Results 271 to 280 of about 71,479 (309)
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High-density permanent magnet machines
International Journal of Applied Electromagnetics and Mechanics, 2007This paper presents a novel permanent-magnet rotor for surface permanent magnet synchronous motors (SPMSM). In order to achieve larger power of SPMSM in limited volume as small as possible, use of a high-magnetic flux condition in designing is investigated.
Ikariga, Atsushi +3 more
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Permanent Magnet Machine Optimization
2003The paper presents electrical machine design considerations introduced by exploiting new magnetic material characteristics. The materials considered are amorphous alloy ribbons as well as Neodymium alloy permanent magnets involving very low eddy current losses.
Georgios D. Kalokiris +2 more
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Hybrid Permanent Magnet Machine Design
2021In this chapter, a HPM machine topology is selected and analyzed in more detail in terms of its machine geometry, excitation field technique, back-EMF per coil, back-EMF per phase, and developed electromagnetic torque for both no-load and on-load characteristic cases.
Ahmad S. Al-Adsani, Omid Beik
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1995
In permanent magnet excited rotating field machines the structure is broadly the same as the synchronous machine, i.e. there is a stator with the symmetrical three phase winding system and a rotor, which in this case has a permanent magnet instead of the excitation winding.
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In permanent magnet excited rotating field machines the structure is broadly the same as the synchronous machine, i.e. there is a stator with the symmetrical three phase winding system and a rotor, which in this case has a permanent magnet instead of the excitation winding.
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Flux Guides for Permanent-Magnet Machines
IEEE Power Engineering Review, 2001A study for the enhancement of effective flux of permanent magnet (PM) machines using flux guides is presented. An intrinsic demagnetization curve that considers the leakage flux is introduced. On the basis of a higher effective flux the stator winding can be more compact; consequently, a lighter stator and a higher efficiency PM machine can be ...
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Unbalanced Magnetic Pull in Permanent Magnet Machines
7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014), 2014The paper studies the unbalanced magnetic force due to rotor eccentricity in permanent magnet machines. An analytical technique is presented for predicting the magnetic field distribution in a non-uniform airgap and the resulting unbalanced magnetic pull caused by eccentricities. The method is based on a simple modification of a 2D analytical technique
M. Michon +3 more
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Permanent magnet synchronous machines
1983These Ecole polytechnique federale de Lausanne EPFL, n° 443 (1982)Laboratoire d'actionneurs integres Reference doi:10.5075/epfl-thesis-443Print copy in library catalog Record created on 2005-03-16, modified on 2017-05 ...
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Dynamic simulation of permanent magnet synchronous machine
Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521), 2004Electric drive is increasingly gaining in importance within the general ship propulsion system. Contemporary electric propulsion mainly contains a fixed propeller, a synchronous or asynchronous propulsion engine and PWM frequency converter with an adequate drive.
Jurić, Zdeslav +2 more
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Permanent Magnet Machines: Asychronous Operation
IEEE Transactions on Power Apparatus and Systems, 1980The permanent magnet motor operating at subsynchronous speeds, as during run-up, is treated with particular emphasis placed on the role that magnet excitation plays. The torque, during run-up, is separated into components called the "cage torque", the "magnet torque" and pulsating components of double-slip-frequency and single-slip-frequency. Equations
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High-Power-Factor Vernier Permanent-Magnet Machines
IEEE Transactions on Industry Applications, 2013Vernier permanent-magnet (VPM) machines are well known for high torque density but low power factor. This paper deals with the low power factor of VPM machines. The goal is not obtained by reducing the electrical loading or adjusting current advance angle but by proposing a novel vernier topology, i.e., a dual-stator spoke-array (DSSA) VPM topology. In
Dawei Li, Ronghai Qu, Thomas Lipo
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