VARIABLE-SPEED GENERATOR

Title:

VARIABLE-SPEED GENERATOR

Document Type and Number:

Japanese Patent JPS63178800

Kind Code:

A

Abstract:

PURPOSE: To enable a generator quickly to perform the juxtaposed reentry to a system, keeping no-load effective exciting condition even when the load is cut out, by giving no frequency beyond allowable limits to a frequency converter.

CONSTITUTION: To a single feeder to send control signals in a frequency converter 9 are provided the first reference frequency device 11a where the frequency in the system constitutes a function a and the second reference frequency device 11b generating specified frequency. In addition, in a circuit to control the frequency converter 9 is provided a changeover switching device 16 where in the normal operation of a variable-speed generator 5 the output of the first frequency device 11a turns out the control signal of a frequency control device 10 and in the load runout of the variable-speed generator 5 the output of the second reference generator 11b turns out the control signal of the frequency control device 10.

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Inventors:

FURUKAWA YOSHIO
YASAKA YASUHIRO
NAGURA OSAMU
HARAGUCHI EIJI
NAKAGAWA HIROTO
ONO YASUTERU

Application Number:

JP806187A

Publication Date:

July 22, 1988

Filing Date:

January 19, 1987

Export Citation:

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Assignee:

HITACHI LTD
KANSAI ELECTRIC POWER CO

International Classes:

H02P9/00; H02P9/14; H02P9/42; (IPC1-7): H02P9/14

Domestic Patent References:

JPS58107099A	1983-06-25
JPS5812595A	1983-01-24

Attorney, Agent or Firm:

Katsuo Ogawa

Previous Patent: JPS63178799

Next Patent: OPERATION OF THIN FILM DRYER