-source circuit breaker to reduce the energy loss utilizing the very low resistance of mechanical contactors.
Landon Mackey +3 more
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