JPS566697A - Preventing device for short circuit between lines of thyristor leonard system - Google Patents

Preventing device for short circuit between lines of thyristor leonard system

Info

Publication number
JPS566697A
JPS566697A JP7914979A JP7914979A JPS566697A JP S566697 A JPS566697 A JP S566697A JP 7914979 A JP7914979 A JP 7914979A JP 7914979 A JP7914979 A JP 7914979A JP S566697 A JPS566697 A JP S566697A
Authority
JP
Japan
Prior art keywords
vbeta
current flowing
voltage
phase shifter
lines
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
JP7914979A
Other languages
Japanese (ja)
Inventor
Izumi Kobayashi
Hisahiro Tanigawa
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.)
Reliance Electric Ltd
Original Assignee
Reliance Electric 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 Reliance Electric Ltd filed Critical Reliance Electric Ltd
Priority to JP7914979A priority Critical patent/JPS566697A/en
Publication of JPS566697A publication Critical patent/JPS566697A/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
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
    • H02P7/293—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC using phase control

Landscapes

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

Abstract

PURPOSE:To surely prevent a short circuit between lines, by directly calculating a current flowing period from the ignition phase of a gate and shutting off the gates of a thyristor bridge opposite an operating side. CONSTITUTION:An input to a gate phase shifter 3 and an input V2 applied to another gate phase shifter 4 through a polarity inverter 13 are voltages proportional to an ignition angle alpha. The output VN of a speed detector 12 is proportional to the speed of a DC motor. A subtracter 14 calculates the difference between voltages Valpha, VN. An output Vbeta passed through an amplifier 15 is a voltage proportional to a turn-on angle beta. The polarity of the voltage Vbeta is discriminated. When the voltage Vbeta is positive, an operation inhibiting instruction is applied from a negative side current flowing time calculator 17 to the gate phase shifter 4. When the voltage Vbeta is negative, an operation inhibiting instruction is applied from a positive side current flowing time calculator 16 to the other gate phase shifter 3. As a result, the gates of an opposite side thyristor bridge are not ignitied during a current flowing period to prevent a short circuit between lines.
JP7914979A 1979-06-25 1979-06-25 Preventing device for short circuit between lines of thyristor leonard system Pending JPS566697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7914979A JPS566697A (en) 1979-06-25 1979-06-25 Preventing device for short circuit between lines of thyristor leonard system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7914979A JPS566697A (en) 1979-06-25 1979-06-25 Preventing device for short circuit between lines of thyristor leonard system

Publications (1)

Publication Number Publication Date
JPS566697A true JPS566697A (en) 1981-01-23

Family

ID=13681894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7914979A Pending JPS566697A (en) 1979-06-25 1979-06-25 Preventing device for short circuit between lines of thyristor leonard system

Country Status (1)

Country Link
JP (1) JPS566697A (en)

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