GB607252A - Improvements connected with switching arrangements for the field control of d.c. electric motors - Google Patents

Improvements connected with switching arrangements for the field control of d.c. electric motors

Info

Publication number
GB607252A
GB607252A GB289346A GB289346A GB607252A GB 607252 A GB607252 A GB 607252A GB 289346 A GB289346 A GB 289346A GB 289346 A GB289346 A GB 289346A GB 607252 A GB607252 A GB 607252A
Authority
GB
United Kingdom
Prior art keywords
field
resistor
resistance
switch
full
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
GB289346A
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.)
HAROLD DAKIN WHEELER
Original Assignee
HAROLD DAKIN WHEELER
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 HAROLD DAKIN WHEELER filed Critical HAROLD DAKIN WHEELER
Priority to GB289346A priority Critical patent/GB607252A/en
Publication of GB607252A publication Critical patent/GB607252A/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
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/298—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature and field supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

607,252. Control of D.C. motors. WHEELER, H. D., and MOSSAY, P. A. H. Jan. 29, 1946, No. 2893. [Class 38 (iii)] Varying field.-The speed of a shunt-wound or lightly-compounded direct-current motor is controlled by varying its shunt field excitation and means are provided to afford an intermediate stage of medium excitation when changing from full to weak field and vice versa. Full field obtains when a switch SW4 is closed, a relay 1 being energized to short-circuit both a resistor R in series with the field winding SH, and the coil of a time-delay relay 2, thereby open-circuiting a diverter resistance D. When the switch SW4 is opened the relay 1 is deenergized to place the resistor R in series with the winding SH, the connection of the resistor D across the field winding being delayed. Similarly, when the switch SW4 is re-closed, the resistor R is first short-circuited and later the diverter resistance is removed. In a modification, a resistance is connected in parallel with the series resistor R before the diverting resistance is removed when changing from weak to full shunt field.
GB289346A 1946-01-29 1946-01-29 Improvements connected with switching arrangements for the field control of d.c. electric motors Expired GB607252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB289346A GB607252A (en) 1946-01-29 1946-01-29 Improvements connected with switching arrangements for the field control of d.c. electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB289346A GB607252A (en) 1946-01-29 1946-01-29 Improvements connected with switching arrangements for the field control of d.c. electric motors

Publications (1)

Publication Number Publication Date
GB607252A true GB607252A (en) 1948-08-27

Family

ID=9747993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB289346A Expired GB607252A (en) 1946-01-29 1946-01-29 Improvements connected with switching arrangements for the field control of d.c. electric motors

Country Status (1)

Country Link
GB (1) GB607252A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650514A (en) * 1950-06-01 1953-09-01 Robotti Joseph Reed organ wind supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650514A (en) * 1950-06-01 1953-09-01 Robotti Joseph Reed organ wind supply

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