Results 151 to 160 of about 590,444 (192)
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Electromagnetic brake with controllable torque
Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1961MANY LARGE materials handling machines and processing machines require smooth, accurate stopping. In the past, accurate stopping has usually been accomplished by the use of hydraulic brakes. Recently, an electromagnetic brake has been developed to perform the same functions and to overcome some disadvantages of hydraulic brakes, such as the need for ...
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Electromagnetic Torque of Reluctance Magnetic Gear
2018 XIV International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE), 2018The paper deals with the studying of the torque producing mechanisms in reluctance type magnetic gear. The equation of magnetic conductivity and air-gap flux density are presented in the context of the electrical machines theory. The relationships for the reduction ratio and torque are obtained.
Aleksandr F. Shevchenko +4 more
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An electromagnetic variable-ratio torque convertor
Proceedings of the IEE Part A: Power Engineering, 1959The torque convertor differs radically from any other type known to be in commercial use. It depends for its operation upon the phenomenon exemplified in Faraday's disc and constitutes, theoretically, an ‘infinitely variable’ gear whose ratio can be varied over a wide range.This paper is limited to a brief description of the basic principles and some ...
D.O. Bishop, G.S. Brosan
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Analysis of electromagnetic torque of induction machines with the load torque changes suddenly
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014Since many Cascaded H-bridge multilevel (CHBML) inverters that are applied to drive high voltage machines can't transmit electric energy reversely, the electric energy transmitted from the machines may damage the inverters. This paper presents a transfer function to analyze the electromagnetic torque, when the load torque changes suddenly. Based on the
Xinjian Cai, Zhenxing Wu, Le Sun
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Electromagnetic torque on the toroidal plasma and the error-field induced torque
Nuclear Fusion, 2007The electromagnetic torque on the toroidal plasma is calculated assuming a linear plasma response to the applied perturbation, which may be the error field or the field created by the correction coils, or both. The result is compared with recently published expressions for the error field induced torque (Zheng et al 2006 Nucl.
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Electromagnetic Torque Analysis for All-Harmonic-Torque Permanent Magnet Synchronous Motor
IEEE Transactions on Magnetics, 2018This paper proposed a new type of permanent magnet synchronous motor (PMSM) called all-harmonic-torque PMSM (AHT-PMSM) to enhance the electromagnetic torque by using all harmonics of the magnetomotive force. The stator windings structure, drive converter configurations, and control model of the AHT-PMSM are illustrated.
Litao Dai, Huang Shoudao
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Design of Electromagnetic Torque Rods
1965Abstract : This report is a compilation of considerations involved in the design of electro-magnetic rods for satellite erection. Formulae are derived showing the effect of various choices of core and wire material and weight, number of cores, length of cores, number of turns per core, and wire area on the magnetic moment, hysteresis power, hold power,
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Force and Torque Production in Electromagnetic Circuits
2011In Chap. 6 inductors have been analyzed. In these devices there are no moving parts. In this chapter the force (\( {\vec{\hbox{F}}} \)) and torque (\( {\vec{\hbox{T}}} \)) production in electromagnetic circuits such as magnets, actuators, relays, linear and rotating machines will be discussed.
Ewald F. Fuchs, Mohammad A. S. Masoum
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Radiation torque on a birefringent sphere caused by an electromagnetic wave
Physical Review E, 2005We present an exact ab initio calculation of the optical torque on a spherical uniaxially birefringent particle of arbitrary size illuminated by plane electromagnetic wave of arbitrary polarization mode and direction of propagation. The calculation is based on the extended Mie theory and the Maxwell stress tensor formalism.
Mengkun, Liu +3 more
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Proposal for electromagnetic torque estimation
1999In this paper the proposal for electromagnetic torque estimation for AC slip-ring motor is inestigated. Basicaly, two methods are propsed: electromagnetic torgue estimation based on DC stator voltage and current values and electromagnetic torgue estimation based on the AC stator voltage and currents values.
Ferega, Davor +3 more
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