A DC Hybrid Circuit Breaker With Ultra-Fast Contact Opening and Integrated Gate-Commutated Thyristors (IGCTs)

Meyer, Jean‐Marc; Rufer, A.

doi:10.1109/tpwrd.2006.870981

Cited by 323 publications

(115 citation statements)

References 3 publications

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“…Fig. 7 shows operating times of solid state (SSCB) [22,35], hybrid (HCB) [36,37] and electro-mechanical circuit breakers (EMCB) [38,39] in relation to a typical time to peak for fault currents within UAV and microgrid electrical networks (based on the values derived in section 2). Whilst the actual time taken for the fault current to reach its peak may vary, this specific example provides a good illustration of the impact upon the choice of circuit breaker technologies for the two applications.…”

Section: Implications For Circuit Breaker Technologiesmentioning

confidence: 99%

Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Fletcher

Norman

Galloway

et al. 2011

IET Electrical Systems in Transportation

105

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This version is available at https://strathprints.strath.ac.uk/33299/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the AbstractA growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators. The characteristic behaviour of these systems under electrical fault conditions, and in particular their natural response, can produce particularly demanding protection requirements. Whilst a number of protection methods for multi-terminal dc networks have been proposed in literature, these are not universally applicable and will not meet the specific protection challenges associated with the aerospace domain. Through extensive analysis, this paper seeks to determine the operating requirements of protection systems for compact dc networks proposed for future UAV applications, with particular emphasis on dealing with the issues of capacitive discharge in these compact networks. The capability of existing multi-terminal dc network protection methods and technologies are then assessed against these criteria in order to determine their suitability for UAV applications. Recommendations for best protection practice are then proposed and key inhibiting research challenges are discussed.

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Section: Implications For Circuit Breaker Technologiesmentioning

confidence: 99%

Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Fletcher

Norman

Galloway

et al. 2011

IET Electrical Systems in Transportation

105

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“…Meanwhile, After being widely surveyed and studied, in many industrial cases, within which high-speed switch mechanism and hybrid circuits are integrated, a novel compensatory approach is necessarily applied for acquiring fast dynamics [6,7]. What is more, it is not difficult to find in a large number of literatures concerning the modern control theory, detection technology, observer design, and intelligent optimization for improvement of DTC principle [8][9][10]. But most of the improvements still did not see clear progress.…”

Section: Introductionmentioning

confidence: 99%

Active Speed Compensation Method of Direct Torque Control System and Stability Analysis

Tong

Yang

2014

Advances in Mechanical Engineering

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By analyzing characteristics of the DTC (direct torque control) system in electrical driving system, a shortcoming of the classical DTC method is to point out that it is unable to decouple the mutual interference between torque and speed, so that when a running asynchronous motor subjected to an instantaneous impact load, rotor speed and its deviation appears excessive fluctuations that can not be quickly restored to the initial set value. In this research, under conditions that without sensors for measuring load torque and rotor speed, to an electrical drive systems contains DTC devices, a novel ASCC (active speed compensation control) method is proposed based on ADRC (active disturbance rejection control) theory, on account of DTC model of asynchronous motor, a multiobjective observer is designed to regulate both the speed and the torque, and a proof of asymptotic stability that related this new control systems with the observer is made by theoretical deduction. Finally stimulating results show that this method can overcome the shortcomings of classical DTC system and greatly enhance the ability of the high-speed driving system to deal with unexpected impact loads.

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“…The solid-state dc circuit breaker can achieve fast interruption time but at high capital cost and significant on-state operational losses due to the semiconductors in the main current path [6]. The hybrid dc circuit breaker has been proposed where a mechanical path serves as main conduction path with minimal losses during normal operation, and a parallel connected solid-state breaker is used for dc fault isolation [7][8][9]. However, it has relatively large footprint and its capital cost is still high.…”

mentioning

confidence: 99%

Hybrid Cascaded Modular Multilevel Converter With DC Fault Ride-Through Capability for the HVDC Transmission System

Adam

Holliday

et al. 2015

IEEE Trans. Power Delivery

113

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A DC Hybrid Circuit Breaker With Ultra-Fast Contact Opening and Integrated Gate-Commutated Thyristors (IGCTs)

Cited by 323 publications

References 3 publications

Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Active Speed Compensation Method of Direct Torque Control System and Stability Analysis

Hybrid Cascaded Modular Multilevel Converter With DC Fault Ride-Through Capability for the HVDC Transmission System

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