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. 08, 2019
Filed:
Oct. 10, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Kazuki Takegawa, Tokyo, JP;
Koji Nakajima, Tokyo, JP;
Satoshi Ishibashi, Tokyo, JP;
Kazuhiko Otsuka, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Abstract
When a motor rotation speed is equal to or greater than a predetermined rotation speed when an automobile collision is detected or when power stops, a motor rotation speed reduction control is carried out by an inverter control unit, and when an inter-terminal voltage of a secondary smoothing capacitor drops below a predetermined voltage during the motor rotation speed reduction control, the motor rotation speed reduction control is stopped, whereby induction voltage caused by motor rotation is applied to the secondary smoothing capacitor, the inter-terminal voltage of the secondary smoothing capacitor is raised, and the motor rotation speed reduction control is carried out while keeping the inter-terminal voltage of the secondary smoothing capacitor within an operating voltage range of the inverter control unit.