GB1387872A - Electric motor - Google Patents

Electric motor

Info

Publication number
GB1387872A
GB1387872A GB635372A GB635372A GB1387872A GB 1387872 A GB1387872 A GB 1387872A GB 635372 A GB635372 A GB 635372A GB 635372 A GB635372 A GB 635372A GB 1387872 A GB1387872 A GB 1387872A
Authority
GB
United Kingdom
Prior art keywords
resistor
source
rectifier
adjustable
thyristor
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
GB635372A
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.)
GJC DEV Ltd
Original Assignee
GJC DEV 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 GJC DEV Ltd filed Critical GJC DEV Ltd
Priority to GB635372A priority Critical patent/GB1387872A/en
Publication of GB1387872A publication Critical patent/GB1387872A/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
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/10—Commutator motors, e.g. repulsion motors
    • H02P25/14—Universal motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

1387872 Control of commutator motors GJC (DEVELOPMENT) Ltd 10 Feb 1972 6353/72 Heading H2J A series wound commutator motor 1 has its field winding arranged in two parts 2, 3, the former being shunted by an adjustable resistor 6 which provides speed control whilst the motor is energized from an A.C. source 4 via a rectifier 5, full speed being obtained by operation of ganged switches 10a-10d to connect the armature 1 and winding part 3 directly to the source 4. The resistor 6 may be replaced by a tapped resistor adjustable by a manual selector switch, Fig. 2 (not shown), or by a potentiometer, Fig. 3 (not shown) or by a thyristor whose firing angle is adjusted by a variable resistor in a control circuit connected across the source 4, Fig. 4 (not shown), the rectifier in this case being a single diode. The thyristor may be prevented from conducting during operation of the ganged switches to produce full speed. Winding part 2 has approximately twice as many turns as part 3.
GB635372A 1972-02-10 1972-02-10 Electric motor Expired GB1387872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB635372A GB1387872A (en) 1972-02-10 1972-02-10 Electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB635372A GB1387872A (en) 1972-02-10 1972-02-10 Electric motor

Publications (1)

Publication Number Publication Date
GB1387872A true GB1387872A (en) 1975-03-19

Family

ID=9812960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB635372A Expired GB1387872A (en) 1972-02-10 1972-02-10 Electric motor

Country Status (1)

Country Link
GB (1) GB1387872A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees