Accuracy Investigation of High-Frequency Core-Loss Measurement for Low-Permeability Magnetic Materials
Yuki Sato, Yuji Uehara, Satoshi Okamoto, Shigeyoshi Yoshida, Yasushi Endo, N. ONO, Nobuto Misono, Hirokazu Matsumoto
Abstract
This study investigates the accurate measurements of high-frequency core loss using a capacitive cancellation method for low-permeability magnetic material, which leads to high leakage flux during measurement. We observe that the core loss is underestimated with the lower coupling of the core-under-test (CUT). To solve the issue, we propose a new correction method, in which the effective permeability observed during the measurement is measured, and the core loss is corrected with that permeability. The core loss is corrected by the proposed method even when high leakage flux exists.
Topics & Concepts
Permeability (electromagnetism)Materials scienceMagnetic flux leakageMagnetic coreMagnetic fluxNuclear magnetic resonanceCore (optical fiber)Leakage (economics)Low frequencyMagnetic fieldComposite materialPhysicsElectromagnetic coilComputer scienceTelecommunicationsMacroeconomicsMembraneBiologyGeneticsEconomicsQuantum mechanicsMagnetic Properties and ApplicationsMagnetic Field Sensors TechniquesNon-Destructive Testing Techniques