Results 261 to 270 of about 12,328 (314)

"Angle Switching'' of synchronous Motors

Transactions of the American Institute of Electrical Engineers, 1935
Commercial applications of ``angle switching'' of synchronous motors are given especial attention in this paper. ``Angle switching'' refers to a method of starting synchronous motors whereby the time of application of the excitation voltage with respect to the relative angular position of the field poles and the impressed voltage is controlled.
C. C. Shutt, J. W. Dawson
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Synchronous motors for ship propulsion

Journal of the American Institute of Electrical Engineers, 1921
SINCE the inception and development of the idea of electric ship propulsion, the question of the possibility of using synchronous motors for such service has often been raised. Such a motor could be designed for unity power factor with a resulting saving in cost, weight, and efficiency, of both motor and generator.
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Output control of synchronous motors

Proceedings of the 37th IEEE Conference on Decision and Control (Cat. No.98CH36171), 2002
A dynamic controller is derived for a synchronous motor in the case of angular position tracking, when inertia, friction coefficient, resistant torque and stator resistance are unknown or slowly varying. Moreover, we suppose that the angular velocity is not measured and its numerical evaluation is unsatisfactory. Simulations are presented.
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Self-Excited Synchronous Motors

Transactions of the American Institute of Electrical Engineers, 1925
The theory and applications of self-excited synchronous motors have been repeatedly discussed in the literature, but the subject has been usually presented as a stutdy of some special variety of this type. It now seems timely to give an outline of the general theory of the subject as a basis of comparison of the proposed types and a starting point for ...
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Self starting synchronous motors

Proceedings of the American Institute of Electrical Engineers, 1912
The following treatment of the starting of synchronous motors is intended to apply to polyphase motors and has been worked out for those of the revolving field type, but can doubtless be so modified as to apply to motors of the revolving armature type as well.
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Starting Performance of Synchronous Motors

Transactions of the American Institute of Electrical Engineers, 1927
This paper deals with the theory underlying the starting performance of the salient-pole synchronous motor equipped with damper windings. The theory, while involving some approximations, is accurate enough for practical engineering calculations. Formulas are developed for the starting torque, pull-in torque and inrush.
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Synchronization of Reluctance Motors

IEEE Transactions on Power Apparatus and Systems, 1981
In most of control and industrial applications, a high degree of rotational stability and uniformity of speed is required. These requirements can be achieved by using reluctance motors. The synchronization process of such motors is of prime importance for these applications. Therefore, a simple and accurate criterion is developed to define this process.
Farouk I. Ahmed, S. E. Abo-Shady, K. F. Ali   +2 more
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Synchronous Converters and Motor-Generators

Transactions of the American Institute of Electrical Engineers, 1905
At 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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Synchronization and Controlling Chaos in a Permanent Magnet Synchronous Motor

Journal of Vibration and Control, 2010
In most situations, the high performance of permanent magnet synchronous motors (PMSMs) depends on an absence of chaos; consequently, suppressing chaos becomes quite important. Therefore, this study confirms the chaotic motion and then applies synchronization to a chaotic PMSM system to control chaos.
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Linear Synchronous Motors

1999
Topology and Selection Definitions, Geometry, and Thrust Generation Linear Synchronous Motor Topologies Calculation of Forces Linear Motion Selection of Linear Motors Materials and Construction Materials Laminated Ferromagnetic Cores Permanent Magnets Conductors Principles of Superconductivity Laminated Stacks Armature Windings of Slotted Cores ...
Jacek Gieras, Zbigniew Piech
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