Investigation of Core Losses under Different Conditions Applying the Cross Power Method
Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2016
Pages: 8Language: englishTyp: PDF
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Authors:
Hudoffsky, Boris (PMK Mess- und Kommunikationstechnik GmbH, Germany)
Okinori, Chihiro (IWATSU Test Instruments Corp., Japan)
Trueller, Juergen (HF Instruments GmbH, Germany)
Abstract:
Different materials for power inductor cores are investigated concerning their specific corelosses under different conditions. The characteristic magnetizing curve, the BH-loop, of soft magnetic cores could change dramatically, if the application consists of considerable mean valued currents. Core losses are related to the area in the BH-loop and are expected to be low for high efficiency circuits. In this paper five different types of materials as ring cores are analyzed either without or with a DC-biased excitation current. BH-loops as results show influence as well as immunity of the application of real conditions to the measurements. The measurements are taken on a BH-analyzer system with the capability of the cross power method by varying the DC-bias operated at four different frequencies.