JPS57122681A - Preexcitation apparatus - Google Patents

Preexcitation apparatus

Info

Publication number
JPS57122681A
JPS57122681A JP734181A JP734181A JPS57122681A JP S57122681 A JPS57122681 A JP S57122681A JP 734181 A JP734181 A JP 734181A JP 734181 A JP734181 A JP 734181A JP S57122681 A JPS57122681 A JP S57122681A
Authority
JP
Japan
Prior art keywords
switch
preexcitation
circuit
braking
closing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP734181A
Other languages
Japanese (ja)
Other versions
JPS649831B2 (en
Inventor
Takashi Emoto
Tomohito Noda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP734181A priority Critical patent/JPS57122681A/en
Publication of JPS57122681A publication Critical patent/JPS57122681A/en
Publication of JPS649831B2 publication Critical patent/JPS649831B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
    • H02P3/12—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor by short-circuit or resistive braking

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

PURPOSE:To prevent a flashover of a motor and breakage of a rectifier circuit by connecting the output terminal of the rectifier circuit to both ends of a field winding through a switch for closing the circuit for braking. CONSTITUTION:When stopping a motor, a main circuit on/off switch is opened to separate a motor from a DC power source while opening a field short-circuiting switch 12. Then, a switch for closing the circuit for braking and successively a preexcitation switch 13 is closed to start the preexcitation of a field winding 7. In a specified time after the start of the preexcitation, the dynamic braking is initiated. Therefore, because outputs of rectifier circuits 14a-14d are supplied to not only to the preexcitation switch 13 but also to the field winding 7 through a switch 11 for closing the circuit when braking, no over current flows to an armature from the rectifier circuits 14a-14d, even in case an accident at closed circuit due to fusing or malfunctioning or the like occurs in the preexcitation switch 13 during the power operation.
JP734181A 1981-01-21 1981-01-21 Preexcitation apparatus Granted JPS57122681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP734181A JPS57122681A (en) 1981-01-21 1981-01-21 Preexcitation apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP734181A JPS57122681A (en) 1981-01-21 1981-01-21 Preexcitation apparatus

Publications (2)

Publication Number Publication Date
JPS57122681A true JPS57122681A (en) 1982-07-30
JPS649831B2 JPS649831B2 (en) 1989-02-20

Family

ID=11663232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP734181A Granted JPS57122681A (en) 1981-01-21 1981-01-21 Preexcitation apparatus

Country Status (1)

Country Link
JP (1) JPS57122681A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096994U (en) * 1983-12-05 1985-07-02 株式会社明電舎 DC motor control device
JPH04305850A (en) * 1991-04-02 1992-10-28 Mitsubishi Electric Corp Tape tension control mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02125827U (en) * 1989-03-28 1990-10-17

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4950423A (en) * 1972-09-21 1974-05-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4950423A (en) * 1972-09-21 1974-05-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096994U (en) * 1983-12-05 1985-07-02 株式会社明電舎 DC motor control device
JPH04305850A (en) * 1991-04-02 1992-10-28 Mitsubishi Electric Corp Tape tension control mechanism

Also Published As

Publication number Publication date
JPS649831B2 (en) 1989-02-20

Similar Documents

Publication Publication Date Title
JPS5695247A (en) Image forming device
ES2003007A6 (en) Circuit for operating a multiphase synchronous motor on a d.c. network.
JPS57122681A (en) Preexcitation apparatus
JPS5438521A (en) Power source equipment
JPS54114712A (en) Control unit for synchronous machine
JPS56129501A (en) Controller for car
JPS5666186A (en) Starting circuit in single-phase induction motor
JPS57148597A (en) Exciter for generator
JPS56126321A (en) Delay working power supply device
JPS6443038A (en) On-vehicle load power supplying circuit
JPS5343316A (en) Operation control system for electric car
FR2326795A1 (en) Starting winding disconnection circuit for AC motor - has time delay circuit forming source of triggering current for gate closing power terminals switch
JPS57180356A (en) Exciter for synchronous machine
JPS599570A (en) Method for testing switching life of capacitor of switch apparatus
JPS54115726A (en) Electric brake for generator motor
SU1201079A1 (en) Welding apparatus
JPS56133992A (en) Braking device for synchronous machine
JPH08119007A (en) Overvoltage prevention device of section changeover device in ac feeding facility
JPS5475513A (en) Exiting device of self-exciting alternating current generator
JPS55150800A (en) Exciter of synchronous generator
Wyatt Operating experience with automatic equipment on an Edison system
JPS56125901A (en) Controlling device of motor-generator for electric rolling stock
JPS5746684A (en) Starter for rotary electric machine
JPS5210542A (en) Protection device for static ward-leonard system
IT1046992B (en) Disconnection device for non-essential car circuits - has relay opening circuit if voltage falls below set level