The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 1998
Filed:
Apr. 24, 1996
Tetsuya Imai, Moriguchi, JP;
Kazuyuki Sakiyama, Shijyonawate, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In the method of calculating the impedance of an electromagnetic part, the cost is low, the calculation time is short, and data for analysis are easy to handle. In order to allow an axially symmetric three-dimensional magnetic field analysis method to be applied, two kinds of modeling are conducted in a first step on the electromagnetic part; data indicative of the material properties, and various condition data such as an AC voltage to be applied to a winding, and predetermined boundary conditions are prepared in a second step; in a third step, each of two kinds of models is subjected to a coupled analysis of an axially symmetric magnetic field analysis and an electric circuit analysis, a current I flowing through a circuit in response to an application of a voltage E is obtained, and the impedance of each circuit is obtained in accordance with expression 1; and, in a fourth step, a corrected impedance of the electromagnetic part is calculated from the impedances of the models in accordance with expression 3.