GB531787A - Improvements in eddy current dynamometers - Google Patents

Improvements in eddy current dynamometers

Info

Publication number
GB531787A
GB531787A GB2236839A GB2236839A GB531787A GB 531787 A GB531787 A GB 531787A GB 2236839 A GB2236839 A GB 2236839A GB 2236839 A GB2236839 A GB 2236839A GB 531787 A GB531787 A GB 531787A
Authority
GB
United Kingdom
Prior art keywords
coil
magnetic system
magnetic
flux
variation
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
GB2236839A
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.)
ERIC GRAHAM ROSS
Heenan and Froude Ltd
Original Assignee
ERIC GRAHAM ROSS
Heenan and Froude 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 ERIC GRAHAM ROSS, Heenan and Froude Ltd filed Critical ERIC GRAHAM ROSS
Priority to GB2236839A priority Critical patent/GB531787A/en
Publication of GB531787A publication Critical patent/GB531787A/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
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/0016—Control of angular speed of one shaft without controlling the prime mover
    • H02P29/0027—Controlling a clutch between the prime mover and the load

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

531,787. Dynamometers. HEENAN & FROUDE, Ltd., and ROSS, E. G. Aug. 2, 1939, No. 22368. [Class 106 (ii)] A machine of the eddycurrent type employing a cylindrical rotor has arranged in its magnetic system a supplementary coil or coils excited from the variation of magnetic flux within the dynamometer. The magnetic system 1 of the machine is excited by a coil 2. The supplementary coil 3 is situated within the magnetic system and is preferably intimately wound with the coil 2. A coil 4 external to the magnetic system is in series with the coil 3 and intimately wound with a coil 5 in series with the field coil 2. The coils 4 and 5 form a mutually inductive system external tc the magnetic system of the dynamometer. Any change ir the magnetic system 1 will cause a variation of voltage in the coil 2 and a voltage is similarly generated in the coil 3 of the same sign of rate of change of variation. This causes changes in the coil 4 which induces changes in coil 5 of opposite sign and this opposes the change in the coil 2. Thus the variations in flux in the magnetic system 1 due to flux/speed conditions in the air-gap as the operational control is varied are automatically compensated for and instantaneous control of the speed and load of the machine made possible. The time effect of the coil system 4 and 5 may be fixed in some definite relationship to the systems 1, 2, 3 and this may be done by arranging a magnetic core to interlink the flux of coils 4 and 5 and this core in another form may be adjustable by means of a screw. Specification 524,080 is referred to.
GB2236839A 1939-08-02 1939-08-02 Improvements in eddy current dynamometers Expired GB531787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2236839A GB531787A (en) 1939-08-02 1939-08-02 Improvements in eddy current dynamometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2236839A GB531787A (en) 1939-08-02 1939-08-02 Improvements in eddy current dynamometers

Publications (1)

Publication Number Publication Date
GB531787A true GB531787A (en) 1941-01-10

Family

ID=10178239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2236839A Expired GB531787A (en) 1939-08-02 1939-08-02 Improvements in eddy current dynamometers

Country Status (1)

Country Link
GB (1) GB531787A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057192A (en) * 1959-09-21 1962-10-09 Union Oil Co Chassis dynamometer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057192A (en) * 1959-09-21 1962-10-09 Union Oil Co Chassis dynamometer

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