Results 21 to 30 of about 21,643 (304)

Multi-pole voltage source converter HVDC transmission systems [PDF]

, 2016
This study connects several modular multilevel converters to form multi-pole voltage source converter highvoltage dc (VSC-HVDC) links which are suited for bulk power evacuation, with increased resiliency to ac and dc network faults.
Ased, Grain Philip, Williams, Barry W.
core   +1 more source

Research on the Control Method of the PV Grid-Connected Inverter under an Asymmetrical Power Grid Fault

Energies, 2023
The negative-sequence current component and harmonic components generated when an asymmetrical fault occurs in the power grid seriously affect the normal operation of the photovoltaic (PV) grid-connected inverter.
Shiji Tian, Min Lu, Ruikang Wang, Di’an Liu   +3 more
doaj   +1 more source

Fault and magmatic interaction within Iceland's western rift over the last 9kyr [PDF]

, 2003
We present high-resolution 'Chirp' sub-bottom profiler data from Thingvallavatn, a lake in Iceland's western rift zone. These data are combined with stratigraphic constraints from sediment cores to show that movement on normal faults since 9 ka are ...
A. I. Best, Alex, Haflidason, J. K. Dix, J. M. Bull, K. Thors, Kjartansson, N. C. Mitchell, Pollard, Rubin, Saemundsson, T. A. Minshull, Thors, Tryggvason   +13 more
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3D Transient Electromagnetic-Temperature Field Analysis of the Loss and Heat of the Damper Bars of a Large Tubular Hydro-Generator During Short Circuit Faults

IEEE Access, 2020
This paper studies a real 36-MW large tubular hydro-generator to solve the transient variation problem of the loss and heat of damper bars during short circuit faults in tubular hydro-generators.
Qing-Ling Hu, Ke Xiao, Zhi-Ting Zhou, Zhen-Nan Fan, Yong Yang, Zu-Ying Bian, Jing-Can Li, Bing Yao   +7 more
doaj   +1 more source

Coordinated Control of a Doubly-Fed Induction Generator-Based Wind Farm and a Static Synchronous Compensator for Low Voltage Ride-through Grid Code Compliance during Asymmetrical Grid Faults

Energies, 2013
This paper aims to explore a viable solution for a doubly-fed induction generator (DFIG)-based wind farm to meet the reactive support requirement of the low voltage ride-through (LVRT) grid code with safe grid-connected operation during asymmetrical grid
Hua Geng, Geng Yang, Zhong Zheng
doaj   +1 more source

IPM synchronous machine drive response to symmetrical and asymmetrical short circuit faults [PDF]

, 2003
Copyright © 2003 IEEEA closed-form solution is presented for the steady-state response of interior permanent magnet (IPM) synchronous machines to symmetrical short circuits including the effects of q-axis magnetic saturation.
Jahns, T., Nagashima, J., Soong, W., Welchko, B.   +3 more
core   +1 more source

Asymmetrical Fault Correction for the Sensitive Loads Using a Current Regulated Voltage Source Inverter

Energies, 2016
Numerous industrial applications involve loads that are very sensitive to electrical supply instabilities. These instances involve various types of voltage imbalances as well as more serious disturbances such as symmetrical and asymmetrical faults.
Syed Sabir Hussain Bukhari, Shahid Atiq, Thomas A. Lipo, Byung-il Kwon   +3 more
doaj   +1 more source

Multiphase induction motor drives - a technology status review [PDF]

, 2007
The area of multiphase variable-speed motor drives in general and multiphase induction motor drives in particular has experienced a substantial growth since the beginning of this century.
Abbas, Abolhassani, Andrese, Apsley, Atkinson, Bakhshai, Benatmane, Bendixen, Bojoi, Bojoi, Bojoi, Bojoi, Bojoi, Bojoi, Bojoi, Bojoi, Casadei, Coates, Correa, Correa, Corzine, de Silva, Dente, Duran, E. Levi, Edelson, F. Profumo, Farina, Ferraris, Ferreira, Figureoa, Gataric, Gerada, Golubev, Golubev, Golubev, Gopakumar, Gopakumar, Gritter, H.A. Toliyat, Hadiouche, Hadiouche, Hodge, Hou, Iqbal, Iqbal, Iqbal, Iqbal, Iqbal, Jacobina, Jacobina, Jacobina, Jacobina, Jahns, Jones, Jones, Jones, Jones, Jouanne, Kelly, Kestelyn, Kestelyn, Kestelyn, Kianinezhad, Klingshirn, Levi, Levi, Levi, Levi, Lipo, Locment, Lu, Lyra, Mantero, Mantero, McCoy, Mecrow, Merabtene, Miller, Miranda, Mitcham, Mohapatra, Mohapatra, Mokhtari, Monti, Nelson, Ojo, Oriti, Oudjebour, Parsa, Pereira, Pereira, R. Bojoi, Razik, Ryu, Ryu, S. Williamson, Semail, Semail, Shi, Siala, Silva, Singh, Smith, Smith, Steiner, Sudhoff, Takami, Terrien, Toliyat, Toliyat, Toliyat, Toliyat, Toliyat, Ward, Weh, Williamson, Xu, Xu, Zhao, Zhao, Zheng   +121 more
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Complex circular subsidence structures in tephra deposited on large blocks of ice: Varða tuff cone, Öræfajökull, Iceland [PDF]

, 2016
Several broadly circular structures up to 16 m in diameter, into which higher strata have sagged and locally collapsed, are present in a tephra outcrop on southwest Öræfajökull, southern Iceland.
A Geyer, A Hubbard, A Olszewski, A. J. Walker, AES Forbes, AJ Russell, B Brock, BC McDonald, BF Houghton, BN Whittaker, C Swithinbank, CH Okubo, D. W. McGarvie, E Magnússon, E Zanella, EP Holohan, FS Tweed, H Fay, H Norðdahl, H Tómasson, J Hauff, J Jónsson, J Martí, J. L. Smellie, JA Stevenson, JDL White, JE Cocksedge, JK Maizels, JK Maizels, JS Gilbert, JS Johnson, K Sharma, LO Krenek, MJ Branney, MJ Branney, MJ Branney, MJ Burke, O Roche, O Roche, PD Cole, PD Rowley, PM Marren, R Sulpizio, R. Burgess, RJ Brown, RJ Brown, RJ Carey, RME Thomas, S Burchardt, S Poppe, S Visale, SC Loughlin, TH Druitt, TR Walter, V Acocella, V Acocella, V Manville, V Zanon, WJ Russell, YK Sohn, YK Sohn, YK Sohn   +61 more
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Sliding Mode Control Based Supercapacitor Modeling for Dynamic Stability in DFIG Based Wind Turbines

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2022
The supercapacitor is among the elements commonly used to store energy as an important component in sustainable energy systems. In doubly fed induction generators (DFIGs), the supercapacitor is used to compensate voltage dips and damping oscillations. In
Uğur Güvenç, Enes Kaymaz, Mehmet Kenan Döşoğlu   +2 more
doaj   +1 more source