Impact of Magnetic Nonlinearities and Cross-Coupling Effects on Properties of Radial Active Magnetic Bearings

Polajžer, Boštjan; Štumberger, Gorazd; Ritonja, Jožef; Težak, Oto; Dolinar, Drago; Hameyer, Kay

doi:10.1109/tmag.2004.824581

Cited by 27 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is assumed that the mass density of the shaft is 7.9 g/cm 3 . The number of turns (N) is 50 for each pole and the gap (g) between the rotor and the inner wall of the bearing set is 0.5 mm [9][10][11].…”

Section: Model and Equationsmentioning

confidence: 99%

Electromagnetic Analysis of Fuzzy Controlled Active Magnetic Bearings

2018

View full text Add to dashboard Cite

Abstract. The main objective of the current paper is to present the electromagnetic and thermal analysis of an AMB which is controlled by a non-linear controller, taking into account the weight of the rotor. The system consists of a rotor and two pairs of electromagnets, each one placed on the vertical and horizontal axis respectively. A Fuzzy PID controller [ Fig. 2] is used to control a pair of electromagnets (vertical or horizontal axis) of the AMB system and the rotor. The magnetic field simulation has been implemented through the ANSYS software and the control settings have been simulated using MATLAB/SIMULINK software. The interaction between these two programs is presented throughout this study. In order to define the dynamic modelling of the overall system, it is considered that the rotating magnetic field of the motor does not affect the AMB. The coil of the magnetic bearings is fed by a controlled power source. As it has already been mentioned above, the non-linear control model is implemented through a Fuzzy PID Controller, while the system is disrupted by a white noise signal for the simulation of the disturbances taking place during normal operation.

show abstract

Section: Model and Equationsmentioning

confidence: 99%

Electromagnetic Analysis of Fuzzy Controlled Active Magnetic Bearings

2018

View full text Add to dashboard Cite

show abstract

“…It is due to omitting of the nonlinear B-H characteristic of the magnetic material and imprecise modeling of the magnetic circuit. More accurate results are obtained by using the finite element method (FEM) to determine the magnetic field distribution in AMB geometry [2]. A field model of the radial AMB has been analyzed in FEMM 4.2 software [6].…”

Section: Parameters Of the Magnetic Bearing And Its Finite Element Modelmentioning

confidence: 99%

“…Brought to you by | MIT Libraries Authenticated Download Date | 5/9/18 12:33 PM In the paper [2], authors have proved, that the magnetic nonlinearities and cross-coupling effect have significant impact on properties of a radial magnetic bearing. Similar conclusions have been reached by the authors of the paper [3].…”

Section: Introductionmentioning

confidence: 99%

The influence of the stator geometry on magnetic bearing parameters

Tomczuk¹,

Wajnert²

2013

Archives of Electrical Engineering

View full text Add to dashboard Cite

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.

show abstract

“…For example, Bostjan Polajzer et al constructed a radial magnetic bearing's dynamic magnetic circuit model and determined the flux linkages and radial force by finite element computation [2]. Robert J. Prins et al used a magnetic circuit formula to describe the relationship between force, air gaps, and current for a double-acting actuator of a magnetic bearing [3].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Magnetic Field Measurement in the Air Gap of Magnetic Bearings Based on FBG-GMM Sensor

Liu

Zhou

Ding

et al. 2015

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

Magnetic field in magnetic bearings is the physical medium to realize magnetic levitation, the distribution of the magnetic field determines the operating performance of magnetic bearings. In this paper, a thin-slice Fiber Bragg Grating-Giant Magnetostrictive Material magnetic sensor used for the air gap of magnetic bearings was proposed and tested in the condition of dynamic magnetic field. The static property of the sensor was calibrated and a polynomial curve was fitted to describe the performance of the sensor. Measurement of dynamic magnetic field with different frequencies in magnetic bearings was implemented. Comparing with the finite element simulations, the results showed the DC component of the magnetic field was detected by the sensor and error was less than 5.87%.

show abstract

Impact of Magnetic Nonlinearities and Cross-Coupling Effects on Properties of Radial Active Magnetic Bearings

Cited by 27 publications

References 6 publications

Electromagnetic Analysis of Fuzzy Controlled Active Magnetic Bearings

Electromagnetic Analysis of Fuzzy Controlled Active Magnetic Bearings

The influence of the stator geometry on magnetic bearing parameters

Dynamic Magnetic Field Measurement in the Air Gap of Magnetic Bearings Based on FBG-GMM Sensor

Contact Info

Product

Resources

About