GB707640A - Improvements in or relating to frequency converting systems - Google Patents

Improvements in or relating to frequency converting systems

Info

Publication number
GB707640A
GB707640A GB11829/50A GB1182950A GB707640A GB 707640 A GB707640 A GB 707640A GB 11829/50 A GB11829/50 A GB 11829/50A GB 1182950 A GB1182950 A GB 1182950A GB 707640 A GB707640 A GB 707640A
Authority
GB
United Kingdom
Prior art keywords
line
machine
vary
voltage
frequency
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
GB11829/50A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB707640A publication Critical patent/GB707640A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02M5/40—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 with intermediate conversion into dc
    • H02M5/42—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 with intermediate conversion into dc by static converters
    • H02M5/44—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/447—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only

Abstract

707,640. Control of A.C. motors. SIEMENSSCHUCKERTWERKE AKT.-GES. May 11, 1950 [May 11, 1949], No. 11829/50. Class 38(3) [Also in Group XXXV] A system for changing the frequency, and if desired the number of phases, of the supply to a line R2, S2, T2 from a line R1, S1, T1 comprises a rectifier 2 and an inverter 3 serially connected through their D.C. circuits between the two lines, a synchronous machine 4 whose A.C. windings are supplied from the line R2, S2, T2 through a regulatable transformer 5, and control means 6 for rendering the inverter 3 operative in synchronism with the voltage of line R2, S2, T2, the machine 4 being driven during part of each half-cycle of the latter voltage and generating during other periods thereof. By altering the ratio of transformer 5 the machine 4, when generating, is said to vary the amplitude of the voltage of line R2, S2, T2 which causes the control means 6 to vary the instant of invertor ignition; this corresponds to an instantaneous phase change in line R2, S2, T2 which causes in turn the speed of machine 4 to vary until a new equilibrium is attained at an output frequency f2 different from that previously obtaining. A separate line R3, S3, T3 may be supplied by a generator 7 driven by the machine 4. The rectifier and invertor are Graetz connected and the D.C. circuits include a choke 8. The invention may be employed for the common speed regulation of a number of electric motors, e.g. in the travelling grate drives of boiler installations, or for frequency changing in railway traction supply systems.
GB11829/50A 1949-05-11 1950-05-11 Improvements in or relating to frequency converting systems Expired GB707640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE283538X 1949-05-11

Publications (1)

Publication Number Publication Date
GB707640A true GB707640A (en) 1954-04-21

Family

ID=6046873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11829/50A Expired GB707640A (en) 1949-05-11 1950-05-11 Improvements in or relating to frequency converting systems

Country Status (5)

Country Link
BE (1) BE495663A (en)
CH (1) CH283538A (en)
DE (1) DE966722C (en)
FR (1) FR1017419A (en)
GB (1) GB707640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109976A (en) * 1958-08-08 1963-11-05 Siemens Ag Phase and frequency converter device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244942B (en) * 1961-03-14 1967-07-20 Asea Ab Converter station for the asynchronous interconnection of two AC networks

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE614864C (en) * 1935-06-20 Aeg Arrangement for parallel operation between AC machines and inverters
US1222440A (en) * 1915-03-24 1917-04-10 Westinghouse Electric & Mfg Co Frequency-changing system.
AT140779B (en) * 1930-03-26 1935-02-25 Aeg Arrangement for the mutual exchange of power between alternating current networks of any frequency, phase and voltage via a direct current transmission line.
DE627784C (en) * 1931-05-24 1936-03-23 Aeg Arrangement for the operation of single-phase inverters
DE677346C (en) * 1932-04-29 1939-06-26 Siemens Schuckertwerke Akt Ges Arrangement for operating line-commutated inverters
DE638428C (en) * 1932-07-03 1936-11-14 Aeg Arrangement for supplying energy from one alternating current network to another by means of rectifiers and inverters with a direct current intermediate circuit
DE642628C (en) * 1932-07-09 1937-03-11 Aeg Arrangement for starting a synchronous machine working in parallel with an inverter on a consumer network, which has a second armature winding to which the active power to be emitted as a generator is fed by a second inverter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109976A (en) * 1958-08-08 1963-11-05 Siemens Ag Phase and frequency converter device

Also Published As

Publication number Publication date
CH283538A (en) 1952-06-15
DE966722C (en) 1957-08-22
BE495663A (en)
FR1017419A (en) 1952-12-10

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