A Novel Flux Weakening Control Strategy for Permanent Magnet Actuator of Vacuum Circuit Breaker

Fang, Shuhua; Liu, Qingdong; Lin, Heyun; Ho, S. L.

doi:10.1109/tie.2015.2500182

Cited by 29 publications

(14 citation statements)

References 17 publications

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“…In addition, a novel high-response electromagnetic actuator has been proposed for an electronic engraving system in [25], but it cannot be widely adopted in common systems. In [26], a flux-weakening control strategy to reduce the fluxes for holding forces has been proposed to shorten start-up time; however, it is only suitable for PM actuators.…”

Section: Of 12mentioning

confidence: 99%

A Novel Breaking Strategy for Reduced Response Time of Electromagnetic Contactor by Reverse Voltage Application

Fang

Chen

et al. 2019

Energies

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This paper proposes a novel breaking strategy for dramatically shortening the response time of a single, stable electromagnetic contactor. A reverse voltage was applied across the excitation coil to increase the decay velocity of the magnetic field in the iron core, leading to a dramatic reduction of the electromagnetic force when the contactor initiated the breaking process. The applied time of the reverse voltage was determined by numerical computation of circuit, magnetic field, and forces. The polarity of source voltage was overturned by controlling switching devices in the bridge drive circuit. A co-simulation coupling magnetic field, machinery, and circuit was carried out using Maxwell and Circuit Editor software. Experimental results are reported to demonstrate the effectiveness of the proposed breaking strategy for shortening the response time of an electromagnetic contactor.

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Section: Of 12mentioning

confidence: 99%

A Novel Breaking Strategy for Reduced Response Time of Electromagnetic Contactor by Reverse Voltage Application

Fang

Chen

et al. 2019

Energies

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“…Content may change prior to final publication. The moving coil actuator takes 2.5 ms to open the vacuum interrupter, which is much faster than a permanent magnet actuator due to the light moving mass [13,14]. The Thomson coil actuator is able to open the vacuum interrupter within 1 ms but the operating efficiency is low [13,15].…”

Section: Superconductor Hybrid DC Circuit Breaker Prototypementioning

confidence: 99%

Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker

Pei

Cwikowski

Smith

et al. 2018

IEEE Trans. Appl. Supercond.

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Abstract-Direct current (DC) circuit breakers are a key enabling technology for fault management in multi-terminal high voltage direct current (HVDC) systems. DC fault isolation is challenging due to the high rate of rise of the fault current and the lack of natural current zero-crossings found in AC systems. In this paper we present a novel superconducting hybrid DC circuit breaker which utilizes the intrinsic characteristics of the superconductor material. The automatic quench of the superconductor coil as a result of a high fault current transfers the current from the mechanical switch to the semiconductor switch. The isolating mechanical switch is able therefore to open at low current and recover its dielectric capability rapidly. A low voltage DC circuit breaker prototype has been built using a multi-strand Magnesium Diboride (MgB2) coil, a vacuum interrupter and an IGBT module. This prototype successfully demonstrated interruption of 500 A DC within 4.4 ms. This paper includes the design of the superconducting hybrid breaker prototype and a detailed analysis of the experimental results. This superconducting hybrid DC circuit breaker has significant potential for scaling-up to high voltage and high current applications.  Index Terms-DC circuit breaker, hybrid circuit breaker, Magnesium Diboride, MgB2, mechanical switch, semiconductor switch, and superconducting coil.

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“…Wang et al [10] developed a new bi-stable PMA with a multi-magnetic circuit structure for 126 kV VCBs. Several pieces of research on the design and control of excitation coils and driving circuits were conducted to meet the requirements of high voltage VCBs [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization of a Permanent Magnet Actuator for High Voltage Vacuum Circuit Breaker Based on Adaptive Surrogate Modeling Technique

2019

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A novel mono-stable permanent magnet actuator (PMA) for high voltage vacuum circuit breaker (VCB) and its optimal design method are proposed in this paper. The proposed PMA is featured with a structure of separated magnetic circuits, which makes the holding part and closing driving part work independently without interference. The application of an auxiliary breaking coil decreases the response time in the initial phase of opening operation, and an external disc spring is adopted to accelerate the opening movement, which makes the PMA meet the fast-breaking requirement of high voltage VCB. As calculating the characteristics of the PMA accurately through numerical simulation is a time-consuming process, a multi-objective optimization (MOO) algorithm based on surrogate modeling technique and adaptive samples adding strategy are proposed to reduce the workload of numerical simulations during optimization. Firstly, initial surrogate models are constructed and evaluated, and then iteratively updated to improve their global approximating abilities. Secondly, according to the approximate MOO results obtained by the global surrogate models, additional samples are added to constantly update the surrogate models to gradually improve the models’ local accuracies in optimal solution regions and finally guide the algorithm to the true Pareto front. The efficiency and accuracy of the proposed algorithm are verified by test functions. By applying the optimization strategy to the design of the proposed PMA, a set of satisfying Pareto optimal solutions, which improve the overall performance of the PMA obviously, can be derived at a reasonable computation cost.

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A Novel Flux Weakening Control Strategy for Permanent Magnet Actuator of Vacuum Circuit Breaker

Cited by 29 publications

References 17 publications

A Novel Breaking Strategy for Reduced Response Time of Electromagnetic Contactor by Reverse Voltage Application

A Novel Breaking Strategy for Reduced Response Time of Electromagnetic Contactor by Reverse Voltage Application

Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker

Multi-Objective Optimization of a Permanent Magnet Actuator for High Voltage Vacuum Circuit Breaker Based on Adaptive Surrogate Modeling Technique

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