Calculation and Verification of Magnetic Field Parameters in Axial Active Magnetic Bearing

2014 ◽  
Vol 214 ◽  
pp. 143-150
Author(s):  
Piotr Graca
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Magnetic Force ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Magnetic Flux Density ◽  
Two Dimensional ◽  
The Finite Element Method ◽  
Magnetic Field Computation

The paper presents numerical modeling of an Axial Active Magnetic Bearing (AAMB) based on two-dimensional (2D) magnetic field computation. The calculations, assisted by the Finite Element Method (FEM), have focused on the determination of the magnetic flux density and the magnetic force. Obtained magnetic field parameters were then measured and verified on a physical model.

The influence of the stator geometry on magnetic bearing parameters

2013 ◽  
Vol 62 (2) ◽  
pp. 209-215 ◽  
Author(s):  
Bronisław Tomczuk ◽  
Dawid Wajnert
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Magnetic Force ◽  
Magnetic Bearing ◽  
Current Gain ◽  
Maxwell Stress ◽  
The Finite Element Method ◽  
Tensor Method ◽  
Maxwell Stress Tensor ◽  
Radial Magnetic Bearing

Abstract This paper presents an analysis of the stator teeth geometry impact on the parameters of the 8-pole radial magnetic bearing. In this paper, such parameters as current gain and position stiffness have been analysed. Additionally, we have proposed criteria for evaluating the characteristics of these parameters by calculating the variability of current gain and position stiffness. The research has been performed by solving the magnetic bearing actuator boundary problem using the finite element method. Magnetic force has been calculated using the Maxwell stress tensor method. Other parameters, such as current gain and position stiffness have been calculated as partial derivate of the force with respect to control current and position of the rotor.

Comparison of Magnetic Field Parameters Obtained from 2D and 3D Finite Element Analysis for an Active Magnetic Bearing

2014 ◽  
Vol 214 ◽  
pp. 130-137 ◽  
Author(s):  
Dawid Wajnert
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Numerical Models ◽  
Three Dimensional ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Element Analysis ◽  
3 Dimensional ◽  
Three Dimensional Models ◽  
Magnetic Field Computation

The paper presents numerical modeling of 8-pole radial active magnetic bearing based on 2-dimensional and 3-dimensional magnetic field computation with nonlinear characteristic of magnetic material. In this work has been used numerical models based on finite element methods. In paper has been specified differences between two and three dimensional models. Results of numerical calculation have been verified by measurement of magnetic field distribution and inductances of windings.

scholarly journals Fem Software Based 2-D and 3-D Construction and Simulation of Single and Double Coils Active Magnetic Bearing

2019 ◽  
Vol 8 (11) ◽  
pp. 665-675
Keyword(s):  
Magnetic Field ◽  
Three Dimensional ◽  
Magnetic Bearing ◽  
Simulation Software ◽  
Active Magnetic Bearing ◽  
Two Dimensional ◽  
Active Magnetic Bearings ◽  
Single Coil ◽  
Distinctive Structure ◽  
Amb System

This elaboration offers a dynamic model of an Active Magnetic Bearing (AMB) simulated in ANSYS Maxwell 17.1. This work reports simulation for two distinctive structure of AMBs that utilizations single electromagnets and double attraction type electromagnets put in 180 degrees separated from each other. At first, the theoretical model of single coil AMB and double coils AMB has been presented. It also deals with a simulation study of active magnetic bearings utilizing Finite Element Method (FEM) in two-dimensional (2-D) and three-dimensional (3-D) platform. 2-D and 3-D simulation have been compared for single and double coils AMB system. Magnetic properties such as- force, magnetic, flux pattern and flux density are performed and observed utilizing ANSYS Maxwell simulation software. This paper also includes a comparative study of an AMBs system with the variation in the gap between the actuator and the rotor and the effect of variation in inductance, flux, magnetic field and force are detected which is obligatory for hardware execution of an AMB system

Field Determination and Calculation of Stiffness Parameters in an Active Magnetic Bearing (AMB)

2009 ◽  
Vol 147-149 ◽  
pp. 125-130 ◽  
Author(s):  
Bronisław Tomczuk ◽  
Jan Zimon
Keyword(s):  
Magnetic Field ◽  
Magnetic Force ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Field Analysis ◽  
Stator Winding ◽  
3D Finite Element ◽  
Field Modeling ◽  
Measurement Results ◽  
3D Finite Element Method

Field analysis was applied to the simulation of magnetic field distribution and calculation of its integral parameters in an active magnetic bearing (AMB). 3D Finite Element Method (FEM) was employed for the computations. The magnetic force which act on the moving shift and stiffness parameters of AMB were calculated under the steady state conditions. The measurement results confirm rightness of the field modeling. The inductances of the stator winding coils were computed, as well. They have been used for the analysis of the AMB dynamics, which is not presented here.

A simplified numerical and analytical study for assessing the seismic response of a gravity concrete lock

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Neander Berto Mendes ◽  
Lineu José Pedroso ◽  
Paulo Marcelo Vieira Ribeiro
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analytical Study ◽  
Two Dimensional ◽  
The Finite Element Method ◽  
Fluid Structure ◽  
Analytical Formulation ◽  
Acoustic Cavity ◽  
Water Chamber ◽  
Structure Problem

ABSTRACT: This work presents the dynamic response of a lock subjected to the horizontal S0E component of the El Centro earthquake for empty and completely filled water chamber cases, by coupled fluid-structure analysis. Initially, the lock was studied by approximation, considering it similar to the case of a double piston coupled to a two-dimensional acoustic cavity (tank), representing a simplified analytical model of the fluid-structure problem. This analytical formulation can be compared with numerical results, in order to qualify the responses of the ultimate problem to be investigated. In all the analyses performed, modeling and numerical simulations were done using the finite element method (FEM), supported by the commercial software ANSYS.

Basic Statements of Research and Magnetic Field of Axial Excitation Inductor Generator

2011 ◽  
Vol 28 (1) ◽  
pp. 49-52
Author(s):  
Igors Stroganovs ◽  
Andrejs Zviedris
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Magnetic Flux ◽  
Magnetic System ◽  
System Optimization ◽  
Magnetic Saturation ◽  
The Finite Element Method ◽  
Flux Linkage ◽  
Axial Excitation

Basic Statements of Research and Magnetic Field of Axial Excitation Inductor GeneratorIn this work the main features of axial excitation inductor generators are described. Mathematical simulation of a magnetic field is realized by using the finite element method. The objective of this work is to elucidate how single elements shape, geometric dimensions and magnetic saturation of magnetic system affect the main characteristics of the field (magnetic induction, magnetic flux linkage). The main directions of a magnetic system optimization are specified.

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