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. 25, 2010
Filed:
Aug. 03, 2006
Hidetoshi Kitanaka, Chiyoda-ku, JP;
Hideto Negoro, Chiyoda-ku, JP;
Hidetoshi Kitanaka, Chiyoda-ku, JP;
Hideto Negoro, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
The vector control device includes: secondary magnetic flux command computing means () for computing a secondary magnetic flux command to an induction motor () by taking a maximum voltage that an inverter () can generate into account on a basis of a torque command from an external, a DC voltage to be inputted into the inverter, and an inverter angular frequency, which is an angular frequency of an AC voltage to be outputted from the inverter; q-axis/d-axis current command generating means (and) for generating a q-axis current command and a d-axis current command on a d-q axes rotating coordinate system in reference to a secondary magnetic flux of the induction motor () on a basis of the torque command and the secondary magnetic flux command; output voltage computing means (voltage non-interference computation portion, adder, and adder) for computing an output voltage that the inverter () is to output on a basis of the q-axis current command, the d-axis current command, and a circuit constant of the induction motor (); and voltage command/PWM signal generating means () for controlling the inverter () for the inverter () to output the output voltage.