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. 25, 2012
Filed:
Jan. 31, 2008
Katsumi Maekawa, Minato-ku, JP;
Kazuya Yasui, Minato-ku, JP;
Kentaro Suzuki, Minato-ku, JP;
Yuichi Shiozaki, Minato-ku, JP;
Katsumi Maekawa, Minato-ku, JP;
Kazuya Yasui, Minato-ku, JP;
Kentaro Suzuki, Minato-ku, JP;
Yuichi Shiozaki, Minato-ku, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
There is provided a current tracking PWM control circuit that directly generates PWM signals such that inverter output currents id, iq track PWM current references id**, iq**, using the results of comparison of the inverter output currents id, iq and PWM current references id**, iq**, in which, if current references id*, iq* exist, the result of adding the original current reference iq* and a correction signal iqC*, obtained by amplifying the deviation (iq*-iq) of the current reference iq* and iq, is used as the PWM current reference iq** on the q axis side for performing current control, but, in respect of the d axis side, the original current reference id* is used directly as the PWM current reference id** for performing current control.