GB1509452A - Electrical installation comprising frequency changers - Google Patents

Electrical installation comprising frequency changers

Info

Publication number
GB1509452A
GB1509452A GB50187/77A GB5018777A GB1509452A GB 1509452 A GB1509452 A GB 1509452A GB 50187/77 A GB50187/77 A GB 50187/77A GB 5018777 A GB5018777 A GB 5018777A GB 1509452 A GB1509452 A GB 1509452A
Authority
GB
United Kingdom
Prior art keywords
march
trapezoidal
voltages
phase
limiters
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
GB50187/77A
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 AG
Original Assignee
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
Priority claimed from DE2415398A external-priority patent/DE2415398C3/en
Priority claimed from DE19752502513 external-priority patent/DE2502513A1/en
Priority claimed from DE2509177A external-priority patent/DE2509177C3/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1509452A publication Critical patent/GB1509452A/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
    • H02M5/02—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
    • H02M5/27—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 for conversion of frequency
    • H02M5/271—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 for conversion of frequency from a three phase input voltage
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output

Abstract

1509452 Frequency changing SIEMENS AG 17 March 1975 [29 March 1974 22 Jan 1975 3 March 1975] 50187/77 Divided out of 1509451 Heading H2F Each of a combination of an odd number m of frequency changers or inverters, connected in an m-phase star, is controlled by a trapezoidal voltage waveform obtained by three alternative methods. In Fig. 1 (not shown) the trapezoidal voltages are derived by adding third (and possibly ninth) harmonics to three-phase sinusoidal voltages. In Fig. 2 (not shown) automatic gain controlled limiters are used. Figs. 3 and 5 (not shown) relate to arrangements of limiters, multipliers and a square rooter for producing the three-phase trapezoidal voltages.
GB50187/77A 1974-03-29 1975-03-17 Electrical installation comprising frequency changers Expired GB1509452A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2415398A DE2415398C3 (en) 1974-03-29 1974-03-29 Circuit arrangement with a number of converters, in particular direct converters in star connection
DE19752502513 DE2502513A1 (en) 1975-01-22 1975-01-22 CIRCUIT ARRANGEMENT WITH A NUMBER OF INVERTERS, IN PARTICULAR DIRECT CONVERTERS IN STAR CONNECTION
DE2509177A DE2509177C3 (en) 1975-03-03 1975-03-03 Circuit arrangement with three converters with single-phase AC voltage output

Publications (1)

Publication Number Publication Date
GB1509452A true GB1509452A (en) 1978-05-04

Family

ID=27185863

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11091/75A Expired GB1509451A (en) 1974-03-29 1975-03-17 Electrical installation comprising frequency changers
GB50187/77A Expired GB1509452A (en) 1974-03-29 1975-03-17 Electrical installation comprising frequency changers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB11091/75A Expired GB1509451A (en) 1974-03-29 1975-03-17 Electrical installation comprising frequency changers

Country Status (6)

Country Link
JP (1) JPS5758865B2 (en)
FR (1) FR2275058A1 (en)
GB (2) GB1509451A (en)
IT (1) IT1034687B (en)
NL (1) NL7503076A (en)
SE (1) SE400431B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2330254A (en) * 1997-10-09 1999-04-14 Toshiba Kk Inverter system
RU2691635C2 (en) * 2018-10-29 2019-06-17 Евгений Николаевич Коптяев Double-channel frequency conversion method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523965Y2 (en) * 1976-04-30 1980-06-07
DE3029320A1 (en) * 1980-08-01 1982-03-04 Siemens AG, 1000 Berlin und 8000 München INVERTER WITH MULTI-PHASE OUTPUT AND EACH OWN CURRENT CONTROLLER FOR EACH OUTPUT
US4993986A (en) * 1989-11-01 1991-02-19 Bloomfield Steven L Fuzz blower power tube
ATE416508T1 (en) * 2005-10-24 2008-12-15 Conergy Ag INVERTER
EA015042B1 (en) * 2010-04-07 2011-04-29 Открытое Акционерное Общество "Нпо "Русский Электропривод" System for feeding and control of polyphase ac converter-fed motor
RU2581594C2 (en) * 2014-10-06 2016-04-20 Евгений Николаевич Коптяев Improved frequency down-converter
RU2639048C2 (en) * 2015-03-30 2017-12-19 Евгений Николаевич Коптяев Method of frequency conversion
CN114024468A (en) * 2021-10-12 2022-02-08 新疆蓝山屯河能源有限公司 Motor load sharing control device and control method for annular feeder of calcium carbide furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2330254A (en) * 1997-10-09 1999-04-14 Toshiba Kk Inverter system
GB2330254B (en) * 1997-10-09 2000-10-18 Toshiba Kk Multiple inverter system
RU2691635C2 (en) * 2018-10-29 2019-06-17 Евгений Николаевич Коптяев Double-channel frequency conversion method

Also Published As

Publication number Publication date
JPS50140823A (en) 1975-11-12
FR2275058A1 (en) 1976-01-09
NL7503076A (en) 1975-10-01
FR2275058B1 (en) 1981-12-18
JPS5758865B2 (en) 1982-12-11
IT1034687B (en) 1979-10-10
SE400431B (en) 1978-03-20
GB1509451A (en) 1978-05-04
SE7503441L (en) 1975-09-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee