Results 51 to 60 of about 17,544 (307)

Investigation of Fault-Tolerant Control Strategy of Five-Phase Permanent Magnet Synchronous Generator for Enhancing Wind Turbines’ Reliability

Applied Sciences
Fault-tolerant strategies have received increasing attention recently, as reliability requirements have become more stringent. This has drawn significant attention to multiphase machines, due to their inherent fault-tolerance capabilities.
Abdulhakeem Alsaleem, Mutaz Alanazi
doaj   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

The Space Phasors Theory and the Conditions for the Correct Decoupling of Multiphase Machines

Machines
This paper first analyzes the general statements accepted in the technical literature concerning the complete dynamic decoupling of constant air-gap multiphase machines with space harmonics (usually resorting to the instantaneous symmetrical components ...
Luis Serrano-Iribarnegaray, Jorge Bonet-Jara   +1 more
doaj   +1 more source

Assessment of a Universal Reconfiguration-less Control Approach in Open-Phase Fault Operation for Multiphase Drives [PDF]

, 2019
Multiphase drives have been important in particular industry applications where reliability is a desired goal. The main reason for this is their inherent fault tolerance. Di erent nonlinear controllers that do not include modulation stages, like direct
Barrero, Federico, Bermúdez, Mario, Durán, Mario J., González Prieto, Ignacio, Salas Biedma, Pedro   +4 more
core   +2 more sources

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Asymmetrical six-phase induction motor drives based on Z-source inverters: Modulation, design, fault detection and tolerance

Alexandria Engineering Journal, 2022
Multiphase machines are becoming one of the mainstream research topics during the last decade, especially in high-reliability based systems. Among the different configurations of the multiphase machines, Asymmetrical Six-Phase Induction Motor (ASPIM ...
Rania Hammad, Sherif M. Dabour, Essam M. Rashad   +2 more
doaj   +1 more source

Parameter Estimation of Multiphase Machines Applicable to Variable Phase-Pole Machines

2022 International Conference on Electrical Machines (ICEM), 2022
Variable phase-pole machines are envisioned in applications requiring a large torque-speed operating area. The control of these machines relies on accurate models and parameters but research on parameter identification methods is scarce. This paper presents an offline parameter-identification method for variable phase-pole machines adopting a harmonic ...
Falk Olson, Gustaf, Peretti, Luca
openaire   +2 more sources

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

Machines, 2022
Multiphase machines are very convenient for applications that require high reliability. In this two-part survey, the state of the art about fault tolerance in multiphase drives is reviewed.
Alejandro G. Yepes, Ignacio Gonzalez-Prieto, Oscar Lopez, Mario J. Duran, Jesus Doval-Gandoy   +4 more
doaj   +1 more source

Overview of fast on-board integrated battery chargers for electric vehicles based on multiphase machines and power electronics [PDF]

The study provides an extensive overview of on-board integrated chargers for electric vehicles that are based on multiphase (more than three phases) machines and power electronics.
Boris Dumnic, Ching T.W., De Sousa L., Dragan Milicevic, Dumnic B., Dusmez S., E. Levi, Haghbin S., Iqbal A., Ivan Subotic, Lacressonniere F., Limongi L.R., Nandor Bodo, Sakr N., Subotic I., Subotic I., Subotic I., Subotic I., Subotic I., Subotic I., Subotic I., Vladimir Katic, Wu H.H., Yilmaz M., Yilmaz M., Zaja M.   +25 more
core   +1 more source