GB402498A - Improvements in and relating to electric motor control systems - Google Patents

Improvements in and relating to electric motor control systems

Info

Publication number
GB402498A
GB402498A GB1721432A GB1721432A GB402498A GB 402498 A GB402498 A GB 402498A GB 1721432 A GB1721432 A GB 1721432A GB 1721432 A GB1721432 A GB 1721432A GB 402498 A GB402498 A GB 402498A
Authority
GB
United Kingdom
Prior art keywords
winding
commutator
machine
current
main motor
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
GB1721432A
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 GB1721432A priority Critical patent/GB402498A/en
Publication of GB402498A publication Critical patent/GB402498A/en
Expired 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/24—Variable impedance in stator or rotor circuit
    • H02P25/26—Variable impedance in stator or rotor circuit with arrangements for controlling secondary impedance
    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/08—Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency
    • 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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/06—Rotor flux based control involving the use of rotor position or rotor speed sensors
    • H02P21/08—Indirect field-oriented control; Rotor flux feed-forward control
    • H02P21/09—Field phase angle calculation based on rotor voltage equation by adding slip frequency and speed proportional frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)

Abstract

402,498. Alternating-current inducttion motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and ADKINS, B., 13, Fisher Avenue, Paddox, Rugby. June 17, 1932, No. 17214. [Class 35.] In a speed-controlling system for an induction motor the secondary circuit of which is connected to an alternating-current commutator machine excited wholly or in part from a frequency changer coupled to the induction motor, the main motor and exciter are combined in one machine. The primary winding of the main motor is on the rotor and the secondary stator winding 5 is connected to the commutator of the cascade machine through a compensating winding 10. The star point of the stator winding 5 is connected to a starting resistance 6. The rotor of the main motor has a winding connected to a commutator 8 and the exciting winding 11 of the cascade machine is connected between this commutator and the terminals of the cascade machine through an autotransformer 12. Speed control is effected by changing the taps on the autotransformer. In a modification, the commutator 8 has two sets of brushes between which the winding 11 is connected and speed control is obtained by adjusting these brushes. A resistance is placed in this circuit to maintain the phase angle between current and voltage. Specifications 25358/11 and 140,476, [both in Class 35, Dynamo-electric generators &c.], are referred to.
GB1721432A 1932-06-17 1932-06-17 Improvements in and relating to electric motor control systems Expired GB402498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1721432A GB402498A (en) 1932-06-17 1932-06-17 Improvements in and relating to electric motor control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1721432A GB402498A (en) 1932-06-17 1932-06-17 Improvements in and relating to electric motor control systems

Publications (1)

Publication Number Publication Date
GB402498A true GB402498A (en) 1933-12-07

Family

ID=10091222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1721432A Expired GB402498A (en) 1932-06-17 1932-06-17 Improvements in and relating to electric motor control systems

Country Status (1)

Country Link
GB (1) GB402498A (en)

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