GB738705A - Improvements relating to electric motor control systems - Google Patents

Improvements relating to electric motor control systems

Info

Publication number
GB738705A
GB738705A GB1936153A GB1936153A GB738705A GB 738705 A GB738705 A GB 738705A GB 1936153 A GB1936153 A GB 1936153A GB 1936153 A GB1936153 A GB 1936153A GB 738705 A GB738705 A GB 738705A
Authority
GB
United Kingdom
Prior art keywords
motor
generator
amplifier
voltage
control
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
GB1936153A
Inventor
Denis Bolton
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1936153A priority Critical patent/GB738705A/en
Publication of GB738705A publication Critical patent/GB738705A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D15/00Control of mechanical force or stress; Control of mechanical pressure
    • G05D15/01Control of mechanical force or stress; Control of mechanical pressure characterised by the use of electric means

Abstract

738,705. Automatic tension control systems. BRITISH THOMSON-HOUSTON CO., Ltd. June 28, 1954 [July 13, 1953], No. 19361/53. Class 38 (4). In a constant tension control system for a Ward-Leonard strip-coiler drive, both the generator and motor excitation is controlled through magnetic amplifiers, the generator being controlled to maintain constant current and the motor to maintain a constant ratio between motor voltage and strip speed. Provision is made to limit the rise in generator voltage when, for any reason, the mechanical load is removed from the motor. Generator control.-As shown, the generator G has its field FG supplied by a main magnetic amplifier A, which is controlled (i) by a magnetic amplifier Al (having a reversible output) in accordance with the difference between a reference voltage B and the drop across a resistance R in the Ward-Leonard loop, and (ii) by a tachometer generator T responsive to strip speed, in order to relieved the burden on the current-control-amplifier Al and increase its accuracy over the range of mill speed. Motor control.-The motor field Fm is supplied through a main magnetic amplifier A3 controlled by a resistance RH which is operated by a reversible motor M1 energized by a magnetic amplifier A2 in accordance with the difference between the output of the tachometer generator T (strip speed) and the motor B.E.M.F. obtained from a potentiometer R1, R2 plus 1R drop compensation. Voltage limiting.-A magnetic amplifier A4 having a unidirectional output is connected in series with the amplifier A2 and is normally inoperative unless the motor B.E.M.F. exceed the voltage from generator T, when it provides an output to a control winding on the amplifier A to limit the generator excitation. Specification 738,662 is referred to.
GB1936153A 1953-07-13 1953-07-13 Improvements relating to electric motor control systems Expired GB738705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1936153A GB738705A (en) 1953-07-13 1953-07-13 Improvements relating to electric motor control systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1936153A GB738705A (en) 1953-07-13 1953-07-13 Improvements relating to electric motor control systems
ES0215849A ES215849A1 (en) 1953-07-13 1954-06-09 Improvements relating to electric motor control systems

Publications (1)

Publication Number Publication Date
GB738705A true GB738705A (en) 1955-10-19

Family

ID=10128066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1936153A Expired GB738705A (en) 1953-07-13 1953-07-13 Improvements relating to electric motor control systems

Country Status (2)

Country Link
ES (1) ES215849A1 (en)
GB (1) GB738705A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120561B (en) * 1956-06-27 1961-12-28 Pintsch Bamag Ag Automatic control arrangement for winding drives of sizing machines
DE1269711B (en) * 1962-07-18 1968-06-06 Continental Elektro Ind Ag Winder drive for large bundle diameter ratio

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120561B (en) * 1956-06-27 1961-12-28 Pintsch Bamag Ag Automatic control arrangement for winding drives of sizing machines
DE1269711B (en) * 1962-07-18 1968-06-06 Continental Elektro Ind Ag Winder drive for large bundle diameter ratio

Also Published As

Publication number Publication date
ES215849A1 (en) 1954-08-16

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