MAGNETIC PROPERTY ANALYSIS SYSTEM AND MAGNETIC PROPERTY ANALYSIS METHOD

摘要

PROBLEM TO BE SOLVED: To accurately derive hysteresis loss and eddy current loss of a magnetic material even when the density of a magnetic flux generated in the magnetic material is not a sine wave.;SOLUTION: A waveform correction part 613 performs correcting an indication waveform of an excitation voltage according to the difference between a measured waveform and a target waveform of an induction voltage until the measured waveform of the induction voltage is converged to the target waveform. A convergence determination part 614 determines that the measured waveform of the induction voltage is converged to the target waveform when a value using an integrated value for one cycle of the absolute value of difference values at the time instances between the measured waveform and target waveform of the induction voltage is equal to or less than a reference value. An analysis part 116 obtains a magnetic flux density vector and an eddy current vector generated in a measurement sample S by applying, to an excitation coil 102, the indication waveform of the excitation voltage when the measured waveform of the induction voltage is converged to the target waveform, by executing three-dimensional numerical analysis based on Maxwell's equations.;SELECTED DRAWING: Figure 6;COPYRIGHT: (C)2019,JPO&INPIT