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:
Nov. 09, 1982
Filed:
Jun. 27, 1980
Applicant:
Inventors:
Takanobu Iwakane, Kitakyushu, JP;
Tohru Kai, Kitakyushu, JP;
Kenji Hirose, Kitakyushu, JP;
Koichiro Nakagawa, Kitakyushu, JP;
Assignee:
Kabushiki Kaisha Yaskawa Denki Seisakusho, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ; H02P / ;
U.S. Cl.
CPC ...
318798 ; 318806 ;
Abstract
There is disclosed a current type inverter excellent in transient response which comprises a two-phase sine wave generator for receiving signals corresponding to a motor speed signal and a speed deviation signal, to provide sine waves shifted 90.degree. in phase, and a vector calculating circuit for calculating stator current instruction vectors from exciting current components and torque current components, the outputs of the vector calculating circuit being applied as frequency instruction signals of a conventional current type inverter.