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:
Nov. 04, 2014
Filed:
Mar. 17, 2011
Applicant:
Takayuki Fujita, Shiga, JP;
Inventor:
Takayuki Fujita, Shiga, JP;
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 5/42 (2006.01); H02M 5/458 (2006.01); H02M 7/219 (2006.01);
U.S. Cl.
CPC ...
H02M 5/4585 (2013.01); H02M 7/219 (2013.01);
Abstract
A command value is a current command value with a triangular-like waveform having a cycle that is ⅓ of a cycle of a three-phase voltage. A carrier has a triangular-like waveform having a cycle shorter than the cycle of the command value. Comparison result signals are pulse signals indicating a result of the comparison between the carrier and the command value. In a region of a phase of 30 to 90 degrees, a portion of the comparison result signal present in this region is employed as a gate signal. In a region of a phase of 270 to 330 degrees, a portion of the comparison result signal present in this region is employed as the gate signal.