JPS5629477A - Slow start control device for induction motor - Google Patents

Slow start control device for induction motor

Info

Publication number
JPS5629477A
JPS5629477A JP10368879A JP10368879A JPS5629477A JP S5629477 A JPS5629477 A JP S5629477A JP 10368879 A JP10368879 A JP 10368879A JP 10368879 A JP10368879 A JP 10368879A JP S5629477 A JPS5629477 A JP S5629477A
Authority
JP
Japan
Prior art keywords
circuit
current
current detecting
level
terminal
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
JP10368879A
Other languages
Japanese (ja)
Inventor
Chihiro Ando
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 JP10368879A priority Critical patent/JPS5629477A/en
Publication of JPS5629477A publication Critical patent/JPS5629477A/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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • H02P1/28—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by progressive increase of voltage applied to primary circuit of motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

PURPOSE:To easily set a suitable current detecting level of an induction motor by monitoring the operation of a current detecting acceleration completion discriminator circuit directly by a display circuit. CONSTITUTION:An output terminal d having the same potential as the output terminal c to a phase control circuit for a rectifier connected in antiparallel with the phase S of a motor is newly provided in a current detection acceleration completion discriminator circuit 8, and a resistor 9 as well as the base and the emitter of a transistor 12 are connected between the terminal d and the input terminal b of the input terminals a, b of a T-phase current. A resistor 10 and a photodiode 11 are connected in series between the collector of the transistor 12 and a positive DC power supply terminal VDD. Since the circuit 8 produces an acceleration completion signal to the terminals c, d when the current level becomes lower than a predetermined level, the photodiode 11 is turned off. In this manner, the current detecting level of the circuit 8 can be monitored directly, thereby, the current detecting level can be easily set.
JP10368879A 1979-08-15 1979-08-15 Slow start control device for induction motor Pending JPS5629477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10368879A JPS5629477A (en) 1979-08-15 1979-08-15 Slow start control device for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10368879A JPS5629477A (en) 1979-08-15 1979-08-15 Slow start control device for induction motor

Publications (1)

Publication Number Publication Date
JPS5629477A true JPS5629477A (en) 1981-03-24

Family

ID=14360709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10368879A Pending JPS5629477A (en) 1979-08-15 1979-08-15 Slow start control device for induction motor

Country Status (1)

Country Link
JP (1) JPS5629477A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123480A (en) * 1982-12-28 1984-07-17 Tsubakimoto Chain Co Slow starter for motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123480A (en) * 1982-12-28 1984-07-17 Tsubakimoto Chain Co Slow starter for motor

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