CA1067125A - Power control system for single phase induction melting or heating furnace - Google Patents

Power control system for single phase induction melting or heating furnace

Info

Publication number
CA1067125A
CA1067125A CA251,866A CA251866A CA1067125A CA 1067125 A CA1067125 A CA 1067125A CA 251866 A CA251866 A CA 251866A CA 1067125 A CA1067125 A CA 1067125A
Authority
CA
Canada
Prior art keywords
furnace
capacitance
voltage
group
power control
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
CA251,866A
Other languages
English (en)
French (fr)
Inventor
George Havas
Original Assignee
Ajax Magnethermic Corp
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 Ajax Magnethermic Corp filed Critical Ajax Magnethermic Corp
Application granted granted Critical
Publication of CA1067125A publication Critical patent/CA1067125A/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
    • 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
    • H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC
    • H02M5/04—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
    • H02M5/22—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC 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
    • H02M5/253—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC 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 discharge tubes only

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Induction Heating (AREA)
  • Furnace Details (AREA)
  • Control Of Electrical Variables (AREA)
CA251,866A 1975-08-04 1976-05-05 Power control system for single phase induction melting or heating furnace Expired CA1067125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/601,644 US4037044A (en) 1975-08-04 1975-08-04 Power control system for single phase induction melting or heating furnace

Publications (1)

Publication Number Publication Date
CA1067125A true CA1067125A (en) 1979-11-27

Family

ID=24408240

Family Applications (1)

Application Number Title Priority Date Filing Date
CA251,866A Expired CA1067125A (en) 1975-08-04 1976-05-05 Power control system for single phase induction melting or heating furnace

Country Status (5)

Country Link
US (1) US4037044A (enExample)
JP (1) JPS5219339A (enExample)
CA (1) CA1067125A (enExample)
DE (1) DE2634667A1 (enExample)
GB (1) GB1555366A (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139723A (en) * 1977-04-21 1979-02-13 Ajax Magnethermic Corporation Power control unit for a single phase load with slightly changing impedances
US4417194A (en) * 1980-09-18 1983-11-22 The Charles Stark Draper Laboratory, Inc. Induction generator system with switched capacitor control
US4356440A (en) * 1980-09-18 1982-10-26 The Charles Stark Draper Laboratory, Inc. Power factor correction system
FR2495876B1 (fr) * 1980-12-05 1985-06-07 Scholtes Ets Eugen Dispositif electronique de chauffage a induction
JPS57129986A (en) * 1981-02-05 1982-08-12 Nippon Kokan Kk Heat insulating and supporting mechanism of pipings
US4516056A (en) * 1982-05-18 1985-05-07 General Electric Company Capacitively ballasted low voltage incandescent lamp
GB2121248B (en) * 1982-05-18 1986-03-05 Gen Electric Capacitive voltage dropper
US4447765A (en) * 1982-05-18 1984-05-08 General Electric Company Power supply for low voltage incandescent lamp
US4447764A (en) * 1982-05-18 1984-05-08 General Electric Company Power supply for low-voltage incandescent lamp and like load
US4612498A (en) * 1982-08-06 1986-09-16 Smalley Daniel S Induction furnace fault locator
US4525665A (en) * 1982-08-06 1985-06-25 Smalley Daniel S Induction furnace monitor
JP2602248B2 (ja) * 1987-10-23 1997-04-23 株式会社日立製作所 多管式極低温移送配管
US4811356A (en) * 1988-03-10 1989-03-07 Ajax Magnethermic Corporation Control circuit for switching power to an induction furnace
WO2002054831A2 (en) * 2001-01-08 2002-07-11 Inductotherm Corp. Induction furnace with improved efficiency coil system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500174A (en) * 1968-02-21 1970-03-10 Karl H Ellerbeck Soft start and soft stop of an a.c. voltage
CH508303A (de) * 1968-08-08 1971-05-31 Sevcon Eng Ltd Steuereinrichtung zur Steuerung eines einer Last mit veränderlichem Impulstastverhältnis impulsweise zugeführten Gleichstromes
FR2122022A5 (enExample) * 1971-01-15 1972-08-25 Ferodo Sa
US3821456A (en) * 1973-09-24 1974-06-28 Ajax Magnethermic Corp Power control means for a single phase induction melting or heating furnace

Also Published As

Publication number Publication date
GB1555366A (en) 1979-11-07
JPS5219339A (en) 1977-02-14
DE2634667A1 (de) 1977-02-17
JPS5523433B2 (enExample) 1980-06-23
US4037044A (en) 1977-07-19

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