GB1473162A - - Google Patents

Info

Publication number
GB1473162A
GB1473162A GB3188574A GB3188574A GB1473162A GB 1473162 A GB1473162 A GB 1473162A GB 3188574 A GB3188574 A GB 3188574A GB 3188574 A GB3188574 A GB 3188574A GB 1473162 A GB1473162 A GB 1473162A
Authority
GB
United Kingdom
Prior art keywords
current
amplifier
value
input
switch
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.)
Expired
Application number
GB3188574A
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 filed Critical
Publication of GB1473162A publication Critical patent/GB1473162A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G06G7/66—Analogue computers for specific processes, systems or devices, e.g. simulators for control systems
    • 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
    • H02P7/281—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 the DC motor being operated in four quadrants
    • H02P7/2815—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 the DC motor being operated in four quadrants whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

1473162 Automatic current control BBC BROWN BOVERI & CO Ltd 18 July 1974 [20 July 1973] 31885/74 Heading G3R A control amplifier with a feedback capacitor has desired and actual value current inputs and an additional input connectable by switches to either a positive or a negative voltage source. The arrangement reduces response time when the desired input value changes. As shown, a control circuit for supplying the armature current in a D.C. motor fed from a converter includes an amplifier 2 receiving an actual current value input 8 and a desired current value input 7. A control device 12 normally holds switches 13, 14 open so that voltage sources 9, 10 are not connected to the amplifier. If the motor current is to be rapidly reduced, e.g. for reversing, switch 13 is closed so that positive source 9 is connected to the amplifier 2 to simulate a high actual current value and thus reduce the energization. To increase the current again, switch 13 is opened, and the return to a desired value is made more rapid by closing switch 14, thus connecting a source 10, of opposite polarity to the actual value current 7, to the amplifier input for a short time. In modifications, the amplifier feedback path may include a resistor (117), adding a proportional component to the integral characteristic produced by capacitor 3, Fig. 2 (not shown). The resistor (117) is shorted out when the switch 13 is closed so as to improve the response time. A diode circuit, Fig. 3 (not shown), or a reed relay, or a switching transistor such as a FET may be used to short out the resistor (117).
GB3188574A 1973-07-20 1974-07-18 Expired GB1473162A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2336983A DE2336983C2 (en) 1973-07-20 1973-07-20 Controller for a current control of converter-fed drives

Publications (1)

Publication Number Publication Date
GB1473162A true GB1473162A (en) 1977-05-11

Family

ID=5887545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3188574A Expired GB1473162A (en) 1973-07-20 1974-07-18

Country Status (8)

Country Link
AT (1) AT335571B (en)
CH (1) CH570000A5 (en)
DE (1) DE2336983C2 (en)
FR (1) FR2238285B3 (en)
GB (1) GB1473162A (en)
IT (1) IT1017260B (en)
NL (1) NL7409710A (en)
SE (1) SE402987B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2318656A (en) * 1996-10-26 1998-04-29 Bosch Gmbh Robert Controlling a current regulating loop

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241897B (en) * 1967-06-08 400 kV - Forschungsgemeinschaft e. V., Heidelberg Electronic controller
NL158301C (en) * 1967-11-01 1979-09-17 Shell Int Research SYSTEM FOR AUTOMATIC CONTROL OF A PROCESS.
BE758668A (en) * 1969-11-11 1971-04-16 Licentia Gmbh DEVICE FOR REGULATING THE CURRENT OF STATIC CONVERTERS, AND IN PARTICULAR OF MOTORS SUPPLIED WITH RECTIFIED CURRENT, IN THE INTERMITTENT FIELD OR NOT
DE2055473C3 (en) * 1970-10-30 1980-02-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Controller with self-adjusting parameters in power converter systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2318656A (en) * 1996-10-26 1998-04-29 Bosch Gmbh Robert Controlling a current regulating loop
GB2318656B (en) * 1996-10-26 1998-10-28 Bosch Gmbh Robert Method of and control means for controlling a setting member
US5909111A (en) * 1996-10-26 1999-06-01 Robert Bosch Gmbh Method and apparatus for controlling a current

Also Published As

Publication number Publication date
CH570000A5 (en) 1975-11-28
SE402987B (en) 1978-07-24
FR2238285A1 (en) 1975-02-14
FR2238285B3 (en) 1977-05-20
DE2336983C2 (en) 1986-04-24
IT1017260B (en) 1977-07-20
ATA521574A (en) 1976-07-15
NL7409710A (en) 1975-01-22
SE7409344L (en) 1975-01-21
AT335571B (en) 1977-03-25
DE2336983A1 (en) 1975-02-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee