STUDY OF COMPLEX ELECTROMAGNETIC FIELD USING HYBRID ISOPARAMETRIC FINITE ELEMENTS

2008 ◽  
Vol 22 (24) ◽  
pp. 2429-2434
Author(s):  
NIAN LIU ◽  
CHI XIE
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Work Conditions ◽  
Electromagnetic Properties ◽  
Specific Work ◽  
Electromagnetic Device ◽  
Isoparametric Finite Element ◽  
Isoparametric Finite Elements ◽  
Element Method

For complex electromagnetic fields in modern physics, a hybrid isoparametric finite element method (HIFEM) with high accuracy is introduced in the paper. The complex electromagnetic field in an electromagnetic device has been calculated successfully by the hybrid isoparametric finite element method (HIFEM) and the electromagnetic properties of the electromagnetic device under specific work conditions are evaluated. With the help of microcomputers, the electromagnetic simulation given in this paper is very useful in the analysis of operating properties under different work conditions and design of electromagnetic devices.

A HYBRID FINITE ELEMENT CALCULATION OF COMPLEX ELECTROMAGNETIC FIELDS

2008 ◽  
Vol 22 (04) ◽  
pp. 269-274 ◽  
Author(s):  
NIAN LIU ◽  
CHI XIE
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Fields ◽  
Electromagnetic Properties ◽  
Specific Work ◽  
Hybrid Finite Element Method ◽  
Hybrid Finite Element ◽  
Electromagnetic Device ◽  
Modern Physics ◽  
Element Method

In order to increase to a greater extent the calculation accuracy for complex electromagnetic fields in the modern physics, a hybrid finite element method (HFEM) is presented for analysis and simulation of complex electromagnetic fields. In the paper, the hybrid finite element method (HFEM) with high accuracy is introduced, and the complex electromagnetic field in an electromagnetic device has been calculated successfully by the hybrid finite element method (HFEM) and the electromagnetic properties of the electromagnetic device under the specific work condition is evaluated. It is shown that the method can provide a much more accurate calculation and good agreement between the computed values and the experimental values.

NEW FINITE ELEMENT METHOD OF ELECTROMAGNETIC CALCULATION FOR COMPLEX ELECTROMAGNETIC FIELDS

2007 ◽  
Vol 21 (11) ◽  
pp. 655-662 ◽  
Author(s):  
NIAN LIU ◽  
CHI XIE ◽  
YING LIU ◽  
LU LIU ◽  
KE-XUN JIANG
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Fields ◽  
Electromagnetic Properties ◽  
Specific Work ◽  
Electromagnetic Device ◽  
Modern Physics ◽  
Experimental Values ◽  
Computation Speed ◽  
Element Method

In order to increase greatly the calculation accuracy and the computation speed for complex electromagnetic fields in modern physics, a new finite element method, which has the high computation accuracy, fast computation speed and less computer storage requirements, is presented in this paper. The new method with a high-order finite element without internal nodes is introduced to compute and analyze some complex electromagnetic fields in the electron accelerators. In this paper, the complex electromagnetic field in an electromagnetic device has been calculated successfully by the finite elements, and the electromagnetic properties of the electromagnetic device under the specific work condition is analyzed and evaluated. Good agreement is found between the computed values and the experimental values.

scholarly journals Bearing Fault Analysis in Induction Motor Drives Using Finite Element Method

2018 ◽  
Vol 7 (3.6) ◽  
pp. 30 ◽  
Author(s):  
C Vinothraj ◽  
N Praveen Kumar ◽  
T B. Isha
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Induction Motor ◽  
Flux Density ◽  
Air Gap ◽  
Voltage Source ◽  
Pwm Inverter ◽  
Bearing Fault ◽  
Element Method

Diagnosis of faults in induction motor is an indispensable process in industries to improve the reliability of the machine and reduce the financial loss. Among the various faults occurring in induction motors (IM), bearing fault is the predominant one which covers nearly 60% of faults. In this paper, a study of the electromagnetic field of an induction motor with bearing fault fed from both the mains and a three phase voltage source PWM inverter in open loop is carried out using Finite element method (FEM). Electromagnetic field parameters like flux lines distribution, flux density distribution and radial air gapflux density are analyzed. The presence of bearing fault can be detected from the spatial FFT spectrum of radial air gap flux density. From the FFT spectrum, it is seen that the amplitude of fundamental component of radial air gap flux density decreases and those around 100 mm distance increases with the severity of fault.  

Computation on transient nonlinear electromagnetic field by an improved space-time finite element method

1999 ◽  
Vol 35 (3) ◽  
pp. 1426-1429 ◽  
Author(s):  
Tang Renyuan ◽  
Lin Feng ◽  
Guo Zhenhong ◽  
Li Yan ◽  
Ma Jianguo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Space Time ◽  
Element Method
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