Comparison study of rotor structures of doubly excited brushless reluctance machine by finite element analysis

1994 ◽  
Vol 9 (1) ◽  
pp. 165-172 ◽  
Author(s):  
Longya Xu ◽  
Yifan Tang ◽  
Lurong Ye
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Comparison Study ◽  
Element Analysis ◽  
Reluctance Machine ◽  
Doubly Excited

scholarly journals Comparison Study between Theoritical and Numerical Analyses for Ball Bearing

2021 ◽  
pp. 25-33
Author(s):  
Badr H. Bedairi ◽  
Ahmed B. Khoshaim ◽  
Badr S. Azzam
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Ball Bearing ◽  
Numerical Study ◽  
Comparison Study ◽  
Element Analysis ◽  
Initiation Point ◽  
Rolling Elements ◽  
The Difference ◽  
Critical Zones

In this paper, a comparison study has been presented to see the difference between the theoretical and finite element analysis for ball bearing. Throughout that study, a finite element analysis is performed to determine the maximum contact pressure and maximum stresses induced in the bearing components; rolling elements and rings. Another purpose of this analysis is to validate the most critical zones in the bearing for knowing the scenario of generating this stress and pressure which enabling the specialists to determine the initiation point for failure in the bearing. The comparison between the results of the numerical study with theoretical one has showed the good agreement outputs of this numerical study. In addition, this analysis could give the displacements and deformations that raised in the bearing elements at the highest critical zones.

Design and Finite Element Analysis of a Novel Permanent Magnet Assisted Reluctance Synchronous Motor

2020 ◽  
Vol 35 (9) ◽  
pp. 1012-1021
Author(s):  
Xianming Deng ◽  
Ran Li ◽  
Lei Hao ◽  
Ankang Zhang ◽  
Junhong Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Harmonic Component ◽  
Optimization Method ◽  
Torque Ripple ◽  
Element Analysis ◽  
Reluctance Machine ◽  
Steady State Operation ◽  
Asymmetric Rotor

In this paper, a permanent magnet assisted synchronous reluctance machine (PMASRM) with optimized permanent magnet width and asymmetric rotor structure is proposed. A typical PMASRM is selected as the reference motor (Pre-optimized PMASRM). In order to reduce the large torque ripple of conventional PMASRM, an optimization method to design the permanent magnet width is investigated and the Optimized Magnet-width PMASRM is proposed. On this basis, an asymmetric flux barriers structure is proposed to further reduce the torque ripple. Some electromagnetic characteristics including air-gap flux density, no-load back EMF and motor efficiency are examined by Finite Element Analysis (FEA). The simulation results show that the proposed PMASRM can not only decrease the harmonic component of no-load back EMF obviously, but also reduce the torque ripple in steady-state operation, which proves the rationality of the motor structure.

Sign in / Sign up

Export Citation Format

Share Document