DocumentCode :
437182
Title :
A practical, accurate and very general core loss model for nonsinusoidal waveforms
Author :
Roshen, W.A.
Author_Institution :
SSPower Technol., Ohio State Univ., Columbus, OH
Volume :
2
fYear :
2005
fDate :
6-10 March 2005
Firstpage :
1308
Abstract :
Nonsinusoidal voltage waveforms are quite common in high frequency power conversion magnetics. Low frequency nonsinusoidal waveforms are also common in AC motor applications with waveforms such as PWM and six-step. Previous attempts to model these losses, based on Steinmetz equation, can work only in a limited range of frequencies, flux density excitations and waveforms. In this paper we present a very practical, yet very general and accurate model, for core loss calculations in case of nonsinusoidal voltage waveforms. We show the model is equally applicable to low and high frequencies, metallic as well as nonmetallic (e.g. ferrites) core materials, by comparing the model prediction with measured data for various waveforms, frequencies, and flux densities. The model can be used for the design of high frequency transformers and inductors for use in switched mode power supplies. The model can also be used for AC motors where it is hard to estimate `Derating Factor´ and to avoid uncontrolled temperature rise
Keywords :
AC motors; high-frequency transformers; inductors; pulse width modulation; switched mode power supplies; transformer cores; AC motor application; PWM; Steinmetz equation; core loss model; core material; high frequency power conversion; high frequency transformer; inductor; switched mode power supply; temperature rise; voltage waveform; AC motors; Core loss; Equations; Frequency conversion; Magnetics; Power conversion; Predictive models; Pulse width modulation; Switched-mode power supply; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-8975-1
Type :
conf
DOI :
10.1109/APEC.2005.1453176
Filename :
1453176
Link To Document :
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