Reduced-Order Eddy-Current Loss Modelling of Electrical Machines Using Lookup Tables Obtained via 2D Finite-Element

2018 ◽  
Author(s):  
Diogo E. Pinto ◽  
Adrian-Cornel Pop ◽  
Joachim Kempkes ◽  
Johan Gyselinck
Keyword(s):  
Finite Element ◽  
Eddy Current ◽  
Eddy Current Loss ◽  
Electrical Machines ◽  
Reduced Order ◽  
Current Loss ◽  
Lookup Tables ◽  
Loss Modelling

Effect of DC Supply Voltage on Eddy Current Loss in Permanent Magnet of Permanent Magnetic Synchronous Motor for Electric Vehicle Application

2013 ◽  
Vol 310 ◽  
pp. 262-265
Author(s):  
Xiao Peng Wu ◽  
Cheng Ning Zhang ◽  
Yu Gang Dong
Keyword(s):  
Finite Element ◽  
Permanent Magnet ◽  
Eddy Current ◽  
Supply Voltage ◽  
Element Model ◽  
Eddy Current Loss ◽  
Eddy Current Losses ◽  
Current Loss ◽  
Time Stepping ◽  
The Finite Element Model

The 2-D time-stepping finite element method is adopted to systematically analyze the effect of DC supply voltage of inverter on eddy current loss in permanent magnet of PMSM for EV application. The finite element model and inverter model are built to calculate the winding currents, eddy current losses in permanent magnet and air-gap flux densities with different DC supply voltages when the motor runs in flux-weakening area. Analysis shows that, the eddy current increases significantly with the increase of DC supply voltage, although the fundamental winding current decreases. The temperature-rise experiment of permanent magnet is carried out, proving the validity of analysis.

Thermal Analysis of Canned Induction Motor for Coolant Pump Considering the Eddy Current Loss in Cans

2010 ◽  
Vol 670 ◽  
pp. 466-476 ◽  
Author(s):  
Jian Li ◽  
Jung Tae Song ◽  
Yun Hyun Cho
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Induction Motor ◽  
Eddy Current ◽  
Three Dimensional ◽  
Eddy Current Loss ◽  
Time Step ◽  
Coolant Pump ◽  
Current Loss ◽  
Canned Motor

This paper describes thermal analysis of canned induction motor for coolant pump considering eddy current loss. The electromagnetic field of a canned motor was analyzed by using the time-step finite element method, and the eddy loss was obtained. Equivalent circuit considering can loss was developed and the equitation to calculate can loss was derived from theory of conventional motor. Using the loss from electromagnetic analysis as heat source of temperature field, thermal analysis was conducted by three dimensional finite element analyses. The simulation results show good agreement with experiment data, which indicates that this method has good accuracy and reliability for dealing with thermal behavior of canned motor.

scholarly journals Analysis of eddy current loss in magnetic coupling based on three-dimensional finite element calculation

2021 ◽  
Vol 2093 (1) ◽  
pp. 012039
Author(s):  
Xiaoyue Wang ◽  
Liang Cai ◽  
Yanqin Mao ◽  
Wanjun Guo
Keyword(s):  
Finite Element ◽  
Eddy Current ◽  
Three Dimensional ◽  
Magnetic Coupling ◽  
Eddy Current Loss ◽  
Finite Element Calculation ◽  
Element Calculation ◽  
Current Loss ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Abstract Considering the end effect, the three-dimensional finite element calculation model of the magnetic coupling is established. The three-dimensional distribution nephogram of the induced current and eddy current loss on the isolation cover is obtained, and the distribution trends of the two are consistent. The influence of size, material, and operating condition of magnetic coupling on eddy current loss is studied. The results show that the selection of isolation material with high resistivity and the reduction of isolation thickness are helpful to reduce the eddy current loss. The higher the rotating speed of the magnetic coupling, the greater the eddy current loss. At the same speed, the greater the load, the greater the magnetic declination, the smaller the eddy current loss. The research results can provide a reference for reducing energy loss and cooling structure design of magnetic coupling.

Finite Element Analysis of AMB Eddy-Current Loss in HTR-PM Primary Helium Circulator

2018 ◽  
Author(s):  
Jinpeng Yu ◽  
Yan Zhou ◽  
Mo Ni ◽  
Guojun Yang ◽  
Lei Zhao
Keyword(s):  
Magnetic Field ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Eddy Current ◽  
Electromagnetic Force ◽  
Eddy Current Loss ◽  
Element Analysis ◽  
Current Loss ◽  
Resistance Torque ◽  
Current Magnetic Field

In the active magnetic bearing (AMB) system, the eddy current is generated during the rotation of the rotor, which brings about the AMB loss and eddy-current magnetic field. The eddy-current magnetic field will reduce the electromagnetic force and generate the resistance torque of the AMB. Basing on the AMB of the Primary Helium Circulator (PHC) in HTR-PM, two-dimensional (2D) and three-dimensional (3D) AMB models are built and analyzed with finite element analysis (FEA) in maxwell. The 2D FEA shows that the eddy-current loss and the resistance torque increase as the rotor speed increases, and the eddy-current magnetic field will affect the air-gap magnetic field and reduce the electromagnetic force. The 3D FEA shows that dividing the rotor in insulate sheets can reduce the eddy-current loss. The loss and the sheets thickness have a linear relationship, which is different from the theoretical analysis.

scholarly journals Calculation and Analysis of Permanent Magnet Eddy Current Loss Fault with Magnet Segmentation

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Bing Li ◽  
Ming Li
Keyword(s):  
Finite Element ◽  
Permanent Magnet ◽  
Eddy Current ◽  
Permanent Magnet Synchronous Motor ◽  
Element Model ◽  
Synchronous Motor ◽  
Eddy Current Loss ◽  
Space Harmonic ◽  
Current Loss ◽  
Finite Element Software

This paper investigates the problem of calculating and analyzing the effect of the permanent magnet eddy current loss fault due to magnet segmentation. Taking an interior permanent magnet synchronous motor with inverter supplied as an example, the rated power of motor was 2.2 kW. Three-dimensional finite-element model was firstly established based on finite-element software. Then, the model mesh and boundary conditions were handled specially; permanent magnet eddy current loss fault was calculated and analyzed theoretically with magnet segmentation from space harmonic and time harmonic, respectively. Finally, calculation results were compared and explained. A useful conclusion for permanent magnet synchronous motor design has been obtained.

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