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.

Date of Patent:
Jun. 27, 2006

Filed:

May. 24, 2005
Applicants:

Yoshinori Nakagawa, Saitama, JP;

Toshio Inoue, Saitama, JP;

Kazufumi Muronoi, Saitama, JP;

Inventors:

Yoshinori Nakagawa, Saitama, JP;

Toshio Inoue, Saitama, JP;

Kazufumi Muronoi, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/00 (2006.01); H02M 5/42 (2006.01);
U.S. Cl.
CPC ...
Abstract

An abnormality of a generator provided with a plurality of power supply units is easily detected. Each of the power supply units includes each of output windings Lto L, which are wound independently of each other around the single iron core, and each of rectifier circuitsto. The power supply units produce an integrated output power. Control meanstocontrol the rectifier circuits such that an output voltage agrees with a target voltage Vref. In a case where an added up power W becomes a power target value Wref, when the added up current I further increases, a power comparing sectionreduces the target voltage Vref to prevent the rectifier circuits from outputting power. Further, when the added up current I exceeds a current upper limit ILMT, a gate pulse is stopped.


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