scholarly journals The Impact of the Rotor Slot Number on the Behaviour of the Induction Motor

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Konstantinos N. Gyftakis ◽  
Joya Kappatou
Keyword(s):  
Magnetic Flux ◽  
Induction Motor ◽  
Flux Density ◽  
Magnetic Flux Density ◽  
Strong Impact ◽  
Stator Current ◽  
Time Harmonic ◽  
Geometrical Features ◽  
Electromagnetic Characteristics ◽  
The Impact

The impact of the rotor slot number selection on the induction motors is investigated. Firstly, analytical equations will reveal the spatial harmonic index of the air gap magnetic flux density, connected to the geometrical features and the saturation of the induction motor. Then, six motors with different rotor slot numbers are simulated and studied with FEM. The stator is identical in all motors. The motors are examined under time-harmonic analysis at starting and at 1440 rpm. Their electromagnetic characteristics, such as electromagnetic torque, stator current, and magnetic flux density, are extracted and compared to each other. The analysis will reveal that the proper rotor slot number selection has a strong impact on the induction motor performance.

scholarly journals Application of Wedges for the Reduction of the Space and Time-Dependent Harmonic Content in Squirrel-Cage Induction Motors

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Konstantinos N. Gyftakis ◽  
Panagiotis A. Panagiotou ◽  
Joya C. Kappatou
Keyword(s):  
Magnetic Flux ◽  
Induction Motor ◽  
Flux Density ◽  
High Harmonic ◽  
Air Gap ◽  
Time Dependent ◽  
Magnetic Flux Density ◽  
Iron Core ◽  
Harmonic Content ◽  
Electromagnetic Characteristics

The influence of the semimagnetic stator wedges of different sizes on the electromagnetic characteristics and the behavior of the induction motor is investigated. The study will be carried out with both analytical calculations and FEM analysis. The analytical calculations will take into account the stator and rotor slots, as well as the iron core saturation in order to study the spatial and time-dependent harmonic content of the air-gap magnetic flux density and electromagnetic torque. The size of the wedge plays an important role as it determines the tooth tips saturation, the high harmonic content of the air-gap magnetic flux density, and the electromagnetic characteristics of the induction motor.

scholarly journals Performance of Inductive Coupled Power Transfer Versus the Coil Shape - Investigation using Finite Element Analysis

2018 ◽  
Vol 225 ◽  
pp. 01017 ◽  
Author(s):  
Mohd Fakhizan Romlie ◽  
Kevin Lau ◽  
Mohd Zaifulrizal Zainol ◽  
Mohd Faris Abdullah ◽  
Ramani Kannan
Keyword(s):  
Magnetic Flux ◽  
Flux Density ◽  
Coupling Coefficient ◽  
Mutual Inductance ◽  
Magnetic Flux Density ◽  
Power Transfer ◽  
Element Analysis ◽  
Spiral Coil ◽  
The Impact ◽  
Coil Shape

The objective of this paper is to investigate the impact of the spiral coil shape of inductive coupled power transfer on its performance. The coil shapes evaluated are: circular, square and pentagon spiral shapes. The coils are modelled in Ansoft Maxwell software. Simulations are carried out to determine the mutual inductance, coupling coefficient and magnetic flux density. The performance in term of magnetic flux density, mutual inductance and coupling coefficient of the three coils shapes are compared. Of the three shapes, the pentagon is shown to have the best performance in term of its mutual inductance, coupling coefficient and magnetic flux density.

Leakage magnetic flux density in the vicinity of induction motor during operation

2009 ◽  
Vol 91 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Selim Koroglu ◽  
Ali Ahmed Adam ◽  
Nurettin Umurkan ◽  
Kayhan Gulez
Keyword(s):  
Magnetic Flux ◽  
Induction Motor ◽  
Flux Density ◽  
Magnetic Flux Density

scholarly journals Magnetic Flux Density Analysis of Cage Induction Motor Considering Magnetic Saturation by Permeance Model

2003 ◽  
Vol 123 (5) ◽  
pp. 547-553 ◽  
Author(s):  
Kazuo Nishihama ◽  
Hiroyuki Mikami ◽  
Kazumasa Ide ◽  
Miyoshi Takahashi ◽  
Tetsuo Fujigaki
Keyword(s):  
Magnetic Flux ◽  
Induction Motor ◽  
Flux Density ◽  
Magnetic Flux Density ◽  
Magnetic Saturation ◽  
Density Analysis ◽  
Cage Induction Motor

scholarly journals Enhancing performance for three-phase induction motor by changing the magnetic flux density and core material using COMSOL

2022 ◽  
Vol 12 (1) ◽  
pp. 62
Author(s):  
Firas Saaduldeen Ahmed ◽  
Zozan Saadallah Hussain ◽  
Truska Khalid Mohammed Salih
Keyword(s):  
Magnetic Flux ◽  
Induction Motor ◽  
Flux Density ◽  
Core Material ◽  
Magnetic Flux Density ◽  
Rotor Part ◽  
Squirrel Cage ◽  
Internal Characteristic ◽  
Three Phase ◽  
Cage Induction Motor

This paper presents a proposed design and analysis of a three-phase squirrel cage induction motor when changing of internal characteristic design for the three-phase induction motor. Two situations have been applied to enhancing the performance of the three-phase induction motor. The first situation has been implemented by changing the magnetic flux density (MFD) via the build of the six-phase for the same induction motor. The second situation has been implemented by changing core materials of the rotor part of the induction motor, like aluminum (AL) and cast iron (CI). The finite element method (FEM) has been used to analyze the rotor part, also to obtain the representation and simulation of the realty cylindrical rotor part of motor. The frequency domain (FD) analysis using to obtain the results within the environment of the COMSOL multiphysics 5.5 version.

scholarly journals THE ENVIRONMENTAL HYGIENIC ASSESSMENT OF THE ELECTROMAGNETIC SITUATION NEAR SANITARY PROTECTION ZONE OF POWER LINES

2018 ◽  
Vol 97 (2) ◽  
pp. 132-137
Author(s):  
O. A. Grigoriev ◽  
Yu. D. Gubernskiy ◽  
V. A. Alekseeva ◽  
A. S. Prokofyeva ◽  
Mikhail E. Goshin
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Flux Density ◽  
World Health ◽  
Power Lines ◽  
Magnetic Flux Density ◽  
Residential Areas ◽  
Epidemiological Surveys ◽  
Under Construction ◽  
The Impact

The article gives the review of criteria for the assessment of an electromagnetic situation near power lines. Settlement modeling has been executed and the actual data is characterizing a condition of the electric and magnetic field in the territory near power lines of 500 kV and 220 kV. The research of the impact of the power-frequency magnetic field from power lines in the apartments on the example of the building under construction located at distance of 60 m from the power line of 500 kV is reported. Values of the magnetic flux density at the borders of sanitary-protective zones of power lines were shown to meet Russian sanitary standards. At the same time outside this zone to the adjacent residential areas, there was fixed the excess in the performance of the magnetic flux density according to the standards recommended by the World Health Organization (WHO). The measurement of the magnetic flux density on different floors of the building under construction has shown that the maxima, recognized at floors 4 and 5 (0.3 mT) are on the border of the range recommended by the WHO; in case of the recalculation of these values on a maximum load of the line an obvious excess of the indices recommended by the WHO is observed. Thus, the area of the residential development in modern conditions may actually be located in the strip residential areas with uncertain criteria of the safety assessment, respectively, the population living in such conditions, is a potential contingent for epidemiological surveys on the program of the international electromagnetic WHO project.

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