Invention Grant
- Patent Title: Method for analyzing operating point of permanent magnet, program therefor, and recording medium
- Patent Title (中): 用于分析永磁体的工作点,程序和记录介质的方法
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Application No.: US13210454Application Date: 2011-08-16
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Publication No.: US08781763B2Publication Date: 2014-07-15
- Inventor: Shigeru Kakugawa , Masashi Kitamura , Kohji Maki , Shinji Sugimoto
- Applicant: Shigeru Kakugawa , Masashi Kitamura , Kohji Maki , Shinji Sugimoto
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2010-187964 20100825
- Main IPC: G01R15/00
- IPC: G01R15/00 ; G01R33/12

Abstract:
A method for analyzing an operating point of a permanent magnet performs electromagnetic field analysis based on a B-H curve of the permanent magnet and element data concerning a finite number of elements into which the permanent magnet is divided to obtain the operating point of the permanent magnet. The method includes the steps of storing data of inputted B-H curve; obtaining magnetic flux densities and magnetic fields in plural regions of the permanent magnet by performing the electromagnetic field analysis based on the data of the B-H curve; and obtaining the operating point of each of the elements based on the result of the electromagnetic field analysis by employing a variable, the variable continuously varying in a first quadrant, in a second quadrant, in a third quadrant, and over these quadrants of the B-H curve and linearly varying with respect to the magnetic flux density and magnetic field.
Public/Granted literature
- US20120053866A1 METHOD FOR ANALYZING OPERATING POINT OF PERMANENT MAGNET, PROGRAM THEREFOR, AND RECORDING MEDIUM Public/Granted day:2012-03-01
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