Results 161 to 170 of about 74,445 (208)

Regelung eines Asynchron-Motors

1974
Aus der Darstellung der Betriebseigenschaften des Asynchronmotors geht hervor, das eine Anwendung als Regelantrieb mit weitem Drehzahlbereich die Verfugbarkeit eines ruhenden Drehstromerzeugers veranderlicher Frequenz mit einer genugenden Leistungsfahigkeit und hohem Wirkungsgrad voraussetzt.
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Instability Regions of Variable Frequency Supplied Asynchronous Motors

IFAC Proceedings Volumes, 1983
Abstract The paper tries to answer the question if and when unstable operations occur in practice in asynchronous motors supplied by variable frequency voltages. It is found and shown that unstable operating ranges are in practice greatly reduced in comparison with theoretical evaluations, obtained by simply considering the independent variation of ...
DEL PIZZO, ANDREA, GUIDOBALDI R., PAGANO E., PERFETTO, ALDO   +3 more
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PHASE ROTOR ASYNCHRONIC MOTOR CONNECTION SYSTEM

Mechanics and Technologies, 2022
Мақалада фазалық роторлы асинхронды қозғалтқыштағы ротор тоғын түзеткіш инвентор блогымен реттеу ұсынылған. Электр жетегі жүйесінде фазалық роторлы асинхронды қозғалтқыштың кедергісіз іске қосулуын қамтамасыз етіп, қажетті жылдамдықты және іске қосу моментінің тұрақтылығын реттеу мүмкіндігі қарастырылған.
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The asynchronous motor one-dimensional analysis

1997 IEEE International Electric Machines and Drives Conference Record, 2002
An application of the linear machine one-dimensional analysis method to the modeling of a conventional asynchronous induction motor, considered as a particular case of linear and sectorial machines, is described. A mathematical model for the calculation of the propulsive force developed by this motor, taking into account the transversal edge effect, is
G.A. Simone, R.C. Creppe, C.R. Souza
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Asynchronous performance of hysteresis motor

Journal of the Franklin Institute, 1975
Abstract A simplified model of the hysteresis motor is introduced and analyzed; field analysis is undertaken at hand of Maxwell's stress tensor and Poynting's theorem. The suggested approach provides deeper insight into the power interchange process between stator and rotor.
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Telemetry in diagnosis of asynchronous motors

2015 IEEE 5th International Conference on Power Engineering, Energy and Electrical Drives (POWERENG), 2015
To improve operational reliability of electrical machines over a long period of time, the diagnostic tests should be performed. This justifies the monitoring of machines, particularly those which do not have the reserve at the workplace: the power generators, hoisting machines in mines, etc.
Adam Decner, Tomasz Jarek
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Asynchronous reluctance motor using ferroresonance

Proceedings of the Institution of Electrical Engineers, 1967
This paper shows how asynchronous operation of a reluctance motor may be obtained by taking advantage of one of the properties of a series LCRcircuit, in which the inductance is a function of current. Parametric variation of the machine inductance is accomplished by variation of the rotor iron-circuit reluctance, instead of the more conventional change
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Asynchronous Motor Fault Detection Circuit Design

Advanced Science and Technology Letters, 2014
By analyzing the types, causes and the fault feature of common fault of squirrel-cage asynchronous motor, and based on the study of the principles and methods of fault detection of electromotor, the multi-channel electric power data acquisition system is designed, which can realize the online fault detection of motor.
Zongming Li, Baichao An, Haoyu Lu, Qiang Liu, Liying Yuan   +4 more
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Parasitic Torques of Saturised Asynchronous Motors

IEEE Transactions on Power Apparatus and Systems, 1972
The paper deals with the analysis of field harmonics in an asynchronous machine. It is proved that with increasing saturation of the magnetic circuit, the influence of the higher space harmonics on the field form is reduced. This causes reduction of the parasitic torques.
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Asynchronous motor protection against dynamic instabilities

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370), 2000
This paper deals with the dynamic behavior of the electric power system of a Venezuelan oil refinery (El Palito Refinery, Puerto Cabello, Venezuela), which includes a 6000-hp asynchronous motor working as a motor or generator (M/G) coupled to the power recovery unit (PRU) shaft at the fluidized catalytic cracking plant (FCC).
J. Martinez, C. Dortolina, H. Villamediana, W. Pena, J. Beuses   +4 more
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