Journal ArticleDOI
A general formula for prediction of iron losses under nonsinusoidal voltage waveform
M. Amar,R. Kaczmarek +1 more
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TLDR
In this paper, a simple and efficient method for the estimation of iron loss under any nonsinusoidal voltage without multiple zero crossings (i.e. without minor hysteresis loops) is proposed.Abstract:
A simple and efficient method for the estimation of iron loss under any nonsinusoidal voltage without multiple zero crossings (i.e. without minor hysteresis loops) is proposed. This method is based on the loss separation model, where iron loss is decomposed into hysteresis, classical and excess loss components. The voltage waveform is identified by the form factor coefficient, easily accessible. Knowledge of the voltage harmonic spectrum is not required in this method. The cases of rectangular pulse, PWM, and fundamental plus a controlled third harmonic voltage are treated and a satisfactory prediction of iron loss is obtained. >read more
Citations
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Journal ArticleDOI
Predicting iron losses in soft magnetic materials with arbitrary voltage supply: an engineering approach
TL;DR: In this article, the authors proposed a new approach for predicting iron losses in soft magnetic materials with any voltage supply, starting from the knowledge of the iron losses with a sinusoidal or pulsewidth modulation supply.
Journal ArticleDOI
Predicting loss in magnetic steels under arbitrary induction waveform and with minor hysteresis loops
TL;DR: In this article, the power loss in soft magnetic laminations for generic time dependence of the periodic magnetic polarization J(t) was quantitatively assessed within the theoretical framework of the statistical loss model.
Proceedings ArticleDOI
An improved formula for lamination core loss calculations in machines operating with high frequency and high flux density excitation
Yicheng Chen,Pragasen Pillay +1 more
TL;DR: In this article, three currently available formulas are discussed and compared with the loss data supplied by lamination steel manufacturers, and it is found that the dynamic hysteresis loop plays an important role in the total loss calculation.
Proceedings ArticleDOI
Induction motor thermal aging caused by voltage distortion and imbalance: loss of useful life and its estimated cost
J.P.G. de Abreu,A.E. Emanuel +1 more
TL;DR: In this article, the effect of voltage distortion and imbalance (VDI) on the thermal aging of low voltage induction motors was investigated. But the study was based on a detailed thermal modeling of actual motors in the 2 to 200 HP range.
Journal ArticleDOI
A General Model to Predict the Iron Losses in PWM Inverter-Fed Induction Motors
TL;DR: In this paper, an accurate and efficient method for predicting the iron losses in pulsewidth modulation (PWM) inverter-fed induction motors is presented. But the method requires the separation of the IR losses in the hysteresis and eddy-current components and the average rectified and rms of the PWM voltage values.
References
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Journal ArticleDOI
An improved approach to power losses in magnetic laminations under nonsinusoidal induction waveform
Fausto Fiorillo,A. Novikov +1 more
TL;DR: In this article, it is shown that it is possible to accurately predict power losses in ferromagnetic laminations under nonsinusoidal magnetic flux by specifically considering the dependence of hysteresis, classical, and excess loss components on the magnetic induction derivative B.
Journal ArticleDOI
Physical interpretation of eddy current losses in ferromagnetic materials. I. Theoretical considerations
TL;DR: In this article, the basic physical mechanism responsible for the general behavior of eddy current losses versus magnetizing frequency fm is recognized in the competition between the external field and local internal fields, due to magnetostatic, coercive, and eddy currents effects.
Journal ArticleDOI
A simple method of estimating the minor loop hysteresis loss in thin laminations
TL;DR: In this article, a simple and practical method of correcting the hysteresis loss in a thin lamination for the effects of minor loops is described, and the necessary correction is applied to the losses that would occur under conditions of sinusoidal flux density.
Journal ArticleDOI
Iron losses in magnetic materials with six-step and PWM inverter supply (induction motors)
TL;DR: In this paper, the energetic behavior of two samples of soft magnetic materials fed by inverters has been studied and the authors dealt with the increase of the iron losses due to a nonconventional voltage supply.
Journal ArticleDOI
About The Effects Of Different Modulation Index On The Iron Losses In Soft Magnetic Materials Supplied By Pwm Inverter
TL;DR: In this article, the increase in iron-loss in soft magnetic materials due to modulation depth in pulse width modulation (PWM) inverters is analyzed, both in wound cores realized with high quality grain oriented magnetic material, and in induction motors.