JPS5629478A - Slow start control device for three-phase induction motor - Google Patents

Slow start control device for three-phase induction motor

Info

Publication number
JPS5629478A
JPS5629478A JP10369479A JP10369479A JPS5629478A JP S5629478 A JPS5629478 A JP S5629478A JP 10369479 A JP10369479 A JP 10369479A JP 10369479 A JP10369479 A JP 10369479A JP S5629478 A JPS5629478 A JP S5629478A
Authority
JP
Japan
Prior art keywords
resistor
induction motor
phase induction
discriminator circuit
control device
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
JP10369479A
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 JP10369479A priority Critical patent/JPS5629478A/en
Publication of JPS5629478A publication Critical patent/JPS5629478A/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 regulate a current detecting level in response to the capacitor of a three-phase induction motor in wide range by providing a current detecting level regulating variable resistor and shortcircuit enable resistor in a discriminator circuit for current detection acceleration completion. CONSTITUTION:The output of a current transformer 4 is full-wave rectified by a rectifier 5, is divided through variator resistor 6 and resistors 41, 42, 43, and is then applied to an acceleration completion discriminator circuit 3. The resistor 43 has terminals a, b for shorting the resistor 43. In this manner, since the divided output level can be regulated by switching the notches of a variable resistor 6 or by shorting the terminals a, b, the current detecting level of the acceleration completion discriminator circuit 3 can be regulated in response to the capacitor of the motor.
JP10369479A 1979-08-15 1979-08-15 Slow start control device for three-phase induction motor Pending JPS5629478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10369479A JPS5629478A (en) 1979-08-15 1979-08-15 Slow start control device for three-phase induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10369479A JPS5629478A (en) 1979-08-15 1979-08-15 Slow start control device for three-phase induction motor

Publications (1)

Publication Number Publication Date
JPS5629478A true JPS5629478A (en) 1981-03-24

Family

ID=14360881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10369479A Pending JPS5629478A (en) 1979-08-15 1979-08-15 Slow start control device for three-phase induction motor

Country Status (1)

Country Link
JP (1) JPS5629478A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4959747A (en) * 1985-04-15 1990-09-25 Siemens Aktiengesellschaft Circuit arrangement for current limiting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4959747A (en) * 1985-04-15 1990-09-25 Siemens Aktiengesellschaft Circuit arrangement for current limiting

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