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. 24, 2017
Filed:
Sep. 26, 2012
Masato Ito, Chiyoda-ku, JP;
Yosuke Hachiya, Chiyoda-ku, JP;
Satoru Terashima, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A control device for AC rotary machine includes a current vector detection section (), a magnetic flux vector detection section (), an adaptive observation section (), a control section (), a voltage application section (), a deviation vector calculation section () for outputting a current deviation vector and a magnetic flux deviation vector, and a deviation amplification section (). The adaptive observation section () calculates an estimated current vector, an estimated magnetic flux vector, and an estimated position, based on a voltage instruction vector and an amplified deviation vector. Further, the control section () superimposes a high-frequency voltage vector, and the magnetic flux vector detection section () calculates a detected magnetic flux vector, based on a magnitude of a high-frequency current vector having the same frequency component as the high-frequency voltage vector, included in a detected current vector, and on a magnitude of a rotor magnetic flux.