Analysis of the magnetic field in a permanent-magnet motor, carried out by the finite element method

1989 ◽  
Vol 72 (1) ◽  
pp. 1-5 ◽  
Author(s):  
V. N. Savov ◽  
Zh. D. Georgiev ◽  
E. S. Bogdanov
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Permanent Magnet ◽  
The Finite Element Method ◽  
Permanent Magnet Motor ◽  
The Magnetic Field ◽  
Element Method

scholarly journals Static force characteristics of electromagnetic actuators for Braille screen

2011 ◽  
Vol 24 (2) ◽  
pp. 157-167 ◽  
Author(s):  
Ivan Yatchev ◽  
Krastio Hinov ◽  
Iosko Balabozov ◽  
Kristina Krasteva
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Permanent Magnet ◽  
Static Force ◽  
The Finite Element Method ◽  
Electromagnetic Actuators ◽  
Minimum Force ◽  
The Magnetic Field ◽  
Force Characteristics

Several constructions of electromagnetic actuators with moving permanent magnet for Braille screen are studied. All they are formed from a basic one that consists of two coils, core and moving permanent magnet. The finite element method is used for modeling of the magnetic field and for obtaining the electromagnetic force acting on the mover. The static force-stroke characteristics are obtained for four different constructions of the actuator. The constructions with ferromagnetic disc between the coils ensure greater force than the ones without disc and can reach the required minimum force.

Modeling and Design Optimization of Contactless Sliding Transformer System for Ropeless Elevators

2013 ◽  
Vol 416-417 ◽  
pp. 264-269
Author(s):  
Pei Long Wang ◽  
Xiao Zhuo Xu ◽  
Bao Yu Du ◽  
Hai Chao Feng ◽  
Xu Dong Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Permanent Magnet ◽  
Power Transmission ◽  
Electrical Power ◽  
Coupling Coefficients ◽  
The Finite Element Method ◽  
The Magnetic Field ◽  
Load Conditions

In this paper, two novel topological structures of sliding transformer with ferromagnetic core applied in the Contactless Electrical Power Transmission (CEPT) system used for the ropeless elevator driven by moving-coil type Permanent Magnet Synchronous Linear Motor (PMLSM) have been proposed, and the magnetic field distribution is calculated and analyzed by the finite element method (FEM). According to the analysis results of the traditional E-E topology sliding transformer, much higher coupling coefficients of sliding transformers with proposed topologies have been obtained. Then, based on the magnetic distribution and the circuit model of system, the compensation capacitances have been calculated considering supply frequency and load conditions. Finally, the load characteristic of the system with compensation is also obtained by FEM.

scholarly journals The numeric evaluation of the magnetic field produced by a rotor with alternating poles

2005 ◽  
Vol 2 (2) ◽  
pp. 181-188
Author(s):  
Marian Greconici ◽  
Constantin Blaj ◽  
Barbu Nicoară
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Magnetic Fluid ◽  
The Finite Element Method ◽  
3D Fem ◽  
Hydrostatic Bearing ◽  
Magnetic Poles ◽  
The Magnetic Field ◽  
Element Method

The magnetic field produced by a rotor with alternating magnetic poles in a magnetic fluid hydrostatic bearing is numerically evaluated. There has been used a 3D program based on the finite element method (3D-FEM).

Design and Analysis of a Novel 2-D Permanent Magnet Array for Planar Actuator

2013 ◽  
Vol 416-417 ◽  
pp. 253-257
Author(s):  
Liang Guo ◽  
Hao Ding
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Magnetic Fields ◽  
Permanent Magnet ◽  
3D Finite Element ◽  
3D Finite Element Method ◽  
Magnetic Poles ◽  
The Magnetic Field ◽  
Element Method

A novel 2-D permanent magnet array for a planar actuator was proposed, in which the portion between adjacent magnetic poles was divided to four small rectangular solids. Magnetic fields of the permanent magnet array were analyzed systematically by 3D finite element method. The analysis results show that, compared with the well-known Halbach magnet array, the proposed array has higher permanent magnet utilization. Keeping the whole permanent magnet volume constant, the arrays with several improved structures were put forward. The magnetic field analyze results prove that the utilization is best, when the ratio between the height of the magnetic poles magnetized vertically and the height of the portion magnetized horizontally is about 2.

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