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:
May. 21, 2013
Filed:
Feb. 25, 2011
Hiroya Tsuji, Yokkaichi, JP;
Tatsuru Morioka, Okazaki, JP;
Hiroshi Inamura, Nagoya, JP;
Takahumi Oowada, Kariya, JP;
Hiroya Tsuji, Yokkaichi, JP;
Tatsuru Morioka, Okazaki, JP;
Hiroshi Inamura, Nagoya, JP;
Takahumi Oowada, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
A control apparatus for use with an electric power conversion system which is equipped with a dc/ac converter connected to an electric rotating machine and a capacitor joined to input terminals of the dc/ac converter. The control apparatus stores an angle of rotation (i.e., start angle θ) of the electric rotating machine before start of control of energization of the electric rotating machine to discharge the capacitor and determines command currents idr and iqr which will result in zero (0) torque in the electric rotating machine. The control apparatus includes a command current correcting circuit which corrects the command currents idr and iqr by a difference between a current angle θ of rotation of the electric rotating machine and the start angle θ, thereby avoiding constant rotation of the electric rotating machine when the capacitor is discharged.