DocumentCode :
3421236
Title :
Frequency dependence of the ferrite-loss increase caused by premagnetization
Author :
Brockmeyer, Ansgar ; Paulus-Neues, Jutta
Author_Institution :
Inst. for Power Electron. & Electr. Drive, Aachen Univ. of Technol., Germany
Volume :
1
fYear :
1997
fDate :
23-27 Feb 1997
Firstpage :
375
Abstract :
Ferrite cores of magnetic components used in power electronics are often biased with a DC or low frequency premagnetization. Work has shown that a bias field may have significant influence on the remagnetization losses and therefore has to be considered in the component design. Using a precise measurement setup this paper investigates the frequency dependence of the power loss increase due to premagnetization. The measurements are performed on typical ferrites of two major manufacturers. The experimental results show that there are two major contributions to the total remagnetization losses of soft-ferrites whereas only one contribution is influenced by premagnetization. Finally the paper discusses some aspects of a mathematical description for the bias problem and leads to an improved understanding that might be useful for the designer of magnetic components
Keywords :
ferrite devices; loss measurement; losses; magnetic cores; magnetisation; power electronics; soft magnetic materials; DC premagnetisation; ferrite-loss increase; frequency dependence; low frequency premagnetization; magnetic components design; power electronics; power loss; precise measurement setup; premagnetization; soft-ferrites; Ferrites; Frequency dependence; Frequency measurement; Loss measurement; Magnetic cores; Magnetic field measurement; Manufacturing; Performance evaluation; Power electronics; Power measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3704-2
Type :
conf
DOI :
10.1109/APEC.1997.581478
Filename :
581478
Link To Document :
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