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:
Jul. 08, 2014
Filed:
May. 07, 2010
Takayuki Fujita, Shiga, JP;
Kenichi Sakakibara, Shiga, JP;
Takayuki Fujita, Shiga, JP;
Kenichi Sakakibara, Shiga, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A converter section () includes three pairs of switching elements (Srp, . . . , Stn), each pair having two switching elements connected in series between two direct current links (L, L), and phases of an input three-phase alternating current are connected to nodes between the series-connected switching elements one by one. Each of the switching elements (Srp, . . . , Stn) is made of a transistor having a bipolar structure. The control unit () controls the switching elements (Srp, . . . , Stn) such that line voltages between a reference phase, which is one of the phases of the input three-phase alternating current, and each of the other phases are output to the two direct current links (L, L) on a time division basis. The control unit () applies a predetermined gate voltage to one or more of the switching elements (Srp, . . . , Stn) to which a reverse bias is applied.