Results 161 to 170 of about 50,552 (208)
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2018
For large synchronous machines, the excitation is usually provided by a DC-fed field winding in the rotor. For small synchronous machines, however, this is undesirable, on the one hand because of the complications for supplying DC to the rotor (i.e. slip rings, rectifier), on the other hand because the smaller the dimensions, the less efficient a field
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For large synchronous machines, the excitation is usually provided by a DC-fed field winding in the rotor. For small synchronous machines, however, this is undesirable, on the one hand because of the complications for supplying DC to the rotor (i.e. slip rings, rectifier), on the other hand because the smaller the dimensions, the less efficient a field
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1973
The synchronous motor has found application where a precise constant speed drive was required and especially where a number of machines must run in synchronism. A typical example is in textile mills. Disadvantages such as double excitation (an a. c. armature winding and a d. c.
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The synchronous motor has found application where a precise constant speed drive was required and especially where a number of machines must run in synchronism. A typical example is in textile mills. Disadvantages such as double excitation (an a. c. armature winding and a d. c.
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1996
A synchronous linear motor with a primary component having a winding and a secondary component consisting of an elongated bearing plate to which the pre-magnetised permanent magnets, consisting of brittle and corrosion-prone material, are firmly adhesively secured while maintaining the pole pitch grid.
KRAUSS MAFFEI AG, STOIBER DIETMAR
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A synchronous linear motor with a primary component having a winding and a secondary component consisting of an elongated bearing plate to which the pre-magnetised permanent magnets, consisting of brittle and corrosion-prone material, are firmly adhesively secured while maintaining the pole pitch grid.
KRAUSS MAFFEI AG, STOIBER DIETMAR
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Synchronous Converters and Motor-Generators
Transactions of the American Institute of Electrical Engineers, 1905At the present time the alternating-current motor in a motor-generator set of 100-kw. capacity or more is practically always a synchronous motor; an induction motor is rarely used for this purpose. The reason for this is threefold: the lagging current taken by an induction motor makes the motor undesirable at the end of a long line; from an operating ...
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Permanent magnet synchronous motors
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2008PurposeThis paper aims to apply a two‐axis model for accurate representation of the characteristics of permanent magnet synchronous motors (PMSM) of the interior type.Design/methodology/approachFor a three‐phase PMSM, it uses a voltage source inverter with six power transistors with independent switching and PSIM software with Matlab for checking, by ...
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Linear Synchronous Motor Design
IEEE International Conference on Electric Machines and Drives, 2005., 2005This paper provides a high level discussion of the design and application of linear synchronous motors. Design issues include field magnets, stator winding, power electronics, position sensing and control, mechanical structure, and cost.
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Induction-type synchronous motors
Journal of the Institution of Electrical Engineers, 1922The induction-type synchronous motor is a polyphase motor and has a cylindrical rotor. It is started as an induction motor of the slip-ring type and synchronizes itself when direct current is switched into the rotor.The characteristics and construction of this type of motor are compared with those of other polyphase motors.The self-synchronizing ...
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
Motors. Linear synchronous motors investigated
Electronics and Power, 1977W. Farrer, R. Davis
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