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. 29, 2016
Filed:
Mar. 30, 2012
Tingan Lee, Chuo-ku, JP;
Masahiro Kinoshita, Chuo-ku, JP;
Nobuyuki Nagai, Chuo-ku, JP;
Kazunori Sanada, Chuo-ku, JP;
Tingan Lee, Chuo-ku, JP;
Masahiro Kinoshita, Chuo-ku, JP;
Nobuyuki Nagai, Chuo-ku, JP;
Kazunori Sanada, Chuo-ku, JP;
Abstract
A power conversion circuit connected to a three phase alternating current line is controlled in a PWM system. To control an arm corresponding to each phase, first to third carrier wave signals are generated. The first to third carrier wave signals include two signals having phases, respectively, offset by 180 degrees from each other. This allows a zero phase component to less frequently reach a peak value and be accordingly reduced as time averaged. This can reduce a zero phase harmonic component generated from a power supply apparatus.