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:
Jul. 16, 1996
Filed:
Jun. 01, 1995
Syunichi Hirose, Tokyo, JP;
Nobukazu Takashima, Tokyo, JP;
Susumu Tanaka, Chiba-ken, JP;
Tatsuro Yamaguchi, Kanagawa-ken, JP;
Hidetaka Sato, Ichihara, JP;
Minoru Abe, Tokyo, JP;
Masahito Ooyama, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
The Tokyo Electric Power Company, Incorporated, Tokyo, JP;
Abstract
A control device for a system interconnection inverter. The control device includes an active/reactive current reference generator and an active/reactive current detector for detecting an output AC current of the inverter. The control device further includes a phase detector, a frequency detector, and a voltage amplitude detector of the AC voltage of the inverter. The control device also includes a frequency reference generator and a voltage amplitude reference generator. The control device also includes a frequency correction computing circuit and a voltage amplitude correction computing circuit. The control device further includes an adder for adding the active current reference signal and the voltage amplitude correction signal to output as an active current correction reference signal, and for adding the reactive current reference signal and the frequency correction signal to output as a reactive current correction signal. The control device still further includes a current control circuit for generating an output voltage reference signal for the inverter and a gate control circuit for controlling the output voltage of the inverter based on the output voltage reference signal.