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:
Jul. 18, 2017
Filed:
Mar. 14, 2016
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, Aichi-ken, JP;
Kazuki Najima, Kariya, JP;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Aichi-ken, JP;
Abstract
The controller controls an inverter that drives an in-vehicle three-phase motor. The controller includes a voltage application unit, a current obtaining unit, an addition unit, an addition conversion unit, and a derivation unit. The current obtaining unit obtains a positive current and a negative current flowing to each of the three phases. The addition unit adds the positive current and the negative current flowing to each phase. The addition conversion unit performs a three-phase to two-phase conversion on the three addition values. The derivation unit derives a magnetic pole position of the rotor, when the rotor is stopped, based on the conversion result of the addition conversion unit.