GB1182950A - Improvements relating to the Modified Kramer Control of a Wound Rotor Induction Motor. - Google Patents

Improvements relating to the Modified Kramer Control of a Wound Rotor Induction Motor.

Info

Publication number
GB1182950A
GB1182950A GB49488/67A GB4948867A GB1182950A GB 1182950 A GB1182950 A GB 1182950A GB 49488/67 A GB49488/67 A GB 49488/67A GB 4948867 A GB4948867 A GB 4948867A GB 1182950 A GB1182950 A GB 1182950A
Authority
GB
United Kingdom
Prior art keywords
rectifiers
series
switching means
windings
induction 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
GB49488/67A
Inventor
John Christopher Shuldham Shaw
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB49488/67A priority Critical patent/GB1182950A/en
Publication of GB1182950A publication Critical patent/GB1182950A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/12—Asynchronous induction motors for multi-phase current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/42—Asynchronous induction generators
    • 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
    • H02P25/18—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 with arrangements for switching the windings, e.g. with mechanical switches or relays

Abstract

1,182,950. Control of A.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 24 Oct., 1968 [31 Oct., 1967], No. 49488/67. Heading H2J. The primary winding 2 of a wound rotor induction motor is connected directly to an A.C. supply 3 while the secondary, which comprises a plurality of polyphase windings 4 . . . 7, is connected through rectifiers 8 . . . 11 and switching means to an inverter 16 by which slip energy is fed back to the supply. As shown, the switching means (switches or thyristors) provides for series/parallel connection of the secondary windings and rectifiers. 8, 9 and 10, 11 are permanently in series; with switch 23 open these pairs are in parallel with each other through diodes 18, 20 but with 23 closed all the rectifiers are in series. The overall impedance of the secondary circuit may be varied by a resistor 21 shunted by switching means 22. In an alternative arrangement (Fig. 2, not shown), the windings and rectifiers are permanently in series but the number in use is varied in three stages by the switching means. The secondary windings and rectifiers are shown on the rotor, connected to slip rings 12. . . 15 but they could be on the stator with the primary 2 on the rotor, and the static inverter shown may be replaced by a motor-generator set
GB49488/67A 1967-10-31 1967-10-31 Improvements relating to the Modified Kramer Control of a Wound Rotor Induction Motor. Expired GB1182950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB49488/67A GB1182950A (en) 1967-10-31 1967-10-31 Improvements relating to the Modified Kramer Control of a Wound Rotor Induction Motor.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49488/67A GB1182950A (en) 1967-10-31 1967-10-31 Improvements relating to the Modified Kramer Control of a Wound Rotor Induction Motor.

Publications (1)

Publication Number Publication Date
GB1182950A true GB1182950A (en) 1970-03-04

Family

ID=10452527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49488/67A Expired GB1182950A (en) 1967-10-31 1967-10-31 Improvements relating to the Modified Kramer Control of a Wound Rotor Induction Motor.

Country Status (1)

Country Link
GB (1) GB1182950A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3344808A1 (en) * 1983-12-12 1985-06-13 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau METHOD FOR STARTING UP A SUB-SYNCHRONOUS RECTIFIER CASCADE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3344808A1 (en) * 1983-12-12 1985-06-13 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau METHOD FOR STARTING UP A SUB-SYNCHRONOUS RECTIFIER CASCADE

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees