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:
Jan. 05, 2021
Filed:
Apr. 17, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Akira Hatano, Toyota, JP;
Yu Sasaki, Toyota, JP;
Yoshihiro Okumatsu, Nagakute, JP;
Hiroyuki Iyama, Okazaki, JP;
Yuki Nomura, Seto, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A motor control apparatus includes an inverter comprising switching elements, current detection means for detecting a phase current value output from the inverter to each phase of a three-phase AC motor, conversion means for converting the phase current value into a digital AD conversion value, and modulation means for comparing a phase voltage command value based on the AD conversion value from the conversion means with a PWM counter value generated using a timer operating at predetermined cycles to generate a PWM signal and outputting the generated PWM signal to the inverter to thereby switch the switching elements of the inverter and control the three-phase AC motor. The conversion means outputs the AD conversion value acquired by converting the phase current value at a timing when a rectangular width of a rectangular wave of a phase voltage value corresponding to the PWM counter value is long.