GB515103A - Improvements in or relating to electric drives and control systems for rolling mills - Google Patents

Improvements in or relating to electric drives and control systems for rolling mills

Info

Publication number
GB515103A
GB515103A GB1533938A GB1533938A GB515103A GB 515103 A GB515103 A GB 515103A GB 1533938 A GB1533938 A GB 1533938A GB 1533938 A GB1533938 A GB 1533938A GB 515103 A GB515103 A GB 515103A
Authority
GB
United Kingdom
Prior art keywords
motor
generator
machine
booster
acting
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
GB1533938A
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.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
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
Priority to US515103XA priority Critical
Application filed by Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Publication of GB515103A publication Critical patent/GB515103A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/68Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more dc dynamo-electric motors
    • H02P5/69Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more dc dynamo-electric motors mechanically coupled by gearing

Abstract

515,103. Automatic control systems. WESTINGHOUSE ELECTRIC & MANUFACTURING CO. May 23, 1938, No. 15339. Convention date, May 22, 1937. [Class 38 (iv)] [Also in Group XXXVII] Strip tension.-The main motor 3 of a rolling mill, and the reel motors 6, 7 are supplied from a Ward-Leonard generator 8, and a booster generator 12 is connected in series with the motor 6, while a second booster 13 is connected in series with the motor 7. The machines 6 and 7 operate alternately as a motor and generator in accordance with the direction of operation of the motor 3 in order to effect tensioning of the strip. The boosters are controlled in dependence on the voltage applied to the motor 3 by means of field windings 21, 22 supplied from the generator 8, and are arranged so that the voltage across the machine 6, 7 acting as a motor is increased, while that across the machine acting as a generator is reduced. The current through each machine 6. 7 is regulated to constancy by means of a vibratory regulator 15, 16 respectively, operating on a resistance 39, 22 in the machine field, in order to maintain the strip tension constant. In a modification of this, switching means are provided whereby one booster is always associated with the machine 6, 7 acting as a motor 'and the other booster is always associated with the machine acting as a generator. Specification 449,877 is referred to.
GB1533938A 1937-05-22 1938-05-23 Improvements in or relating to electric drives and control systems for rolling mills Expired GB515103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US515103XA true 1937-05-22 1937-05-22

Publications (1)

Publication Number Publication Date
GB515103A true GB515103A (en) 1939-11-27

Family

ID=21971742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1533938A Expired GB515103A (en) 1937-05-22 1938-05-23 Improvements in or relating to electric drives and control systems for rolling mills

Country Status (1)

Country Link
GB (1) GB515103A (en)

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