Results 141 to 150 of about 285 (175)

Rotor torsional resonance detection in induction drives by MCSA focused on rotor slot harmonics

2017 AEIT International Annual Conference, 2017
Torsional resonances may incur in induction drives due to large harmonic torques produced by the inverter. The torsion can affect the rotor-load system, but more sneaky resonances may arise in the rotor end-rings of fabricated-cage induction motors. Abnormal cage torsions may lead to bar breakage due to high-cycle fatigue.
Bruzzese, C., Santini, E.
openaire   +2 more sources

Multi-phase Induction Machine Speed Estimation Method Using Rotor Slot Harmonics

IEEE EUROCON 2019 -18th International Conference on Smart Technologies, 2019
Multi-phase machines are becoming more popular due to their good performances and are progressively suppressing classical three-phase machines in some applications. Additionally, sensorless control of electrical machines has been thoroughly investigated in the last decades in order to lower the costs associated with the speed sensors used in electrical
Ivana Isakov, Veran Vasic, Dejan Jerkan, Dejan Reljic, Ivan Todorovic   +4 more
openaire   +1 more source

Slot permeance effects on rotor slot harmonics in induction machines

IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03., 2003
Induction machines form the backbone of a substantial portion of the adjustable speed drives' applications. Among the current estimation techniques available for speed-sensorless induction motor drives, speed measurement based on rotor slot harmonic (RSH) detection in machine line current happens to be a prominent one. The paper attempts to investigate
openaire   +1 more source

Modeling and estimation of slot harmonics in wound rotor induction machines

2016 XXII International Conference on Electrical Machines (ICEM), 2016
In this paper a novel method for modeling and simulation of a slot harmonics estimation model is presented. This model calculates only the harmonics due to the slotting and therefore can be easily added to an existing model of a wound rotor induction machine.
Robert Dimitrovski, Matthias Luther
openaire   +1 more source

Analytical investigation of rotor slot harmonics in a three phase induction motor with broken rotor bars

2005 European Conference on Power Electronics and Applications, 2005
The present paper attempts to investigate the effect of space distribution of rotor bars in squirrel cage induction machine on the generation of the rotor slot harmonics (RSH). An analytical expression of the stator current describing the necessary relationship between rotor bar and pole pairs numbers required for the presence of RSH has been developed.
A. Khezzar, M.Y. Kaikaa, M. Boucherma
openaire   +1 more source

Torque estimation using rotor slots harmonics on a three-phase induction motor

2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014
This work presents a new approach in order to estimate torque in an induction motor which drives a load without ever interrupting its operation. Rotor slot harmonics, that are present in the stator current of an induction motor with squirrel cage rotor, are applied to estimate the torque.
Wilton Lacerda Silva, Antonio Marcus Nogueira Lima, Amauri Oliveira   +2 more
openaire   +1 more source

The model of the squirrel cage AC Motor including rotor slot harmonics

2008 13th International Power Electronics and Motion Control Conference, 2008
The model of the squirrel cage AC Motor is based on multiple coupled circuits and takes into account the geometry and winding layout of the machine. All inductances are derived by means of the winding function approach and are integrated with the decomposition into their Fourier series. An important issue in such effort is the modeling of the induction
Eleonora Darie, Costin Cepisca, Emanuel Darie   +2 more
openaire   +1 more source

The Effect of Rotor Design on Rotor Slot Harmonics in Induction Machines

Electric Power Components and Systems, 2001
This paper looks at the effect of different rotor designs on rotor slot harmonics (RSH) in induction-motor, line-current, spectra. The magnitude and the frequency of the rotor slotting harmonics for a number of different rotor designs have been obtained experimentally to identify which of the motor design parameters have significant effect on these ...
openaire   +1 more source

Induction Motor Stator Fault Diagnosis by Rotor Slots Harmonics Tracking Using Prony Improved Approach

International Review of Automatic Control (IREACO), 2017
The short-circuit fault diagnosis is essential in order to avoid irreversible damages that could affect the stator circuit of the induction motor. For this purpose, this paper addresses a new approach based on Prony's high resolution spectral analysis method to avoid the drawbacks of the well-known method based on the power spectral density estimation ...
Mohamed Kouadria, Ahmed Hamida Boudinar, Azeddine Bendiabdellah, Noureddine Benouzza   +3 more
openaire   +1 more source

Reduction of electromagnetic force harmonics in asynchronous traction motor by changing rotor slot number

IEEE International Magnetics Conference, 1999
The harmonics in electromagnetic force are a source of mechanical vibration and audible noise in an asynchronous traction motor. This paper describes an approach to reduce the force harmonics by changing the rotor slot number. Both the radial and tangential forces acting on the stator teeth are calculated by Maxwell stress tensor and their time ...
null Byung-Taek Kim, null Byung-Il Kwon, null Seung-Chan Park   +2 more
openaire   +1 more source