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. 26, 2016
Filed:
Mar. 01, 2012
Daisuke Hirono, Isesaki, JP;
Daisuke Hirono, Isesaki, JP;
SANDEN CORPORATION, Gunma, JP;
Abstract
Proposed is a motor control device that executes rotational control that follows load fluctuations in a startup mode. The proposed motor control device is provided with: detection meansthat detects a current peak value Ip and a current electrical angle θi based on phase currents Iu to Iw; detection meansthat detects an induced voltage peak value Ep and an induced voltage electrical angle θe based on phase currents Iu to Iw and applied voltages Vu to Vw; rotor position detection meansthat detects a rotor position θm using θm=θi−β−90° or θm=θe−γ−90°; velocity fluctuation detection meansthat detects a rotational velocity ω based on this θm; and startup meansthat outputs a startup voltage instruction value Vp and a startup voltage phase instruction value θv, increases the rotational velocity of the synchronous motor M with predetermined acceleration, and makes the rotational velocity ω detected by the velocity fluctuation detection meansbe reflected in θv.