Estimation of core losses under sinusoidal or nonsinusoidal induction by analysis of magnetization rate

This work deals with a method of analysis which estimates the increase of core losses under sinusoidal and nonsinusoidal inductions. The estimation can be carried out by correlating instantaneous magnetization power (P/sub M/) or the instantaneous magnetic field (H) as a function of the magnetizatio...

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Bibliographic Details
Published in:IEEE transactions on energy conversion 2001-06, Vol.16 (2), p.174-179
Main Authors: Lancarotte, M.S., de A. Penteado, A.
Format: Article
Language:English
Subjects:
Core loss
Correlation
Electric machines
Magnetic analysis
Magnetic domain walls
Magnetic domains
Magnetic fields
Magnetic hysteresis
Magnetic induction
Magnetic losses
Magnetic separation
Magnetization
Noise levels
Sheet metal
Testing
Waveforms
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Summary:This work deals with a method of analysis which estimates the increase of core losses under sinusoidal and nonsinusoidal inductions. The estimation can be carried out by correlating instantaneous magnetization power (P/sub M/) or the instantaneous magnetic field (H) as a function of the magnetization rate (dB/dt) and the induction level (B). Experimentally, this correlation can be obtained under triangular waveform induction tests. Predictions under sinusoidal and nonsinusoidal inductions were made in oriented and nonoriented FeSi steel sheets. The predictions, when compared to experimental results, show an error of up to 3% for nonoriented, and of up to 5% for oriented materials. Also, this method allows the prediction of the loss loop shapes. The limitations and perspectives of the method are considered in this work.
ISSN:0885-8969
1558-0059
DOI:10.1109/60.921469