This paper describes the design of a system for the characterization of magnetic hysteresis behavior in soft ferrite magnetic cores. The proposed setup can test magnetic materials exciting them with controlled arbitrary magnetic field waveforms, including the capability of providing a DC bias, in a frequency bandwidth up to 500 kHz, with voltages up to 32 V peak-to-peak, and currents up to 10 A peak-to-peak. In order to have an accurate control of the magnetic field waveform, the system is based on a voltage controlled current source. The electronic design is described focusing on closed loop feedback stabilization and passive components choice. The system has real-time hysteretic loop acquisition and visualization. The comparisons between measured hysteresis loops of sample magnetic materials and datasheet available ones are shown. Results showing frequency and thermal behavior of the hysteresis of a test sample prove the system capabilities. Moreover, the B-H loops obtained with a multiple waveforms excitation signal, including DC bias, are reported. The proposal is a low-cost and replicable solution for hysteresis characterization of magnetic materials used in power electronics.
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April 2015
Research Article|
April 09 2015
Automated setup for magnetic hysteresis characterization based on a voltage controlled current source with 500 kHz full power bandwidth and 10 A peak-to-peak current
G. Calabrese;
G. Calabrese
1Dipartimento di Ingegneria dell’Informazione,
Università degli Studi di Firenze
, Firenze 50139, Italy
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L. Capineri
;
L. Capineri
a)
1Dipartimento di Ingegneria dell’Informazione,
Università degli Studi di Firenze
, Firenze 50139, Italy
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M. Granato
;
M. Granato
2
Texas Instruments Italia
, Rozzano (MI) 20089, Italy
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G. Frattini
G. Frattini
2
Texas Instruments Italia
, Rozzano (MI) 20089, Italy
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a)
Author to whom correspondence should be addressed. Electronic mail: lorenzo.capineri@unifi.it.
Rev. Sci. Instrum. 86, 044709 (2015)
Article history
Received:
January 23 2015
Accepted:
March 26 2015
Citation
G. Calabrese, L. Capineri, M. Granato, G. Frattini; Automated setup for magnetic hysteresis characterization based on a voltage controlled current source with 500 kHz full power bandwidth and 10 A peak-to-peak current. Rev. Sci. Instrum. 1 April 2015; 86 (4): 044709. https://doi.org/10.1063/1.4916992
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