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:
Oct. 13, 2015
Filed:
Jan. 18, 2013
Tomoya Tachibana, Chiyoda-ku, JP;
Takeshi Mori, Chiyoda-ku, JP;
Mitsuharu Hashiba, Chiyoda-ku, JP;
Masaya Inoue, Chiyoda-ku, JP;
Moriyuki Hazeyama, Chiyoda-ku, JP;
Tomoya Tachibana, Chiyoda-ku, JP;
Takeshi Mori, Chiyoda-ku, JP;
Mitsuharu Hashiba, Chiyoda-ku, JP;
Masaya Inoue, Chiyoda-ku, JP;
Moriyuki Hazeyama, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A control device for a permanent magnet motor, including: a rotor position detector configured to detect a rotating speed of a rotor of a permanent magnet motor in a state in which the permanent magnet motor is disconnected from a load by a clutch and rotates without power supply; a magnet temperature estimator configured to estimate a magnet temperature of the permanent magnet motor based on the detected rotating speed; a current compensator configured to determine a compensation amount for compensating for a current command to the permanent magnet motor based on the estimated magnet temperature; and a drive control device configured to control a power converter for driving the permanent magnet motor based on the compensation amount.