JPS56101386A - Braking device for dc motor - Google Patents

Braking device for dc motor

Info

Publication number
JPS56101386A
JPS56101386A JP129480A JP129480A JPS56101386A JP S56101386 A JPS56101386 A JP S56101386A JP 129480 A JP129480 A JP 129480A JP 129480 A JP129480 A JP 129480A JP S56101386 A JPS56101386 A JP S56101386A
Authority
JP
Japan
Prior art keywords
contactors
motor
field winding
field
power source
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.)
Pending
Application number
JP129480A
Other languages
Japanese (ja)
Inventor
Tatsuaki Ishikawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP129480A priority Critical patent/JPS56101386A/en
Publication of JPS56101386A publication Critical patent/JPS56101386A/en
Pending 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

Abstract

PURPOSE:To enable braking of the DC motor at the time of power source failure by operating separately exciting field winding and shunt field winding as series winding field at the time of power source failure and utilizing the field winding having large resistance value as regenerating braking resistor. CONSTITUTION:The contacts of contactors 5-8 are closed and the contacts of contactors 9, 10 are opended at the time of normal operation. The field winding 2 becomes separately exciting field to enable stable operation which is hardly affected by the load current as a separately exciting motor. When the power source is failed, the control power sources for the respective contactors fails. Accordingly, the contactors 5-8 are opened, while the contactors 8, 9 are closes, and the DC motor operated as the separetely exciting motor fails. Consequently, it operates as a series generator to absorb the generating electric power with the field winding 2 as a load resistance and to thus brake it.
JP129480A 1980-01-11 1980-01-11 Braking device for dc motor Pending JPS56101386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP129480A JPS56101386A (en) 1980-01-11 1980-01-11 Braking device for dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP129480A JPS56101386A (en) 1980-01-11 1980-01-11 Braking device for dc motor

Publications (1)

Publication Number Publication Date
JPS56101386A true JPS56101386A (en) 1981-08-13

Family

ID=11497439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP129480A Pending JPS56101386A (en) 1980-01-11 1980-01-11 Braking device for dc motor

Country Status (1)

Country Link
JP (1) JPS56101386A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5969303A (en) * 1998-03-17 1999-10-19 Inventio Ag Emergency stop circuit for a direct current elevator drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5969303A (en) * 1998-03-17 1999-10-19 Inventio Ag Emergency stop circuit for a direct current elevator drive

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