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The Electromagnetic Losses Analysis of Inverter-Fed Induction Motor Accounting for Interbar Current and Rotor Slip Frequency | IEEE Journals & Magazine | IEEE Xplore

The Electromagnetic Losses Analysis of Inverter-Fed Induction Motor Accounting for Interbar Current and Rotor Slip Frequency


Abstract:

Compared with the fundamental loss, the harmonic losses become very complicated because of the coupling between the power supply harmonics and the motor harmonics. To dis...Show More

Abstract:

Compared with the fundamental loss, the harmonic losses become very complicated because of the coupling between the power supply harmonics and the motor harmonics. To dispose of this problem, a multislice 2-D finite element model considering the interbar currents and a fast rotor harmonics identification method is employed to identify the harmonics of the rotor current density and flux density of the inverter-fed induction motor (IM). Considering the complex coupling phenomenon of time–space harmonics, a two-term iron model with piecewise-defined variable coefficients (PVCIL model) and a finite element analysis (FEA)-based copper loss method are then used to calculate the iron and copper loss components of the inverter-fed IM. Finally, based on the introduced methods, both the electromagnetic field and different losses terms of the same 5.5-kW inverter-fed IM under different load and supply conditions are calculated and analyzed. The experimental validation of those two losses’ calculation methods is performed on a 5.5-kW IM with different operating conditions. The results obtained in this article can provide the theoretical basis for targeted harmonic elimination and loss reduction in the design phase of the inverter-fed IM.
Published in: IEEE Transactions on Transportation Electrification ( Volume: 8, Issue: 1, March 2022)
Page(s): 1155 - 1167
Date of Publication: 12 August 2021

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