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. 11, 2000
Filed:
Mar. 15, 1999
Takafumi Maruyama, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
To obtain a control apparatus for a Diesel-electric locomotive that harmonizes an engine power with a torque command of an induction motor, which is a load of an engine, in the Diesel-electric locomotive and avoids an overload of the engine. A cooperative controller 15 is provided, the controller 15 which receives a notch signal N, an engine speed command value n* corresponding to the notch signal N, an engine speed n, and rotating speed fr of an induction motor 17, calculates a torque command value Tp corresponding to the engine speed n from torque command values before and after the notch signal changing during response time for control of the engine speed if the notch signal N changes, and calculates the torque command value Tp corresponding to the notch signal N after a notch is changed, except the case thereof. Furthermore, the torque command value Tp is outputted to an inverter controller 20.