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:
Feb. 06, 1996
Filed:
Apr. 01, 1993
Masahiko Iwasaki, Nagoya, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An inverter apparatus and a transport system using the same comprises a pair of current detectors for detecting output currents of at least two phases of output currents of three phases, a pair of converters for converting detected currents to two axes extending perpendicularly to each other, which are rotated in synchronism with output frequency of the inverter apparatus by an orthogonal projection, a computer for adding frequency correcting set frequency with respect to output voltage and the set frequency set from the outside, in accordance with current converted to the two axes, and for deciding predetermined output voltage and output frequency by the set frequency regardless of the current, and a switch in which ON/OFF can be assigned from the outside.