Results 321 to 330 of about 108,858 (358)
Some of the next articles are maybe not open access.
Electrical instability in cardiac muscle: Phase singularities and rotors
Journal of Theoretical Biology, 1989A dynamical system is "excitable" at some stage in its behavior (e.g. at a rest state or while it is nearly at rest prior to a spontaneous event) if a small, but not too small, stimulus of the right kind elicits an immediate big reaction that eventually leads back to the original state.
openaire +3 more sources
2009 IEEE Power & Energy Society General Meeting, 2009
In this paper, decoupled control of rotor torque and rotor electric power in a reluctance wound rotor brushless doubly fed machine, (BDFM), is presented. The machine stator windings are fed from two separate voltage source inverters. The proposed control technique is applied to the inverters such that the BDFM is capable of producing mechanical torque ...
A. L. Mohamadein +4 more
openaire +2 more sources
In this paper, decoupled control of rotor torque and rotor electric power in a reluctance wound rotor brushless doubly fed machine, (BDFM), is presented. The machine stator windings are fed from two separate voltage source inverters. The proposed control technique is applied to the inverters such that the BDFM is capable of producing mechanical torque ...
A. L. Mohamadein +4 more
openaire +2 more sources
PERFORMANCE OF ELECTRIC MEDIUM-SIZED VARIABLE-RPM ROTOR AND SHROUDED ROTOR
2022Electric variable RPM rotors are increasingly being used for propulsion and control of unmanned air vehicles. As these vehicles scale to carry heavier payloads of 50 to 400 lbs (20 to 180 kgs) in the group 2 and 3 UAS category, there are concerns about their aerodynamic performance and handling quality degradation. Therefore, there is a need to develop
openaire +2 more sources
Rotor Position Sensor for Hybrid and Electric Drives
2013Electrification of the power train will play a key role in the struggle for higher energy efficiencies and reduced emissions of vehicles. Optimized control of modern electric motors requires precise measurement of the rotor position. Electricfil has developed an Electric Motor Position Sensor (EMPOS) that provides a number of advantages over ...
Rainer Moller, Olivier Brunel
openaire +2 more sources
Dual-Rotor Permanent Magnet Motor for Electric Superbike
2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019The demand on high-performance electrical machines has significantly increased for aerospace and transportation industries in recent years. A racing electric motorbike is a suitable platform to validate and prove new concepts and machine topologies before implementing them for passenger transportation applications.
David Gerada +5 more
openaire +2 more sources
Design and optimization of PMSM with outer rotor for electric vehicle
2015 IEEE 12th International Multi-Conference on Systems, Signals & Devices (SSD15), 2015In this paper, the importance of electrical machine was involved. So researches are oriented to make a progress in this domain. Permanent magnet synchronous machine (PMSM) is selected to be studied in this work. Two optimization methods are used in the design of the PMSM for the application of in wheel motor of electric cars.
Hafedh Trabelsi +3 more
openaire +2 more sources
Rotor Thermal Design for Electric Machines: Challenges and Opportunities
2018 IEEE Transportation Electrification Conference and Expo (ITEC), 2018As the power density of electric machines increases, rotor thermal analysis becomes critical as losses caused by higher fundamental frequencies increase. The rotor often has poor thermal communication with the stator cooling medium, and therefore alternative cooling methods may be required in high power density machines to maintain safe operating ...
William Sixel +2 more
openaire +2 more sources
Evaluation of Performance of an Electrical Generator with a Superconductor Element as Rotor
2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008This paper presents some results of a study to evaluate energy conversion potential of an innovative electrical generator, employing a YBCO superconductor thin film disk rotor. Creating a rate of change of flux in a magnetic field using the ldquoflux repulsionrdquo property of superconductors, an electrical generator is realized. Using ANSYS simulation
M. Safiuddin +3 more
openaire +2 more sources
Electrical actuation of a Rolling Rotor Switched Reluctance Motor
Proceedings of the 2011 34th International Spring Seminar on Electronics Technology (ISSE), 2011The electrical actuation of a Rolling Rotor Switched Reluctance Motor (RRSRM) depends on the application and the properties of the motor. The RRSRM is applied as a direct drive, because its rotation speed is rather slow [1]. These characteristics must be considered at the design of the electrical actuation.
Marco Franke +3 more
openaire +2 more sources
IEEE Transactions on Energy Conversion, 2016
Design routines for solid-rotor induction motors are usually based on two-dimensional finite element models. It is well known that these models take only approximate account of the rotor-end effect using a reduced value of physical conductivity, called the effective conductivity.
openaire +2 more sources
Design routines for solid-rotor induction motors are usually based on two-dimensional finite element models. It is well known that these models take only approximate account of the rotor-end effect using a reduced value of physical conductivity, called the effective conductivity.
openaire +2 more sources