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:
Apr. 06, 2004

Filed:

Sep. 06, 2001
Applicant:
Inventors:

Yoshiaki Kotani, Saitama, JP;

Tomoki Fukushima, Saitama, JP;

Tsutomu Wakitani, Saitama, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/06 ; H02P 1/100 ; H02P 9/00 ; H02P 9/10 ;
U.S. Cl.
CPC ...
H02H 7/06 ; H02P 1/100 ; H02P 9/00 ; H02P 9/10 ;
Abstract

A generator apparatus such as in a cogeneration system has a controlling power supply energized with its generator output with giving no adverse effect on the waveform of its output. An inverter is provided for converting an alternating current output of the engine generator into a direct current and returning back by the action of its inverter circuit to an alternating current of a predetermined frequency which is then connected to a power supply system . While the engine remains not actuated, a power received from a joint between the inverter and the power supply system is rectified by a rectifier and transferred to the controlling power supply . When the engine is started, the power at the input of the inverter circuit is transmitted to the controlling power supply . As the voltage at the input of the inverter circuit is set higher than that at the power supply system side, the energization of the controlling power supply with the power at the input of the inverter circuit can automatically be selected after the start-up of the engine.


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