GB650892A - Improvements in or relating to means for controlling the power-factor of induction heaters and similar appliances - Google Patents

Improvements in or relating to means for controlling the power-factor of induction heaters and similar appliances

Info

Publication number
GB650892A
GB650892A GB499748A GB499748A GB650892A GB 650892 A GB650892 A GB 650892A GB 499748 A GB499748 A GB 499748A GB 499748 A GB499748 A GB 499748A GB 650892 A GB650892 A GB 650892A
Authority
GB
United Kingdom
Prior art keywords
power factor
speed
alternator
factor
power
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
GB499748A
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.)
Birlec Ltd
Original Assignee
Birlec 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 Birlec Ltd filed Critical Birlec Ltd
Priority to GB499748A priority Critical patent/GB650892A/en
Publication of GB650892A publication Critical patent/GB650892A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/08—Control, e.g. of temperature, of power using compensating or balancing arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

650,892. Automatic control systems, power factor; supply systems for induction furnaces. BIRLEC, Ltd., and MAY, E. Feb. 20, 1948, No. 4997. [Class 38 (iv)] The power factor of a H.F. induction furnace, having a heating coil 1 supplied by an alternator is controlled by varying the speed of the alternator in accordance with variations of the power factor from unity so as to tend to maintain the power factor at unity. Deviations of the power factor are detected by a device 5 operating a servo device or relay 6 which controls the speed of a motor 4 driving the alternator 3. For further control, condensers in parallel with the heating coil may be automatically or manually cut into or out of circuit. In a further embodiment employing a constant speed motor (Fig. 2, not shown), variation of speed of the alternator may be effected by speed-change gear in the motor drive.
GB499748A 1948-02-20 1948-02-20 Improvements in or relating to means for controlling the power-factor of induction heaters and similar appliances Expired GB650892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB499748A GB650892A (en) 1948-02-20 1948-02-20 Improvements in or relating to means for controlling the power-factor of induction heaters and similar appliances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB499748A GB650892A (en) 1948-02-20 1948-02-20 Improvements in or relating to means for controlling the power-factor of induction heaters and similar appliances

Publications (1)

Publication Number Publication Date
GB650892A true GB650892A (en) 1951-03-07

Family

ID=9787773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB499748A Expired GB650892A (en) 1948-02-20 1948-02-20 Improvements in or relating to means for controlling the power-factor of induction heaters and similar appliances

Country Status (1)

Country Link
GB (1) GB650892A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417736A1 (en) * 1978-02-20 1979-09-14 Asea Ab CREUSET INDUCTION OVEN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417736A1 (en) * 1978-02-20 1979-09-14 Asea Ab CREUSET INDUCTION OVEN

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