GB2000392A - Electrical frequency converter - Google Patents

Electrical frequency converter

Info

Publication number
GB2000392A
GB2000392A GB7827575A GB7827575A GB2000392A GB 2000392 A GB2000392 A GB 2000392A GB 7827575 A GB7827575 A GB 7827575A GB 7827575 A GB7827575 A GB 7827575A GB 2000392 A GB2000392 A GB 2000392A
Authority
GB
United Kingdom
Prior art keywords
thyristors
circuit
bridge
quenching
pulses
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.)
Granted
Application number
GB7827575A
Other versions
GB2000392B (en
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.)
Institutul de Cercetari Pentru Industria Electro Tehnica
Original Assignee
Institutul de Cercetari Pentru Industria Electro Tehnica
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 Institutul de Cercetari Pentru Industria Electro Tehnica filed Critical Institutul de Cercetari Pentru Industria Electro Tehnica
Publication of GB2000392A publication Critical patent/GB2000392A/en
Application granted granted Critical
Publication of GB2000392B publication Critical patent/GB2000392B/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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • 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
    • H02M5/45—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 semiconductor devices only
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/4811—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode having auxiliary actively switched resonant commutation circuits connected to intermediate DC voltage or between two push-pull branches
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/505—Conversion of dc power input into ac power output without possibility of reversal 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
    • H02M7/515—Conversion of dc power input into ac power output without possibility of reversal 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 semiconductor devices only
    • H02M7/5152—Conversion of dc power input into ac power output without possibility of reversal 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 semiconductor devices only with separate extinguishing means
    • H02M7/5155—Conversion of dc power input into ac power output without possibility of reversal 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 semiconductor devices only with separate extinguishing means wherein each commutation element has its own extinguishing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Protection Of Static Devices (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Control Of Electrical Variables (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

A rectifier feeds an inverter having main thyristors T1-T4 in a bridge circuit. Two trains of pulses gate bursts of oscillation from an oscillator to five pairs of thyristors in opposite arms of the bridge alternately. Each arm of the bridge is connected to a pair of anti-parallel connected quenching thyristors Ta connected to a quenching capacitor Cs. The quenching thyristors are turned on respectively by pulses derived by a differentiating circuit and a monostable circuit from the leading and trailing edges of the pulses which turn on the main thyristors in a pattern such that each main thyristor is quenched at the correct time. A protective circuit is provided to short out the d.c. voltage between the rectifier and the inverter when a short circuit is sensed (Figure 1 not shown). <IMAGE>
GB7827575A 1977-06-27 1978-06-22 Electrical frequency converter Expired GB2000392B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO7790828A RO66150A2 (en) 1977-06-27 1977-06-27 STATIC FREQUENCY CONVERTER WITH INTERMEDIATE CURRENT VOLTAGE CIRCUIT

Publications (2)

Publication Number Publication Date
GB2000392A true GB2000392A (en) 1979-01-04
GB2000392B GB2000392B (en) 1982-01-20

Family

ID=20097917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827575A Expired GB2000392B (en) 1977-06-27 1978-06-22 Electrical frequency converter

Country Status (10)

Country Link
BG (1) BG43359A3 (en)
CS (1) CS268501B2 (en)
DD (1) DD135019A5 (en)
EG (1) EG13245A (en)
ES (1) ES470953A1 (en)
GB (1) GB2000392B (en)
HU (1) HU182888B (en)
PL (1) PL122133B1 (en)
RO (1) RO66150A2 (en)
SU (1) SU1148573A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237531A (en) * 1979-04-24 1980-12-02 General Electric Company Controlled current inverter system having semiconductor overvoltage protection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
SU1148573A3 (en) 1985-03-30
EG13245A (en) 1984-06-30
RO66150B1 (en) 1983-01-30
RO66150A2 (en) 1983-02-01
HU182888B (en) 1984-03-28
DD135019A5 (en) 1979-04-04
BG43359A3 (en) 1988-05-16
PL207886A1 (en) 1979-03-26
PL122133B1 (en) 1982-06-30
GB2000392B (en) 1982-01-20
ES470953A1 (en) 1979-02-01
CS268501B2 (en) 1990-03-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee