JPS5713985A - Braking circuit for induction motor - Google Patents

Braking circuit for induction motor

Info

Publication number
JPS5713985A
JPS5713985A JP8694780A JP8694780A JPS5713985A JP S5713985 A JPS5713985 A JP S5713985A JP 8694780 A JP8694780 A JP 8694780A JP 8694780 A JP8694780 A JP 8694780A JP S5713985 A JPS5713985 A JP S5713985A
Authority
JP
Japan
Prior art keywords
voltage
braking
induction motor
output
comparator
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
JP8694780A
Other languages
Japanese (ja)
Other versions
JPH039716B2 (en
Inventor
Masahiko Iwata
Hiroshi Hayashi
Shigeru Tanaka
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.)
Shinko Electric Co Ltd
Original Assignee
Shinko 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 Shinko Electric Co Ltd filed Critical Shinko Electric Co Ltd
Priority to JP8694780A priority Critical patent/JPS5713985A/en
Publication of JPS5713985A publication Critical patent/JPS5713985A/en
Publication of JPH039716B2 publication Critical patent/JPH039716B2/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
    • H02P3/18—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 an ac motor
    • H02P3/24—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 an ac motor by applying dc to the motor

Landscapes

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

Abstract

PURPOSE:To apply a DC braking without damage to an induction motor with a simple circuitry by stopping a basic clock of an inverter when a DC voltage lowers down to the level the same as the braking voltage applied to a converter at braking. CONSTITUTION:When an input ''1'' is applied to a control terminal C as braking command, the output of a comparator 19 is ''0'' while DC power supply voltage VP is higher than voltage braking voltage VB. A voltage adjustor 3 sends the voltage VB and the torque of an induction motor 10 with a gradual drop of the voltage VP. When VP=VB, the output of a comparator 19 goes to ''1'' while the output of an AND gate 11 to ''1''. Consequently, the input of a ramp wave generator 13 moves to ''0'' and the application of the oscillation frequency to a ring counter 17 is stopped. Therefore, an inverter 2 is stopped at any one of six driving modes and a DC voltage is applied to a stator winding of the induction motor 10 as an exciting voltage at a lower level that the DC power supply voltage at the normal time.
JP8694780A 1980-06-26 1980-06-26 Braking circuit for induction motor Granted JPS5713985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8694780A JPS5713985A (en) 1980-06-26 1980-06-26 Braking circuit for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8694780A JPS5713985A (en) 1980-06-26 1980-06-26 Braking circuit for induction motor

Publications (2)

Publication Number Publication Date
JPS5713985A true JPS5713985A (en) 1982-01-25
JPH039716B2 JPH039716B2 (en) 1991-02-12

Family

ID=13901056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8694780A Granted JPS5713985A (en) 1980-06-26 1980-06-26 Braking circuit for induction motor

Country Status (1)

Country Link
JP (1) JPS5713985A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179188A (en) * 1982-04-13 1983-10-20 Shinko Electric Co Ltd Braking method for induction motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436518A (en) * 1977-08-26 1979-03-17 Toshiba Corp Controller for ac motor
JPS5553195A (en) * 1978-10-12 1980-04-18 Toshiba Corp Ac motor speed control device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436518A (en) * 1977-08-26 1979-03-17 Toshiba Corp Controller for ac motor
JPS5553195A (en) * 1978-10-12 1980-04-18 Toshiba Corp Ac motor speed control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179188A (en) * 1982-04-13 1983-10-20 Shinko Electric Co Ltd Braking method for induction motor

Also Published As

Publication number Publication date
JPH039716B2 (en) 1991-02-12

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