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:
Jun. 02, 2015
Filed:
Jul. 11, 2013
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, Aichi-ken, JP;
Tomohiro Ohba, Kariya, JP;
Toshiaki Nagase, Kariya, JP;
Tomohiro Yamagami, Kariya, JP;
Naohito Kanie, Kariya, JP;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Aichi, JP;
Abstract
An inverter includes a warm-up control section and a switching control section. In a state in which an electric motor is not operating, the warm-up control section controls switching elements of an inverter circuit to perform warm-up control, in which direct currents are supplied to the coils of the respective phases of the electric motor, when the temperature of the capacitor is lower than a prescribed temperature. When a warm-up control is switched to a normal operation control, the switching control section sets initial phases of alternating currents such that the relationship between the values of the alternating currents supplied to the coils of the electric motor in the normal operation control matches with the relationship between the values of the direct currents that have been supplied to the corresponding coils of the electric motor in the warm-up control.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile