GB1220574A - Improvements in and relating to variable speed wound rotor dynamo-electric machines of the induction type - Google Patents

Improvements in and relating to variable speed wound rotor dynamo-electric machines of the induction type

Info

Publication number
GB1220574A
GB1220574A GB5538666A GB5538666A GB1220574A GB 1220574 A GB1220574 A GB 1220574A GB 5538666 A GB5538666 A GB 5538666A GB 5538666 A GB5538666 A GB 5538666A GB 1220574 A GB1220574 A GB 1220574A
Authority
GB
United Kingdom
Prior art keywords
pair
rotor
rectifiers
parallel
controlled
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
GB5538666A
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.)
KENNETH DAVID STEPHEN
Heriot Watt University
Original Assignee
KENNETH DAVID STEPHEN
Heriot Watt University
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 KENNETH DAVID STEPHEN, Heriot Watt University filed Critical KENNETH DAVID STEPHEN
Priority to GB5538666A priority Critical patent/GB1220574A/en
Publication of GB1220574A publication Critical patent/GB1220574A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • 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
    • H02P23/10—Controlling by adding a dc current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

1,220,574. Control of A.C. motors. K. D. STEPHEN. 8 March, 1968 [9 Dec., 1966], No. 55386/66. Heading H2J. The speed and power factor of a wound rotor induction motor is controlled by a pair of oppositely poled controllable rectifiers 1, 2 in parallel with the or each rotor winding 6, and at least one further controllable rectifier 3 connected as shown so as to supply power to the rotor, at a suitable leading phase angle, from an A.C. source Ej which may be the supply to the stator. The rectifier 3 is fired one or more times while the pair 1, 2 are non-conducting, which may be during the first or the middle portion of each slip frequency half cycle. In one alternative embodiment 3 is replaced by a parallel pair of oppositely poled controlled rectifiers, and in another by a controlled and an uncontrolled rectifier in parallel, also oppositely poled, there being one such pair on each side of the supply Ej. The rectifiers may be semiconductor or valve type and may be either mounted on the rotor or connected via slip rings.
GB5538666A 1966-12-09 1966-12-09 Improvements in and relating to variable speed wound rotor dynamo-electric machines of the induction type Expired GB1220574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5538666A GB1220574A (en) 1966-12-09 1966-12-09 Improvements in and relating to variable speed wound rotor dynamo-electric machines of the induction type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5538666A GB1220574A (en) 1966-12-09 1966-12-09 Improvements in and relating to variable speed wound rotor dynamo-electric machines of the induction type

Publications (1)

Publication Number Publication Date
GB1220574A true GB1220574A (en) 1971-01-27

Family

ID=10473751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5538666A Expired GB1220574A (en) 1966-12-09 1966-12-09 Improvements in and relating to variable speed wound rotor dynamo-electric machines of the induction type

Country Status (1)

Country Link
GB (1) GB1220574A (en)

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