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. 09, 2026
Filed:
Aug. 23, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Kota Teramoto, Tokyo, JP;
Toshiki Suzuki, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A control apparatus includes: a current detection unit detecting rotary machine current flowing to a rotary machine; a position estimation unit calculating an estimate value of a rotor position based on the rotary machine current; a current control unit generating a first voltage command being a command value of rotary machine voltage for driving the rotary machine, based on a detection value of the rotary machine current and the estimate value of the rotor position; a position estimation voltage generation unit generating high-frequency voltage based on rotation information regarding direction of rotation of a rotor, the high-frequency voltage being a position estimation voltage for estimating the rotor position and having frequency higher than frequency of the first voltage command; and a voltage application device applying driving voltage to the rotary machine based on a second voltage command obtained by superimposition of the position estimation voltage on the first voltage command.