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:
Aug. 30, 2011

Filed:

Oct. 30, 2008
Applicants:

Yasuhiro Nakada, Saitama, JP;

Toshio Inoue, Saitama, JP;

Inventors:

Yasuhiro Nakada, Saitama, JP;

Toshio Inoue, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 9/10 (2006.01); H02P 9/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

Output waveform of the generator is improved through stabilization of field current by removing flywheel diode used to be required for automatic voltage regulator. Output electric current of excitation windingis rectified by rectifierand is supplied to field windingof rotor. Impedance adjustment circuitis provided to circuit where field current flows. Target electric current determination unitdetermines target electric current (target field current) used to control output voltage of power generation windingto the reference voltage. Impedance adjustment circuitincreases or decreases the impedance of field current circuit so that the field current detected by electric current detectorconverges with target electric current.


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