Evaluation of design variables in Thompson coil based operating mechanisms for ultra-fast opening in hybrid AC and DC circuit breakers

Peng, Chang; Husain, Iqbal; Huang, Alex Q.

doi:10.1109/apec.2015.7104673

Cited by 17 publications

(5 citation statements)

References 13 publications

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“…2). Both simulations and experiments indicate that a capacitor bank charged to a higher voltage drives the moving mass to a higher speed [9][10][11][12][13][14][15][16][17]. However, this is only a reflection of systems starting with more stored energy.…”

Section: B Problem Descriptionmentioning

confidence: 99%

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Drive circuits for ultra-fast and reliable actuation of Thomson coil actuators used in hybrid AC and DC circuit breakers

Peng

Huang

Husain

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Thomson coil actuators (also known as repulsion coil actuators) are well suited for vacuum circuit breakers when fast operation is desired such as for hybrid AC and DC circuit breaker applications. This paper presents investigations on how the actuator drive circuit configurations as well as their discharging pulse patterns affect the magnetic force and therefore the acceleration, as well as the mechanical robustness of these actuators.Comprehensive multi-physics finite-element simulations of the Thomson coil actuated fast mechanical switch are carried out to study the operation transients and how to maximize the actuation speed. Different drive circuits are compared: three single switch circuits are evaluated; the pulse pattern of a typical pulse forming network circuit is studied, concerning both actuation speed and maximum stress; a two stage drive circuit is also investigated. A 630 A, 15 kV / 1 ms prototype employing a vacuum interrupter with 6 mm maximum open gap was developed and tested. The total moving mass accelerated by the actuator is about 1.2 kg. The measured results match well with simulated results in the FEA study.

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Section: B Problem Descriptionmentioning

confidence: 99%

“…The software used is COMSOL Multiphysics. For additional details regarding the method of the FEA modeling, the readers are referred to [17].…”

Section: Fea Modelingmentioning

confidence: 99%

Drive circuits for ultra-fast and reliable actuation of Thomson coil actuators used in hybrid AC and DC circuit breakers

Peng

Huang

Husain

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…The phenomenon of dynamic rejection of a conductive element (disc) magnetically coupled with the coil as a result of generating an impulse magnetic field was first presented by Thomson. Therefore, researchers of this actuator commonly use the following terms in the wide literature: "Thomson's phenomenon" or "Thomson's coil" [6,8,9,19]. One of the conditions for obtaining a high force in a short time is a small value of resistance of the coil circuit and of internal resistance of the voltage source.…”

Section: Inductive Dynamic Drive (Idd)mentioning

confidence: 99%

“…Concerning processes occurring in electrodynamic drives, previous papers on both using an analytical approach [1,2] and numerical-analytical approach [3,4] assumed several additional simplifications, the most important of which were: assumption of cylindrical symmetry of the system, simplification of the analysis to the skin layer only, omitting the influence of disc motion on IDD parameters, and, finally, assuming a priori knowledge of the excitation coil current (Thomson) or the distribution of the current radial density in the disc. Concerning these assumptions, the last important reports using the numerical approach [5][6][7][8][9][10][11][12][13][14][15][16][17] did not analyze all magneto-thermo-elastic phenomena or also assumed current extortion or quasi-steady state voltage.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Electrodynamic Phenomena in an Ultra-Rapid Inductive–Dynamic Actuator as Applied to Hybrid Short-Circuit Breakers—A Review Study

et al. 2022

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This article is a study of the research development of electrodynamic phenomena occurring in ultra-fast electrodynamic drives. These types of linear drives are among the fastest, not only because of the huge accelerations achieved, but, above all, because of the extremely short reaction time. For this reason, electrodynamic drives are used in hybrid short-circuit breakers. The phenomena occurring in this type of drive are actually magneto-thermo-elastic in nature, but the coupling of these phenomena should be considered weak if the criteria for repeatable operation in a hybrid circuit breaker system are met. The authors have been researching this type of drive for many years through not only experimental studies, but also primarily simulation studies developing models of such drives. The authors present the history of the development starting from the first works of Thomson, and Kesserling and ending with the most current models, including mainly their own. This article presents mainly works studying electrodynamic phenomena. Thermal and mechanical phenomena were comprehensively presented by the authors in previous papers.

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“…However, the disadvantage of the solution is the complexity of the drive mechanism and the cost of its implementation. Another solution is spring mechanisms accelerated by electromagnetic systems [6,20,21]. In contrast to the drive built on the basis of the Thomson coil, these mechanisms are characterized by simpler construction and lower cost of execution.…”

Section: Literature Reviewmentioning

confidence: 99%

Thyristor Arc Eliminator for Protection of Low Voltage Electrical Equipment

2019

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The paper presents the layout of two opposing thyristors working as an Arc Eliminator (AE). The presented solution makes it possible to protect an electrical apparatus against the effects of an arcing fault. An Arc Eliminator is assumed to be a device cooperating with the protected apparatus. Thyristors were used because of their speed of operation and a relatively lower cost compared to other semiconductors with the same current-carrying capacity. The proposed solution, as one of the few currently available, makes it possible to eliminate the fault arc—both at short-circuit currents and current values to which overcurrent protections do not react. A test circuit was designed and made to study the effectiveness of the thyristor arc eliminator. A series of tests was carried out with variable impedance in the arc branch, including the influence of circuit inductance on arc time. It was found that the thyristor arc eliminator effectively protects devices powered from a low voltage power network against the effects of a fault or arc fault. The correctness of system operation for a wide range of impedance changes in the circuit feeding the arc location was demonstrated.

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Evaluation of design variables in Thompson coil based operating mechanisms for ultra-fast opening in hybrid AC and DC circuit breakers

Cited by 17 publications

References 13 publications

Drive circuits for ultra-fast and reliable actuation of Thomson coil actuators used in hybrid AC and DC circuit breakers

Drive circuits for ultra-fast and reliable actuation of Thomson coil actuators used in hybrid AC and DC circuit breakers

Modeling of Electrodynamic Phenomena in an Ultra-Rapid Inductive–Dynamic Actuator as Applied to Hybrid Short-Circuit Breakers—A Review Study

Thyristor Arc Eliminator for Protection of Low Voltage Electrical Equipment

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