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. 10, 2006
Filed:
Sep. 30, 2003
Shigeru Tajima, Wako, JP;
Hideki Inoue, Wako, JP;
Shigeru Tajima, Wako, JP;
Hideki Inoue, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
While a rotorof a permanent-magnet rotary machineis rotating and an armature current thereof is substantially zero, a motor controllerperforms a dq vector control process to control the permanent-magnet rotary machinein a dq coordinate system which has a d-axis representing the direction of a magnetic field of the rotorand a q-axis representing a direction perpendicular to the d-axis, and determines a magnetic pole position correcting quantity θofs to correct a magnetic pole position θact detected by a magnetic pole position detectorso that a d-axis voltage command value Vdc determined by the dq vector control process will be substantially zero. The motor controllercontrols the phases of armature voltages Vuc, Vvc, Vwc with magnetic pole positions corrected by the magnetic pole position correcting quantity θofs. Irrespective of whether the rotary machineis a cylindrical machine or a salient-pole machine, the detected values of magnetic pole positions are appropriately corrected according to a simple process without the need for a voltage detector for thereby efficiently controlling operation of the permanent-magnet rotary machine