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:
Sep. 15, 2009
Filed:
Jan. 11, 2008
Hajime Nakamura, Hyogo, JP;
Shoji Yoshimura, Takasago, JP;
Makoto Nakamura, Takasago, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A power generating device according to the present invention has a positive displacement steam expander for converting expansion of steam into a rotational force, a power generator connected to a rotational axis of the positive displacement steam expander, an inverter for setting an operational frequency of the power generator, a power detector for detecting generated electric power of the power generator, and control means for changing set frequency of the inverter in accordance with a deviation of the generated electric power detected by the power detector from a target value. According to such a configuration, it is possible to sustain high output of the power generator irrespective of a differential pressure between primary side steam and secondary side steam.