Bibliographies thématiques / Current capability

Littérature scientifique sur le sujet « Current capability »

Auteur : Grafiati

Publié le 4 mai 2024

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Articles de revues sur le sujet "Current capability":

Lumen, S. M. Sanzad, Ramani Kannan et Nor Zaihar Yahaya. « A new direct current circuit breaker with current regeneration capability ». International Journal of Power Electronics and Drive Systems (IJPEDS) 12, n^o 4 (1 décembre 2021) : 2322. http://dx.doi.org/10.11591/ijpeds.v12.i4.pp2322-2335.

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Direct current (DC) power systems are becoming very popular due to better control ability and equipment reliability thanks to the continuous development of power electronics. A DC circuit breaker (DCCB) used for current interruption in a DC network is a major part of the system. It plays the vital role of isolating networks during fault clearing as well as during normal load switching. Breaking the DC current is a major challenge as it does not have any natural zero crossing points like the AC current has. In addition, energy stored in the network inductances during normal operation opposes the instantaneous current breaking. Hence, all the conventional DC circuit breaker topologies use lossy elements to dissipate this stored energy as heat during the current breaking operation. However, it is possible to store this energy and reuse it later by developing an improvised topology. In this paper, the prospects of energy recovery and reuse in DC circuit breakers have been studied, and a new topology with regenerative current breaking capability has been proposed. This new topology can feed the stored energy of the network back into the same network after breaking the current and thus can improve the overall system efficiency.

Enjeti, P. N., P. D. Ziogas et J. F. Lindsay. « A current source PWM inverter with instantaneous current control capability ». IEEE Transactions on Industry Applications 27, n^o 3 (1991) : 582–88. http://dx.doi.org/10.1109/28.81845.

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Pakpour-Tabrizi, Alexander C., Shari Yosinski, Ralph Jennings-Moors, Zachary A. Kobos, Sonya D. Sawtelle, Mark A. Reed et Richard B. Jackman. « Diamond Nanowire Transistor with High Current Capability ». physica status solidi (a) 219, n^o 6 (19 janvier 2022) : 2100622. http://dx.doi.org/10.1002/pssa.202100622.

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Lieberman, Jeffrey A. « Treatment of Schizophrenia : Current Capability, Future Promise ». Psychiatric News 47, n^o 3 (3 février 2012) : 28. http://dx.doi.org/10.1176/pn.47.3.psychnews_47_3_28-a.

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Thakur, K. P., Z. Jiang, M. P. Staines, N. J. Long, R. A. Badcock et Ashish Raj. « Current carrying capability of HTS Roebel cable ». Physica C : Superconductivity 471, n^o 1-2 (janvier 2011) : 42–47. http://dx.doi.org/10.1016/j.physc.2010.11.001.

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Bourgault, D., S. Pavard, R. Tournier, L. Porcar, N. Caillault et L. Carbone. « Current limitation capability of bulk Bi2223 material ». Physica C : Superconductivity 372-376 (août 2002) : 1598–601. http://dx.doi.org/10.1016/s0921-4534(02)01081-x.

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Price, James. « HART communications : current capability and future options ». Journal of Paramedic Practice 7, n^o 3 (2 mars 2015) : 118–19. http://dx.doi.org/10.12968/jpar.2015.7.3.118.

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Groves, Keith. « Current forecasting capability at the Met Office ». Weather 59, n^o 11 (1 novembre 2004) : 295–98. http://dx.doi.org/10.1256/wea.126.04.

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Laoudias, C., et C. Psychalinos. « Differential voltage current controlled current conveyor with low-voltage operation capability ». International Journal of Electronics 101, n^o 7 (25 juin 2013) : 939–49. http://dx.doi.org/10.1080/00207217.2013.805360.

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Baik, Kwang-Hyun, et Sang-Ho Lee. « A Comparison Study between Current Capability and Required Capability of Managers in Business Incubator ». Journal of the Korea Academia-Industrial cooperation Society 12, n^o 5 (31 mai 2011) : 2142–48. http://dx.doi.org/10.5762/kais.2011.12.5.2142.

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Thèses sur le sujet "Current capability":

Kujiroaoka, Scott R., Russell G. Fielder et Alvia D. Sandberg. « Current Status of Adding GPS Tracking Capability to a Missile Telemetry Section ». International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606153.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California
Past presented papers have discussed the integration efforts of incorporating Central Test & Evaluation Investment Program (CTEIP) sponsored Joint Advanced Missile Instrumentation (JAMI) components (namely the JAMI TSPI Unit-JTU), Commercial off the Shelf (COTS) parts (e.g. ARTM Tier I SO-QPSK Transmitter, Encryptor and Thermal Battery), and in-house developed devices (such as PCM Encoder and Dual Band Antenna) into a five-inch diameter Missile Telemetry (TM) Section. A prototype of this TM Section has been built up and integrated into an All Up Round (AUR) Missile and twice flown as a Captive Carried Test Missile (CTM) on an F/A-18 jet with great success. This TM Section is in the process of undergoing flight qualification testing (including environmental and electro-magnetic interference-EMI tests). After which it will be ready for mass production. This paper will detail these current efforts. In addition, the effort to upgrade some Navy and Air Force Test Ranges (with JAMI Ground Stations and Decommutators/Demodulators) to track and gather data from this Missile containing the new TM section will be discussed. Future plans to incorporate Flight Termination System (FTS) capabilities into the TM section will be covered as well.

Hill, Owen J. « Aircraft modifications assessing the current state of Air Force aircraft modifications and the implications for future military capability / ». Santa Monica, CA : RAND, 2006. http://www.rand.org/pubs/rgsd_issertations/RGSD207/.

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Baburske, Roman. « Dynamik des Ladungsträgerplasmas während des Ausschaltens bipolarer Leistungsdioden ». Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-74615.

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Diese Arbeit beschäftigt sich mit dem besonders kritischen Ausschaltvorgang bipolarer Leistungsdioden, bei dem das im Durchlass vorhandene Ladungsträgerplasma abgebaut wird. Schwerpunkt ist dabei die Untersuchung von zwei ungewollten Phänomenen, die während des Ausschaltens auftreten können. Diese sind ein plötzliches Abreißen des Rückstroms während der Kommutierung und eine Zerstörung der Diode mit einem lokalen Aufschmelzen in der aktiven Fläche. Betrachtet wird dazu der Ladungsträgerberg, der sich während des Schaltvorgangs bildet. Durch die Analyse des Verhaltens der Ladungsträgerbergfronten, lässt sich sowohl der Einfluss von Schaltbedingungen auf den Plasmaabbau als auch der Unterschied von anodenseitigen und kathodenseitigen Stromfilamenten erklären. Die Erkenntnisse werden auf das moderne Diodenkonzept CIBH (Controlled Injection of Backside Holes) angewandt. Das Potential von CIBH-Dioden zur Verbesserung der Höhenstrahlfestigkeit und Stoßstromfestigkeit wird aufgezeigt. Schließlich wird das neue Anodenemitterkonzept IDEE (Inverse Injection Dependency of Emitter Efficiency) vorgestellt, welches in Kombination mit CIBH die Gesamteigenschaften von Dioden maßgeblich verbessert. Die aktuelle Version Dissertation_Roman_Baburske_2011_11_21.pdf ist um einige Tippfehler bereinigt
This work concerns the reverse-recovery process of bipolar power diodes. The focus is the investigation of two undesirable phenomena. These are the sudden strong reverse-current decay and the destruction of the diode with a local melting of the chip in the active area. The plasma layer, which arises during the switching period, is considered. An analysis of the plasma-layer front dynamics allows an understanding of the influence of switching parameters on the plasma extraction and the different behavior of anode-side and cathode-side filaments. The results of the analysis are used to describe the operation of the modern diode concept CIBH (Controlled Injection of Backside Holes). The potential of CIBH diodes to improve cosmic-ray stability and surge-current ruggedness is investigated. Finally, a new anode-emitter concept called IDEE (Inverse Injection Dependency of Emitter Efficiency) is introduced, which improves in combination with CIBH the overall performance of a power diode

Baburske, Roman. « Dynamik des Ladungsträgerplasmas während des Ausschaltens bipolarer Leistungsdioden ». Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2010. https://monarch.qucosa.de/id/qucosa%3A19578.

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Diese Arbeit beschäftigt sich mit dem besonders kritischen Ausschaltvorgang bipolarer Leistungsdioden, bei dem das im Durchlass vorhandene Ladungsträgerplasma abgebaut wird. Schwerpunkt ist dabei die Untersuchung von zwei ungewollten Phänomenen, die während des Ausschaltens auftreten können. Diese sind ein plötzliches Abreißen des Rückstroms während der Kommutierung und eine Zerstörung der Diode mit einem lokalen Aufschmelzen in der aktiven Fläche. Betrachtet wird dazu der Ladungsträgerberg, der sich während des Schaltvorgangs bildet. Durch die Analyse des Verhaltens der Ladungsträgerbergfronten, lässt sich sowohl der Einfluss von Schaltbedingungen auf den Plasmaabbau als auch der Unterschied von anodenseitigen und kathodenseitigen Stromfilamenten erklären. Die Erkenntnisse werden auf das moderne Diodenkonzept CIBH (Controlled Injection of Backside Holes) angewandt. Das Potential von CIBH-Dioden zur Verbesserung der Höhenstrahlfestigkeit und Stoßstromfestigkeit wird aufgezeigt. Schließlich wird das neue Anodenemitterkonzept IDEE (Inverse Injection Dependency of Emitter Efficiency) vorgestellt, welches in Kombination mit CIBH die Gesamteigenschaften von Dioden maßgeblich verbessert. Die aktuelle Version Dissertation_Roman_Baburske_2011_11_21.pdf ist um einige Tippfehler bereinigt.
This work concerns the reverse-recovery process of bipolar power diodes. The focus is the investigation of two undesirable phenomena. These are the sudden strong reverse-current decay and the destruction of the diode with a local melting of the chip in the active area. The plasma layer, which arises during the switching period, is considered. An analysis of the plasma-layer front dynamics allows an understanding of the influence of switching parameters on the plasma extraction and the different behavior of anode-side and cathode-side filaments. The results of the analysis are used to describe the operation of the modern diode concept CIBH (Controlled Injection of Backside Holes). The potential of CIBH diodes to improve cosmic-ray stability and surge-current ruggedness is investigated. Finally, a new anode-emitter concept called IDEE (Inverse Injection Dependency of Emitter Efficiency) is introduced, which improves in combination with CIBH the overall performance of a power diode.

Korejčík, Michal. « Návrh transformátoru s regulací fáze pro laboratorní výuku ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219412.

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This thesis deals with a power flow control in the electric power system. An overview of FACTS devices is introduced; their basic characteristics as well as examples of their application are discussed. A significant part of this thesis investigates phase shifting transformers (PST´s), which seem to be suitable for implementation in the transmission system of the Czech Republic. The PST´s are useful devices that control active power flows on cross-border lines and regulate unwanted and unexpected power flows. Basic types and characteristics of the PST´s are discussed. In chapter 7 is designed laboratory task that should validate the regulatory capabilities of the transformer PST. Designs of models of individual parts of this laboratory task are presented. In the last part of this thesis the regulation effect of the PST is validated in the GLF/AES program.

Pastore, Carine. « Evaluation de back-end of line optimisés pour les inductances intégrées en technologies CMOS et BiCMOS avancées visant les applications radiofréquences ». Phd thesis, Grenoble 1, 2009. http://www.theses.fr/2009GRE10081.

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Intégrées aux niveaux des interconnexions en technologies CMOS et BiCMOS, les inductances doivent répondre aux critères de fortes performances électriques, faible surface et/ou forts courants. Mais le défi n'est pas simple à relever. En effet, l'évolution du Back-End Of Line (BEOL) des technologies CMOS avancées et l'utilisation d'un substrat silicium à pertes tendent à dégrader fortement leurs performances. Ainsi, le développement de BEOL optimisés pour les inductances intégrées apparaît comme indispensable si on veut pouvoir répondre aux spécifications des circuits RF visés. Le principal objectif de cette thèse est de fournir des choix technologiques pour l'optimisation des inductances intégrées sur silicium, visant les applications dans la bande de fréquences de 1 à 5 GHz. Tout d'abord, une stratégie de gestion des inserts métalliques à l'échelle de l'inductance a été évaluée, afin de satisfaire les règles de densité imposées dans les technologies avancées (jusqu'au nœud technologique 32 nm). La volonté actuelle d'intégrer le module dédié à l'amplificateur de puissance en technologie CMOS a soulevé récemment la problématique de la gestion de forts courants (jusqu'à 1 A à 125°C) qui ne peut être adressée avec un BEOL standard. Un BEOL innovant utilisant deux niveaux de cuivre épais a été étudié en technologie CMOS 65 nm. Ce même BEOL a été évalué en technologie SOI. Cette dernière commence à émerger pour l'intégration du module d'émission complet en technologie CMOS de part sa compatibilité avec des substrats silicium Hautement Résistifs. L'optimisation d'inductances utilisant ce module double cuivre épais a été menée en technologie CMOS HR SOI 130 nm
Integrated in BEOL metallizations of CMOS or BiCMOS technologies, inductors have to meet requirements in terms of high electrical performances, low area and/or high current capability. However, this challenge is tricky to address. Actually, BEOL evolution and silicon substrate losses in Advanced CMOS technologies greatly decrease inductors' performances. Thus, the evaluation of optimized BEOL dedicated to the integration of inductors is essential if we want to target RF applications' specifications. The main objective of this thesis is to provide optimized technological solutions for inductors integrated in silicon technologies, and targeting RF applications in the 1 - 5 GHz frequency range. A dummy fill strategy has been evaluated at the scale of the device (without impacting its electrical performances) in order to fulfil metal density required in advanced technologies (down to the 32 nm node). Then, we have focused our attention on the evaluation of an optimized BEOL using a Double Thick Copper module in a 65 nm CMOS bulk technology. Actually, the wish to integrate the module dedicated to the power amplifier in CMOS technology has raised high current issues (up to 1 A @ 125°C), which is impossible to target with a standard BEOL. In the same trend, this optimized BEOL has been evaluated in SOI technology. Actually, this technology is starting to come up for the complete integration of the RF Front End module in CMOS technology thanks to its compatibility with HR silicon substrates which enables to integrate even more functions (antennas, diplexer, balun). Thus, inductor's optimization using a Double Thick Copper module has been performed in a 130 nm HR SOI CMOS technology

Mallangi, Siva Sai Reddy. « Low-Power Policies Based on DVFS for the MUSEIC v2 System-on-Chip ». Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229443.

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Multi functional health monitoring wearable devices are quite prominent these days. Usually these devices are battery-operated and consequently are limited by their battery life (from few hours to a few weeks depending on the application). Of late, it was realized that these devices, which are currently being operated at fixed voltage and frequency, are capable of operating at multiple voltages and frequencies. By switching these voltages and frequencies to lower values based upon power requirements, these devices can achieve tremendous benefits in the form of energy savings. Dynamic Voltage and Frequency Scaling (DVFS) techniques have proven to be handy in this situation for an efficient trade-off between energy and timely behavior. Within imec, wearable devices make use of the indigenously developed MUSEIC v2 (Multi Sensor Integrated circuit version 2.0). This system is optimized for efficient and accurate collection, processing, and transfer of data from multiple (health) sensors. MUSEIC v2 has limited means in controlling the voltage and frequency dynamically. In this thesis we explore how traditional DVFS techniques can be applied to the MUSEIC v2. Experiments were conducted to find out the optimum power modes to efficiently operate and also to scale up-down the supply voltage and frequency. Considering the overhead caused when switching voltage and frequency, transition analysis was also done. Real-time and non real-time benchmarks were implemented based on these techniques and their performance results were obtained and analyzed. In this process, several state of the art scheduling algorithms and scaling techniques were reviewed in identifying a suitable technique. Using our proposed scaling technique implementation, we have achieved 86.95% power reduction in average, in contrast to the conventional way of the MUSEIC v2 chip’s processor operating at a fixed voltage and frequency. Techniques that include light sleep and deep sleep mode were also studied and implemented, which tested the system’s capability in accommodating Dynamic Power Management (DPM) techniques that can achieve greater benefits. A novel approach for implementing the deep sleep mechanism was also proposed and found that it can obtain up to 71.54% power savings, when compared to a traditional way of executing deep sleep mode.
Nuförtiden så har multifunktionella bärbara hälsoenheter fått en betydande roll. Dessa enheter drivs vanligtvis av batterier och är därför begränsade av batteritiden (från ett par timmar till ett par veckor beroende på tillämpningen). På senaste tiden har det framkommit att dessa enheter som används vid en fast spänning och frekvens kan användas vid flera spänningar och frekvenser. Genom att byta till lägre spänning och frekvens på grund av effektbehov så kan enheterna få enorma fördelar när det kommer till energibesparing. Dynamisk skalning av spänning och frekvens-tekniker (såkallad Dynamic Voltage and Frequency Scaling, DVFS) har visat sig vara användbara i detta sammanhang för en effektiv avvägning mellan energi och beteende. Hos Imec så använder sig bärbara enheter av den internt utvecklade MUSEIC v2 (Multi Sensor Integrated circuit version 2.0). Systemet är optimerat för effektiv och korrekt insamling, bearbetning och överföring av data från flera (hälso) sensorer. MUSEIC v2 har begränsad möjlighet att styra spänningen och frekvensen dynamiskt. I detta examensarbete undersöker vi hur traditionella DVFS-tekniker kan appliceras på MUSEIC v2. Experiment utfördes för att ta reda på de optimala effektlägena och för att effektivt kunna styra och även skala upp matningsspänningen och frekvensen. Eftersom att ”overhead” skapades vid växling av spänning och frekvens gjordes också en övergångsanalys. Realtidsoch icke-realtidskalkyler genomfördes baserat på dessa tekniker och resultaten sammanställdes och analyserades. I denna process granskades flera toppmoderna schemaläggningsalgoritmer och skalningstekniker för att hitta en lämplig teknik. Genom att använda vår föreslagna skalningsteknikimplementering har vi uppnått 86,95% effektreduktion i jämförelse med det konventionella sättet att MUSEIC v2-chipets processor arbetar med en fast spänning och frekvens. Tekniker som inkluderar lätt sömn och djupt sömnläge studerades och implementerades, vilket testade systemets förmåga att tillgodose DPM-tekniker (Dynamic Power Management) som kan uppnå ännu större fördelar. En ny metod för att genomföra den djupa sömnmekanismen föreslogs också och enligt erhållna resultat så kan den ge upp till 71,54% lägre energiförbrukning jämfört med det traditionella sättet att implementera djupt sömnläge.

Kuo, Chung-Jen, et 郭仲仁. « A 13.56MHz Current-Mode Wireless Power Receiver With Energy-Investment Capability ». Thesis, 2018. http://ndltd.ncl.edu.tw/handle/p437he.

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碩士
國立臺灣大學
電子工程學研究所
106
For the development of the Internet of Things (IoT), wearable devices, and implantable medical devices, the wireless power transmission is receiving significant attention. In these applications, the external power from a transmitter is transmitted by the coils / antennas, and an AC voltage will be received in a wireless device. In the traditional wireless power transfer systems, the AC-DC conversion systems followed by the DC-DC conversion systems are used to generate an accurate voltage to safely charge a battery. Recently, the current-mode wireless power receivers are presented. By charging the battery with inductor current, the current-mode wireless power systems avoid rectification and voltage regulation. Therefore, the DC-DC conversion systems are spared and the PCE is improved. Also, the chip area and the off-chip components are reduced. This thesis presents a 13.56MHz current-mode wireless power receiver with energy-investment capability. When the system is in the charging mode, this work does not charge the output battery with all the power in the LC tank as the state-of-the-art systems do, this work reserves a fraction of energy stored as an investing voltage in the resonate capacitor instead. The investing voltage gives an initial voltage of the coil when this work finishes charging and starts to accumulate energy. The investing voltage increases the ability to grab energy from electromotive force (EMF). This work employs sample and holds circuits (SAHs) with low-frequency clocks to sample voltage and digital controlled delay lines (DCDLs) to control the switching timing of the power MOS. By this way, the operation frequency can be raised to 13.56MHz. High bandwidth circuits are avoided in the control circuits and power is saved. This work is fabricated in a 0.18-µm CMOS process and the active area is 0.341mm2. It achieves a peak PCE of 67.1% when the input power is 6mW.

Naderi, SB. « Improvement of fault ride through capability of wind turbines by fault current limiters ». Thesis, 2018. https://eprints.utas.edu.au/28601/1/Naderi_whole_thesis_ex_pub_mat.pdf.

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Due to increasing penetration levels of renewable energy in the power system, it is essential to keep renewable energy resources connected to the power grid during a fault considering the grid code requirements. In this thesis, the Fault Ride Through (FRT) capability of wind turbines is taken into account. All types of wind turbines are considered and for each one, the proposed methods will be discussed and studied. In the first approach for Fixed Speed Wind Turbines (FSWTs), to achieve maximum FRT capability, this thesis proposes a single-phase Optimum Resistive Type Fault Current Limiter (OR-FCL) as an efficient solution during various grid faults. A dedicated control circuit is designed for the OR-FCL that enables it to insert an optimum value of resistance in the FSWT’s fault current path for improving transient behaviour of the FSWT. The optimum resistance value depends on fault location and pre-fault active power. The control circuit of the proposed OR-FCL is capable of calculating the optimum resistance value for all the pre-fault conditions. By using the proposed control circuit, the FSWT can achieve its maximum FRT capability during symmetrical and asymmetrical faults, even at zero grid voltage. In the second approach for the FSWTs, to reduce the number of components, a three-phase Controllable Resistive Type Fault Current Limiter (CR-FCL), with the same operation of the OR-FCL, is investigated to improve the FRT capability of the FSWT. Fully and partially rated converter wind turbines and solar power systems utilise an inverter to connect to the grid. The inverters are vulnerable due to their damaging effects of voltage sags in their terminals on semi-conductor self-turnoff switches. In this thesis, a Bridge Type Fault Current Limiter (B-FCL) is proposed with simple control system for the FRT improvement of the inverters during different types of faults. The proposed B-FCL located, in Point of Common Coupling (PCC), is also capable of compensating for the voltage sag in the PCC and creates safe conditions not only for the inverter but also for any equipment which has been connected to the PCC in the power system. In the second approach, to analyse the FRT capability of inverter interfaced distributed generation, and to reduce the number of components, an FCL is placed in the DC link. This thesis proposes a DC Link Resistive Type Fault Current Limiter (DC-RFCL) based-voltage source inverter (VSI) for the FRT capability improvement, which is a new approach in the use of FCLs. Instead of using three-phase FCLs in the AC side of the VSI as in the first approach, just one single-phase proposed DC-RFCL is connected in series with the DC side of the VSI. Doubly fed induction generator (DFIG)-based wind turbines employ small-scale voltage sourced converters with a limited over-current withstand capability, which makes the DFIG-based wind turbines very vulnerable to grid faults. Often, modern DFIG systems employ a crowbar protection at the rotor circuit to protect the rotor side converter (RSC) during the grid faults. This method converts the DFIG to a squirrel cage induction generator, which does not comply with the new grid codes. The recent grid codes require wind turbines to stay connected to the utility grid during and after the power system faults, especially under high penetration levels of wind power. Furthermore, the crowbar switch is expensive. Therefore, in this thesis, the FRT capabilities of DFIG-based wind turbines are studied. To improve the FRT capability of the DFIG-based wind turbines, three approaches are proposed: a modified DC chopper, a non-controlled FCL and a DC link resistive type fault current limiter. In the first approach, the modified DC-link chopper is proposed in order to maintain both the DC link voltage and the high current level in the stator and the rotor sides in a permissible level, without incorporating any extra fault current limiting strategies. In the second approach for the FRT improvement of the DFIG-based wind turbine, a non-controlled fault current limiter is proposed. Co-operative operation of the chopper circuit and the non-controlled FCL, which is located in the rotor side of the DFIG, are studied. It is demonstrated that locating the proposed topology on the rotor side is effective from the leakage coefficient point of view, limiting transient over-currents rather than on the stator side. Furthermore, it is shown that, by obtaining an optimum non-superconducting inductance value, the rate of the fault current change is limited to lower than the maximum rates of current change in the semi-conductor switches of the DFIG’s converters during the fault. In the third approach for the FRT improvement of the DFIG-based wind turbine, this thesis proposes the application of the DC Link Resistive Type Fault Current Limiter (DC-RFCL) to improve the FRT capability of the DFIG. The proposed DC-RFCL is employed on the DC side of the RSC. The DC-RFCL solves crowbar protection activation problems and eliminates subsequent complications in the DFIG system. The proposed DC-RFCL does not have any significant impact on the overall performance of the DFIG during normal operation. The proposed approach is compared with the crowbar-based protection method. Simulation studies are carried out using PSCAD/EMTDC software. In addition, a prototype is provided to demonstrate the main concept of the proposed approach.

Lin, Xuan-Yong, et 林玄用. « AMOLED Driving Circuit with Subthreshold Current Compensating Capability for High PPI Display Panel ». Thesis, 2016. http://ndltd.ncl.edu.tw/handle/95442b.

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碩士
國立交通大學
光電工程研究所
104
In this paper, we present a [novel sentinel voltage control method] of external compensating driving circuit which could mainly be applied to the active-matrix organic light-emitting diode displays (AMOLED). The pixel driving current is gradually increased by the ramp voltage at gate and converted to voltage in real time. When the sensed voltage is equal to the sentinel voltage, the gate voltage stops changing. Thus, the gate voltage is pinched at the value corresponding to the target driving current. The pixel contains only three thin-film transistors (TFTs) and one capacitor, which is suitable for high PPI display. Owing to the small area of the high PPI pixel, the operation current of driving TFT may drop down to an extremely low level. However, this compensation circuit can work for low current level, even when the TFT is operated in the subthreshold where the current exponentially varies III with its gate voltage. Although the compensation circuit can be successfully operated, there are still some issue needs to solve when it works. Hence, we proposed an advanced version of this external compensation circuit in the following chapter. Regarding to different issue, we present multiply approaches to overcome them and make the circuit design complete. Thus, using these compensation circuit can conquer the operation difficulty of high PPI AMOLED and make external driver IC work simple by pinching off signal at expected value. Along with display panels in mobile devices, wearable devices, Augmented Reality (AR) products and Virtual Reality (VR) products being indispensable tools in recent years, these techniques are sure to be widely used.

Livres sur le sujet "Current capability":

Liang, Shan. Isolation and current handling capability issues in power integrated circuit design. Ottawa : National Library of Canada, 1990.

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Evans, R. W. Design guidelines for shielding effectiveness, current carrying capability, and the enhancement of conductivity of composite materials. Marshall Space Flight Center, Ala : National Aeronautics and Space Administration, [George C. Marshall Space Flight Center, 1997.

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IEEE Rotating Machinery Committee. et Institute of Electrical and Electronics Engineers., dir. IEEE trial-use recommended practice for the evaluation of the impulse voltage capability of insulation systems for AC electric machinery employing form-wound stator coils. New York, N.Y : The Institute of Electrical and Electronics Engineers, 1988.

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George C. Marshall Space Flight Center., dir. Design guidelines for shielding effectiveness, current carrying capability, and the enhancement of conductivity of composite materials : Under contract NAS8-39983. Marshall Space Flight Center, Ala : National Aeronautics and Space Administration, [George C. Marshall Space Flight Center, 1997.

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Avichal, Mehra, et United States. National Aeronautics and Space Administration., dir. Demonstration of a real time capability to produce tidal heights and currents for naval operational use : A case study for the west coast of Africa (Liberia). [Bay Saint Louis, Miss.] : Mississippi State University, Center for Air Sea Technology, 1996.

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Hick, Rod, et Tania Burchardt. Capability Deprivation. Sous la direction de David Brady et Linda M. Burton. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199914050.013.5.

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This article examines capability deprivation as the basis for analyzing poverty. The capability approach, developed initially by Amartya Sen, questions the “informational space” on which considerations of poverty, inequality, justice, and so forth, should be based. According to the capability approach, the appropriate “space” for analyzing poverty is not what people have, nor how they feel, but what they can do and be. After providing an overview of the concepts that comprise the capability approach, this article discusses three key questions within the literature regarding the nature of the approach, namely: the question of functioning and/or capabilities, the question of a capability list, and the question of aggregation. It also describes some prominent empirical applications that have been inspired by the capability approach and concludes with an assessment of the current state-of-the-art literature on the capability approach.

Current wind tunnel capability and planned improvements at Lewis Research Center. [Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, 1986.

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Operating capability and current status of the reactivated NASA Lewis Research Center hypersonic tunnel facility. [Washington, DC] : National Aeronautics and Space Administration, 1995.

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National Aeronautics and Space Administration (NASA) Staff. Design Guidelines for Shielding Effectiveness, Current Carrying Capability, and the Enhancement of Conductivity of Composite Materials. Independently Published, 2018.

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Alkire, Sabina. The Capability Approach and Well-Being Measurement for Public Policy. Sous la direction de Matthew D. Adler et Marc Fleurbaey. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199325818.013.18.

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This chapter presents Sen’s capability approach as a framework for well-being measurement with powerful and ongoing relevance to current work on measuring well-being in order to guide public policy. It discusses how preferences and values inform the relative weights across capabilities, then draws readers’ attention to measurement properties of multidimensional measures that have proven to be policy relevant in poverty reduction. It presents a dual-cutoff counting methodology that satisfies these properties and outlines the assumptions that must be fulfilled in order to interpret ensuing indices as measuring capability poverty. It then discusses Bhutan’s innovative extension of this methodology in the Gross National Happiness Index and reflects upon whether it might be suited to other contexts. It closes by responding at some length to relevant material in other Handbook chapters.

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Chapitres de livres sur le sujet "Current capability":

Kučera, Ĺuboš, Jakub Palenčár, Rudolf Palenčár, Stanislav Ďuriš, Ján Vachálek et Jan Rybář. « Monitoring of the Measurement Process Capability by Using Capability Indices ». Dans Current Methods of Construction Design, 327–32. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33146-7_37.

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Zhongguancun Listed Companies Assoc. « Report on Innovation Capability of ZLCs in 2019 ». Dans Current Chinese Economic Report Series, 81–94. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6908-5_4.

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Sheiko, Sergei S., et Martin Möller. « Hyperbranched Macromolecules : Soft Particles with Adjustable Shape and Persistent Motion Capability ». Dans Topics in Current Chemistry, 137–75. Berlin, Heidelberg : Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-44924-8_4.

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Becker, Pablo, Fernanda Papa et Luis Olsina. « Enhancing the Conceptual Framework Capability for a Measurement and Evaluation Strategy ». Dans Current Trends in Web Engineering, 104–16. Cham : Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-04244-2_11.

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Zhongguancun Listed Companies Assoc. « Report on Solvency and Operating Capability Analysis of ZLCs in 2019 ». Dans Current Chinese Economic Report Series, 57–79. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6908-5_3.

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Zhongguancun Listed Companies Assoc. « Report on Cash, Investment and Financing Capability of ZLCs in 2019 ». Dans Current Chinese Economic Report Series, 95–107. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6908-5_5.

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Zhongguancun Listed Companies Assoc. « Research Report on Innovation Capability of Zhongguancun NEEQ Listed Companies in 2019 ». Dans Current Chinese Economic Report Series, 41–49. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6819-4_3.

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Kaplinsky, Raphael. « Past Innovation Trajectories in Latin America and Current Innovation Trajectories in the Asian Driver Economies ». Dans Learning, Capability Building and Innovation for Development, 263–81. London : Palgrave Macmillan UK, 2013. http://dx.doi.org/10.1057/9781137306937_14.

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Zhongguancun Listed Companies Assoc. « Analysis of the Solvency and Operating Capability of Zhongguancun NEEQ Listed Companies in 2019 ». Dans Current Chinese Economic Report Series, 51–67. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6819-4_4.

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Yao, Mengyu, et Xueao Qiu. « A Current Flow Controller with Independent Regulation Capability for HVDC Grid ». Dans Lecture Notes in Electrical Engineering, 253–62. Singapore : Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-7393-4_24.

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Actes de conférences sur le sujet "Current capability":

Basler, Thomas, Josef Lutz, Roland Jakob et Thomas Bruckner. « Surge current capability of IGBTs ». Dans 2012 IEEE 9th International Multi-Conference on Systems, Signals and Devices (SSD). IEEE, 2012. http://dx.doi.org/10.1109/ssd.2012.6198072.

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Delbruck, Tobi, Raphael Berner, Patrick Lichtsteiner et Carlos Dualibe. « 32-bit Configurable bias current generator with sub-off-current capability ». Dans 2010 IEEE International Symposium on Circuits and Systems - ISCAS 2010. IEEE, 2010. http://dx.doi.org/10.1109/iscas.2010.5537475.

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Romheld, M., et W. Hartmann. « Impulse current withstand capability of coaxial cables in high current applications ». Dans 2008 IEEE International Power Modulators and High Voltage Conference. IEEE, 2008. http://dx.doi.org/10.1109/ipmc.2008.4743605.

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Jing Zhu, Weifeng Sun, Qinsong Qian, Lu Cao, Nailong He et Sen Zhang. « 700V thin SOI-LIGBT with high current capability ». Dans 2013 25th International Symposium on Power Semiconductor Devices & IC's (ISPSD). IEEE, 2013. http://dx.doi.org/10.1109/ispsd.2013.6694443.

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Mihaila, A., C. Liu, G. Romano, E. Bianda, S. Wirths, Y. Arango, L. Knoll, A. Baschnagel et B. Boksteen. « Surge current capability of 6.5kV-rated SiC MOSFETs ». Dans 2020 32nd International Symposium on Power Semiconductor Devices and ICs (ISPSD). IEEE, 2020. http://dx.doi.org/10.1109/ispsd46842.2020.9170186.

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Li, Yucen, Shuai Shao, Hui Chen, Junming Zhang et Kuang Sheng. « An IPOS LLC Converter with Current Sharing Capability ». Dans 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. http://dx.doi.org/10.1109/ecce.2019.8913290.

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Envia, Edmane, Daniel Tweedt, Richard Woodward, David Elliott, E. Fite, Christopher Hughes, Gary Podboy et Daniel Sutliff. « An Assessment of Current Fan Noise Prediction Capability ». Dans 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference). Reston, Virigina : American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-2991.

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null. « The German military current capability and future plans ». Dans IEE Colloquium on Military Satellite Communications II. IEE, 1997. http://dx.doi.org/10.1049/ic:19971067.

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Zhang, Xuning, Ehab Tarmoom, Ali Shahabi, Linda Starr et Dennis Meyer. « Avalanche Capability of SiC MOSFET Under High Current ». Dans 2023 IEEE 10th Workshop on Wide Bandgap Power Devices & Applications (WiPDA). IEEE, 2023. http://dx.doi.org/10.1109/wipda58524.2023.10382217.

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Orikawa, Koji, Naoki Murakami et Satoshi Ogasawara. « Increasing Current Capability of Air-Core Planar Inductors Capable of Suppressing Eddy Currents ». Dans 2023 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2023. http://dx.doi.org/10.1109/ecce53617.2023.10362037.

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Rapports d'organisations sur le sujet "Current capability":

Peurrung, Anthony J., et Richard A. Craig. Bubble Radiation Detection : Current and Future Capability. Office of Scientific and Technical Information (OSTI), novembre 1999. http://dx.doi.org/10.2172/15001056.

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AJ Peurrung et RA Craig. Bubble Radiation Detection : Current and Future Capability. Office of Scientific and Technical Information (OSTI), novembre 1999. http://dx.doi.org/10.2172/14663.

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Herd, Walter M. Current Unconventional Warfare Capability Versus Future War Requirements. Fort Belvoir, VA : Defense Technical Information Center, avril 2002. http://dx.doi.org/10.21236/ada402022.

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Benbow, Robert, Fred Ensminger, Peter Swartz, Scott Savitz et Dan Stimpson. Renewal of Navy's Riverine Capability : A Preliminary Examination of Past, Current and Future Capabilities. Fort Belvoir, VA : Defense Technical Information Center, mars 2006. http://dx.doi.org/10.21236/ada447820.

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Hopper, Darrel G. 1000 X Difference Between Current Displays and Capability of Human Visual System : Payoff Potential for Affordable Defense Systems. Fort Belvoir, VA : Defense Technical Information Center, janvier 2000. http://dx.doi.org/10.21236/ada430165.

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Moore, Brian D. Fighter Maintenance and Total Force Integration : Current Active Duty Manpower Implementation Practices and the Impact on Deployment Capability. Fort Belvoir, VA : Defense Technical Information Center, avril 2009. http://dx.doi.org/10.21236/ada540126.

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Caldwell, John F. Forced Entry : Does the Current Airborne Division Still Retain This Capability Under the Light Infantry Tables of Organization and Equipment ? Fort Belvoir, VA : Defense Technical Information Center, septembre 1987. http://dx.doi.org/10.21236/ada179595.

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Streile, G. P., et C. S. Simmons. Subsurface flow and transport of organic chemicals : an assessment of current modeling capability and priority directions for future research (1987-1995). Office of Scientific and Technical Information (OSTI), septembre 1986. http://dx.doi.org/10.2172/5099142.

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Gao, Krishnamurthy et McNealy. L52313 Performance Improvements of Current ILI Technologies for Mechanical Damage Detection Phase 2. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), juillet 2009. http://dx.doi.org/10.55274/r0010681.

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This final report provides a comprehensive and in-depth review of the current status of in-line inspection technologies including, but not limited to, Magnetic (Axial MFL, Circumferential MFL), and Geometrical (Caliper) methods in terms of their capabilities, limitations and potentials in detection, discrimination and characterization of various forms of pipeline mechanical damage, such as dents, dents with corrosion, and dents with cracks, gouges and dents with gouges. Capabilities of current technologies presented herein are based on validation data supplied by PRCI members. This report reviews and summarizes research regarding the capabilities of current in-line inspection (ILI) based technologies for the detection and discrimination of mechanical damage conducted by Blade Energy Partners in cooperation with participating ILI vendors and PRCI member pipeline operators. This research was conducted in two phases. The first identified the current deployed ILI technologies, vendor claims for capability and performance determination with validation data provided by the ILI vendors. Standardized performance measures were also developed and applied. The Phase I research was presented in an incomplete report, PR-328-063502-R01.

Nestleroth. L51657 Remote Field Eddy Current Detection of Stress-Corrosion Cracks - Phase II. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), janvier 1991. http://dx.doi.org/10.55274/r0010619.

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Stress-corrosion cracking (SCC) can occur in gas transmission pipelines. These cracks initiate on the exterior of the bulk pipe material and grow in the axial and radial direction. Access for comprehensive nondestructive inspection systems is generally limited to inside the pipe itself. Since these defects can lead to leaks and failures, a need of the gas pipeline industry is the in-line detection and characterization of stress-corrosion cracks. Previous research has shown the remote field eddy current (RFEC) technique can detect SCC in gas transmission lines. The objective of this program is to quantify the SCC detection and characterization capability of this technique. The internal nature of the RFEC technique identifies it as a potential candidate for in-line inspection. The through-transmission nature of RFEC technique is a major advantage over other nondestructive tests since it ensures the complete inspection of the entire pipe wall. This electromagnetic inspection technique requires no coupling agent to transmit inspection energy from a source, to the defect, and then to the sensor. If it can be shown that the RFEC technique is effective in detecting, identifying, and sizing SCC and other defects, the technique is a candidate for in-line inspection implementation.