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:
Aug. 13, 2002
Filed:
Jan. 28, 2000
Kenji Miyata, Hitachinaka, JP;
Hideshi Fukumoto, Hitachinaka, JP;
Akiyoshi Komura, Hitachi, JP;
Kohji Maki, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method of analyzing electromagnetic fields created in a rotary machine and an analyzer. The method and analyzer provide for an electromagnetic field in a total analysis space of a rotary machine including a stator space containing a stator and a rotor space containing a rotor to be analyzed to determined a boundary field between the stator space and the rotor space. The boundary field in a direction of rotation in modes is expanded and the modes obtained by expansion are converted into rotating magnetic field components. using the rotating magnetic field components as boundary conditions for a boundary between the stator space and the rotor space, an electromagnetic field in the stator space is analyzed and an electromagnetic field in the rotor space is analyzed.