Magnetic loss versus frequency in non-oriented steel sheets and its prediction: minor loops, PWM, and the limits of the analytical approach

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Tipo di pubblicazione: Articolo su rivista
Tipologia MIUR: Contributo su Rivista > Articolo in rivista
Titolo: Magnetic loss versus frequency in non-oriented steel sheets and its prediction: minor loops, PWM, and the limits of the analytical approach
Autori: Zhao, Hanyu; Ragusa, Carlo; De La Barriere, Olivier; Khan, Mahmood; Appino, Carlo; Fiorillo, Fausto
Autori di ateneo:
Tipo di referee: Esperti anonimi
Editore: IEEE / Institute of Electrical and Electronics Engineers
Intervallo pagine: p. 1
Numero di pagine: 4
ISSN: 0018-9464
Abstract: The Pulse Width Modulation (PWM) technique is commonly used to supply modern high-speed electrical machines. The fundamental frequency is typically in the kilohertz range, with switching frequencies of several tens of kilohertz, as determined by the new SiC or GaAs based power transistors modules. Switching introduces minor loops in the major hysteresis cycle, with durations of the order of 100 μs or lower, with the resulting magnetization dynamics influenced by strong skin effect. However, since these minor loops have relatively small amplitude, their constitutive equation may be described by an equivalent permeability (real or complex), depending on the mean slope of the minor loop and its static energy loss. By retrieving this permeability, the classical loss is straightforwardly calculated by analytical solution of the Maxwell's equations. In this work, we measure and calculate, according to the quasi-linear approximation for the minor loops, the magnetic energy losses of 0.194 mm thick non-oriented Fe-Si 3.2% sheets subjected to PWM induction waveform. Minor loop peak amplitudes ranging between 50 mT and 0.2 T and frequencies up to 10 kHz are investigated. The results are consistent with the proposed model, to within 5%.
Data: 2017
Status: Pubblicato
Lingua della pubblicazione: Inglese
Parole chiave: skin effect, loss measurement, magnetic hysteresis, mathematical model, pulse width modulation, frequency modulation, permeability
Dipartimenti (originale): DENERG - Dipartimento Energia
DET - Dipartimento di Elettronica e Telecomunicazioni
Dipartimenti: DENERG - Dipartimento Energia
URL correlate:
Area disciplinare: Area 09 - Ingegneria industriale e dell'informazione > ELETTROTECNICA
Data di deposito: 28 Mag 2017 21:04
Data ultima modifica (IRIS): 28 Mag 2017 21:09:09
Data inserimento (PORTO): 30 Mag 2017 02:03
Numero Identificativo (DOI): 10.1109/TMAG.2017.2701299
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