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:
Jun. 01, 2010
Filed:
Dec. 12, 2007
Masaya Ichinose, Hitachiota, JP;
Shinya Oohara, Hitachi, JP;
Motoo Futami, Hitachiota, JP;
Mitsugu Matsutake, Hitachi, JP;
Masaya Ichinose, Hitachiota, JP;
Shinya Oohara, Hitachi, JP;
Motoo Futami, Hitachiota, JP;
Mitsugu Matsutake, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A wind power generation system includes: a wind turbine in which at least one blade is mounted on an axis; a generator for generating multiphase alternating current power by rotation of the axis; and a multiphase power conversion device for performing PWM-control for adjustment and output of generated power of the generator. With the configuration, the PWM-control provides for each phase a control paused period in which no overlap occurs. Thus, the pulse density between the control period and the control paused period of other phases is low, thereby generating high and low density in an inter-phase pulse.