scholarly journals Sensitivity Analysis of Inverse Thermal Modeling to Determine Power Losses in Electrical Machines

2018 ◽  
Vol 54 (11) ◽  
pp. 1-5 ◽  
Author(s):  
Devi Geetha Nair ◽  
Paavo Rasilo ◽  
Antero Arkkio
Keyword(s):  
Sensitivity Analysis ◽  
Thermal Modeling ◽  
Electrical Machines ◽  
Power Losses

scholarly journals Operating at High TemperaturesContribution to the Magneto-Thermal Modeling of SRM Operating at High Temperatures

2021 ◽  
Vol 23 (2) ◽  
pp. 143-147
Author(s):  
Karim Alitouche ◽  
Hocine Menana ◽  
Jihane Khalfi ◽  
Noureddine Takorabet ◽  
Rachid Saou
Keyword(s):  
Thermal Properties ◽  
High Temperatures ◽  
Thermal Modeling ◽  
Electrical Machines ◽  
Switched Reluctance ◽  
Thermal Properties Of Materials ◽  
Properties Of Materials ◽  
Modeling Strategy

In this paper, we present a simplified magneto-thermal modeling strategy for switched reluctance electrical machines (SRM) operating at high temperatures. In addition to the magnetic non-linearity, the variations of the electromagnetic and thermal properties of materials with the temperature are taken also into account. The rapidity of the proposed approach makes it compatible with a CAD approach.

Overloss coefficient in magnetic laminations during PWM supply voltage

2010 ◽  
Vol 59 (3-4) ◽  
pp. 169-176 ◽  
Author(s):  
Kazimierz Zakrzewski
Keyword(s):  
Hysteresis Loop ◽  
Analytical Method ◽  
Supply Voltage ◽  
Excitation Frequency ◽  
Anisotropic Materials ◽  
Electrical Machines ◽  
Magnetic Saturation ◽  
Power Losses ◽  
Method Of Calculation ◽  
Harmonic Power

Overloss coefficient in magnetic laminations during PWM supply voltage Author presents an analytical method of calculation of unit power losses in magnetic laminations used in electrical machines and transformers. The idea of this method, based on the solution of Maxwell's equations in the lamination material, was described by the author in the previous work [3], taking into account approximation of constitutive static hysteresis loop by elliptic form of the function B = f(H) depending on magnetic saturation. In the previous formula for new isotropic and anisotropic materials it is needed to introduce so called "anomaly coefficient" deduced from the comparison of measured and calculated value of power losses in arbitrary excitation frequency for assumed induction. The method was tested by comparison with the results of experiments presented in commercial catalogues [1, 2]. Assuming superposition of harmonic power losses it is possible to enlarge this method for the estimation of overloss coefficient in dynamo sheet during axial magnetization with nonsinusoidal flux generated e.g. by PWM voltage supply.

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