Results 241 to 250 of about 83,304 (314)

Analytical and FE Modeling of a Wound Rotor Induction Motor with Static Inclined Eccentricity

European Conference on Cognitive Ergonomics
This paper models both analytically and using finite element analysis (FEA), a prevalent mechanical fault in wound rotor induction motors (WRIMs). Variations in air gap length axially and circumferentially result in inclined eccentricity, a condition ...
S. S. Shiekh, Pragasen Pillay
semanticscholar   +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
openaire   +1 more source

Brush Lifting Systems for Wound Rotor Induction Motors

2018 International Conference on Applied and Theoretical Electricity (ICATE), 2018
The industrial processing equipment operates with high starting torque due to inertial load. Typically, these applications use wound rotor induction motors. To ensure a high starting torque for a limited input current, these motors are started with a rheostat connected with the rotor winding. The paper presents for the first time a new system for short-
Adrian Vintila, Fevronia-Despina Roman
openaire   +1 more source

Control of the Torque and Rotor Power in a Five-Phase Wound-Rotor Induction Motor Drive for Rotary Assembly Platforms

International Conference on Electrical Machines, 2020
This paper illustrates the control system of a five-phase wound-rotor induction machine that can be used in applications where, besides the torque generation, a certain amount of active power must be transferred to loads collocated on the rotor frame ...
G. Rizzoli, M. Mengoni, G. Sala, L. Zarri, A. Tani   +4 more
semanticscholar   +1 more source

Brush lifting system for wound rotor induction motors

2011 IEEE-IAS/PCA 53rd Cement Industry Technical Conference, 2011
Wound Rotor Induction Motors have the rotor windings connected to an external resistance through a brush/slip ring assembly. When the brushes are in continuous contact with the slip rings during normal operation of the motor, the brushes and the slip rings experience premature wearing. This leads to frequent stops for maintenance and brush replacements.
Radha Krishna Darbha, Nelson Kawasaki, Cornelis Poel, Filho Joao Coluci   +3 more
openaire   +1 more source

Losseless Starting Method For The Wound Rotor Induction Motor

ECMS 2012 Proceedings edited by: K. G. Troitzsch, M. Moehring, U. Lotzmann, 2012
In heavy duty drives in the range of hundreds kW, like cement and minerals industries, wound rotor induction motors are used. Important users make use of hundred of such drives, summing hundreds of MW. This type of motors have technical capabilities to easily operate at variable speed.
Sergiu Ivanov, Mihai Radulescu
openaire   +1 more source

Design and analysis of a novel wound rotor for a bearingless induction motor

International Journal of Electronics, 2019
The traditional squirrel-type bearingless induction motor (BIM) suspension winding generates induced current in its squirrel-cage rotor and affects the phase and amplitude of the suspension force.
Zebin Yang, Qifeng Ding, Xiaodong Sun, Jialei Ji, Q. Zhao   +4 more
semanticscholar   +1 more source

Hybrid speed-control system of wound-rotor induction motor

Proceedings of the Institution of Electrical Engineers, 1979
A new speed-control system suitable for a wound-rotor induction motor is introduced. This system is a combination of two schemes: primary voltage control by means of bias voltage control and Scherbius control. The performance characteristics of the system are obtained and compared for the two types of speed control (new speed control system against ...
V. Pavlov, H. Okitsu, T. Suzuki, T. Ohnishi   +3 more
openaire   +1 more source

High-Torque Density Magnet-Assisted Wound Field Motor using a Field-Unit-Type Rotor

International Conference on Electrical Machines, 2022
This study presents a novel rotor structure for a magnet-assisted wound field motor. In the proposed motor, the field coil, bobbin, and pole piece are integrated to form field units, which are inserted into the rotor core from the axial direction.
Y. Hidaka
semanticscholar   +1 more source

Torque Improvement of Magnet-Assisted Wound Field Motor With Field Unit Type Rotor

IEEE transactions on industry applications
This article presents a novel magnet-assisted wound field motor with a field-unit-type rotor. In conventional magnet-assisted wound field motors, the rotor core cannot be placed on the q-axis to pass through the winding nozzle.
Y. Hidaka
semanticscholar   +1 more source