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:
Dec. 08, 2015
Filed:
Jan. 22, 2014
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Sari Maekawa, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
A motor control device includes a PWM signal generating unit comparing PWM command voltage and carrier wave with each other to generate pulse signal so that duty is increased or decreased in both directions of phase lag and phase lead with one phase within carrier period as reference regarding one phase of three-phase PWM signal. The unit generates pulse signal so that duty is increased or decreased in one of the directions with one phase as reference regarding another phase. The unit generates pulse signal so that duty is increased or decreased in direction reverse to the one direction with one phase as reference regarding the other phase. The unit generates three-phase PWM signal pattern so that a current detecting unit is capable of detecting two-phase current in synchronization with advent of two predetermined time-points within carrier wave period of PWM signal with first to third phases being normally fixed.