Results 171 to 180 of about 6,232 (214)

Stepless starting of wound-rotor induction motors

Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1962
This paper gives experimental and calculated speed-torque-current curves for a slip-ring induction motor with an automatically controlled secondary impedance to obtain stepless starting with low current, high sustained torque, and low full-load slip. A saturable reactor in the secondary circuit is supplied with a control current from a direct-connected
P. L. Alger, null Jalaluddin
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Sensorless Starting of Wound Rotor Synchronous Machines

2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), 2019
The sensorless operation of wound rotor synchronous machines (WRSM) must meet several requirements. The most important to be mentioned is how to insure starting at full load and then operating at low speed in the presence of magnetic saturation. This work presents a solution for high power machines by combining a method of rotor location by high ...
Maurice Fadel, Stephane Caux, Giovani Borghetti, Gianluca Postiglione   +3 more
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Helical Motion Wound-Rotor Resolver

IEEE Sensors Journal, 2022
F. Zare, Z. Nasiri-Gheidari
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On the wound-rotor induction machine control

1997 IEEE International Electric Machines and Drives Conference Record, 2002
The main goal of this paper is to present a new torque and speed control method of the wound rotor induction machine (WRIM) through the control of the voltage applied to the rotor winding. The method is based on the rotor voltage and current orientation using a converter cascade and a PI controller.
E.R. Filho, V.A.B. Sanchez
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An analytical design model for wound rotor synchronous machines

2013 IEEE Electric Ship Technologies Symposium (ESTS), 2013
Optimization-based design of electric machinery over a large design space requires the use of computationally efficient models to predict machine behavior. In this work, an analytical design model is developed for wound rotor synchronous machines (WRSMs), a key technology for power generation in marine applications.
Omar Laldin, Scott D. Sudhoff, Steven Pekarek   +2 more
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Durability of filament-wound composite flywheel rotors

Mechanics of Time-Dependent Materials, 2011
This paper predicts the durability of two types of flywheels, one assumes to fail in the radial direction and the other assumes to fail in the circumferential direction. The flywheel failing in the radial direction is a conventional filament-wound composite flywheel and the one failing in the circumferential direction is a tailor-made type.
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Dual-rotor, radial-flux, toroidally wound, permanent-magnet machines

IEEE Transactions on Industry Applications, 2003
A novel machine family-dual-rotor, radial-flux, toroidally wound, permanent-magnet (RFTPM) machines-is proposed in order to substantially improve machine torque density and efficiency. After the principles of operation, configurations, and features are discussed, the machine design and optimization guidelines are given.
null Ronghai Qu, T.A. Lipo
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Rotor inter-turn short circuit fault detection in wound rotor induction machines

The XIX International Conference on Electrical Machines - ICEM 2010, 2010
The aim of this paper is to develop a technique for detecting a real rotor inter-turn short-circuit fault in a wound rotor induction machine working as generator by using the spectral and the bispectral analysis. The stator currents provide interesting signatures since the rotor inter-turn short-circuit fault introduces new harmonics in the stator ...
A. Yazidi, H. Henao, G.A. Capolino, F. Betin   +3 more
openaire   +1 more source

Performance analysis of wound rotor induction motor subjected to rotor windings asymmetry

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016
The aim of this paper is to analyze the performance of 3-phase wound rotor induction motor (WRIM) under rotor windings asymmetry. The behavior of WRIM were simulated under healthy and asymmetry conditions. With the aid of simulation results, variation of motor speed, electromagnetic torque, stator and rotor currents have been analyzed.
R. R. Abdel-Wahab, T. M. Abdo, H. H. Hanafy   +2 more
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Static exciter for wound rotor induction machine

[Proceedings] IECON '90: 16th Annual Conference of IEEE Industrial Electronics Society, 2002
Possible techniques of self-exciting a wound rotor induction machine are discussed. A practical controller based on the slip energy recovery principle in the wound rotor machine is investigated and compared with conventional methods of self-exciting and squirrel cage machine.
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