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. 14, 2007
Filed:
Aug. 22, 2006
Masahiko Endou, Numazu, JP;
Masanori Nakagawa, Numazu, JP;
Kaoru Shinba, Numazu, JP;
Katsumi Yamamoto, Numazu, JP;
Yoshihiro Sugisawa, Numazu, JP;
Masahiko Endou, Numazu, JP;
Masanori Nakagawa, Numazu, JP;
Kaoru Shinba, Numazu, JP;
Katsumi Yamamoto, Numazu, JP;
Yoshihiro Sugisawa, Numazu, JP;
Kokusan Denki Co., Ltd., Numazu-shi, JP;
Abstract
An inverter controlled generator set including: a power supply unit that uses a generator driven by an engine as a power supply to output a DC voltage; an inverter device that converts the output voltage of the power supply unit into an AC voltage; and a rotational speed control unit that controls a rotational speed of the engine so as to be kept at a target rotational speed suitable for a load applied to the inverter device, wherein the rotational speed control unit is comprised so that a settling time when the rotational speed of the engine is caused to converge to the target rotational speed in a state where the load is above a set value is longer than a settling time when the rotational speed is caused to converge to the target rotational speed in a state where the load is below the set value, in order to minimize an operation sound of the engine when the load is intermittently driven.