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:
Jan. 22, 2013
Filed:
Feb. 17, 2006
Matahiro Komuro, Hitachi, JP;
Yuichi Satsu, Hitachi, JP;
Haruo Koharagi, Hitachi, JP;
Yuji Enomoto, Hitachi, JP;
Matahiro Komuro, Hitachi, JP;
Yuichi Satsu, Hitachi, JP;
Haruo Koharagi, Hitachi, JP;
Yuji Enomoto, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A permanent magnet type electric rotating machine having a high resistance permanent magnet used for the electric rotating machine, the permanent magnet containing a magnetic powder and a fluorine compound, in which the current waveform is controlled for reducing the loss to satisfy a relation: A<C<B and restrict the 7th higher-harmonic component to 20% or less where A is the content for the 5th higher harmonic component, B is the content for the 7th higher harmonic component, and C is the content for the 11th higher harmonic component, assuming the total of contents for the fundamental components of a current supplied to the findings being 100%.