JPS56145796A - Detecting circuit for maximum current - Google Patents

Detecting circuit for maximum current

Info

Publication number
JPS56145796A
JPS56145796A JP4796380A JP4796380A JPS56145796A JP S56145796 A JPS56145796 A JP S56145796A JP 4796380 A JP4796380 A JP 4796380A JP 4796380 A JP4796380 A JP 4796380A JP S56145796 A JPS56145796 A JP S56145796A
Authority
JP
Japan
Prior art keywords
current
motors
overload
motor under
appliance
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
JP4796380A
Other languages
Japanese (ja)
Inventor
Yoshikazu Watanabe
Yukio Asakawa
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 JP4796380A priority Critical patent/JPS56145796A/en
Publication of JPS56145796A publication Critical patent/JPS56145796A/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
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/68—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more dc dynamo-electric motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

PURPOSE:To control a DC motor under an overload condition so as not to be tripped by flowing currents flowing in by the counterelectromotive voltage of other DC motors through a thyristor transducer regarding the DC motor under the overload condition. CONSTITUTION:When one or two or more DC motors among DC motors 5, 5... are brought to overload, currents obtained from a DC current appliance 14 of the motor under overload are output from a current detector 16 through a composing circuit 15. The output of the current detector 16 is forwarded to a current commanding appliance 9 through a comparator 17A or 17B. The output of the current commanding appliance 9 is transmitted to a thyristor transducer 4 through a current regulator 11 and an automatic pulse shifter 12, and the counterelectromotive force of the DC motors 5, 5... except the motor under overload is recovered.
JP4796380A 1980-04-14 1980-04-14 Detecting circuit for maximum current Pending JPS56145796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4796380A JPS56145796A (en) 1980-04-14 1980-04-14 Detecting circuit for maximum current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4796380A JPS56145796A (en) 1980-04-14 1980-04-14 Detecting circuit for maximum current

Publications (1)

Publication Number Publication Date
JPS56145796A true JPS56145796A (en) 1981-11-12

Family

ID=12789987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4796380A Pending JPS56145796A (en) 1980-04-14 1980-04-14 Detecting circuit for maximum current

Country Status (1)

Country Link
JP (1) JPS56145796A (en)

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