| 摘要 |
The present invention provides a magnetic field analysis program and a magnetic field analysis method for calculating inductance related to an AC magnetic field superimposed on a DC magnetic field with a high degree of accuracy at high speed. The magnetic field analysis program is a program for analyzing an AC magnetic field through a frequency response analysis, and causes a computer to carry out: a process of inputting a DC magnetic flux density or a DC magnetic field strength, the amplitude and the frequency of an alternating current, and the initial magnetization curve of the magnetic material of an analysis object, calculating a DC magnetic field strength when a DC magnetic flux density is input, and calculating a DC magnetic flux density when a DC magnetic field strength is input (S100); a process of calculating an AC magnetic flux density and an AC magnetic field strength by carrying out the frequency response analysis using the amplitude and the frequency of the alternating current (S104); and a process of finding such a solution that the sum of the maximum value of the AC magnetic flux density obtained through the frequency response analysis and the DC magnetic flux density becomes equal to the magnetic flux density determined from the sum of the maximum value of the AC magnetic field strength obtained through the frequency response analysis and the DC magnetic field strength, and the initial magnetization curve, with a desired degree of accuracy (S105, S106). |
