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GB1241334A - Forced commutation high-power inverter with electronic short-circuit protection - Google Patents

Forced commutation high-power inverter with electronic short-circuit protection

Info

Publication number
GB1241334A
GB1241334A GB4770868A GB4770868A GB1241334A GB 1241334 A GB1241334 A GB 1241334A GB 4770868 A GB4770868 A GB 4770868A GB 4770868 A GB4770868 A GB 4770868A GB 1241334 A GB1241334 A GB 1241334A
Authority
GB
United Kingdom
Prior art keywords
thyristors
current
inverter
short
circuit protection
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
GB4770868A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1241334A publication Critical patent/GB1241334A/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
    • H02M7/505—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
    • H02H7/1225—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters responsive to internal faults, e.g. shoot-through

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Protection Of Static Devices (AREA)

Abstract

1,241,334. Short-circuit protection of invertors; control of A.C. motors. LICENTIA PATENT-VERWALTUNGS G.m.b.H. 8 Oct., 1968 [30 Oct., 1967], No. 47708/68. Headings H2F, H2J and H2K. By-pass thyristors T 1 , T 2 (Fig. 1) are provided to prevent damage, under fault conditions, to thyristors 1 to 6 of an inverter supplying a 3 phase load M. Assuming a fault wherein thyristors 1 and 4 are undesirably caused to conduct concurrently, a short-circuit current will flow from the D.C. input to the inverter, through a low resistance path including the thyristors 1, 4 and an interconnecting inductor L; also current will flow from smoothing capacitors C through this path. Thyristors T 1 in series with a resistor r is therefore switched on by a control circuit S t , to shunt the D.C. input and divert current from the inverter thyristors 1 and 4; then after an interval T 2 is turned on and provides a current path directly across the D.C. input. The discharge current of the capacitors, when 1 and 4 conduct, may be used to initiate the firing of T 1 , being sensed by current transformers connected to the control circuit. If the load M is a motor, then a reverse excess current may flow therefrom through reverse current diodes of the inverter and could damage the same. This is prevented by switching on thyristors 7 to 10 across the motor terminals. Due to the by-pass valve form of D.C. short-circuit protection, the current rating of the inverter thyristors may be increased if forced cooling is used. Each thyristor 1 to 6 may be replaced by four thyristors and a commutating capacitor as shown Fig. 2, two diagonally opposite thyristors only conducting at a time.
GB4770868A 1967-10-30 1968-10-08 Forced commutation high-power inverter with electronic short-circuit protection Expired GB1241334A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19671613842 DE1613842A1 (en) 1967-10-30 1967-10-30 Forced commutated high-performance inverter with electronic short-circuit protection
DEL0057766 1967-10-30

Publications (1)

Publication Number Publication Date
GB1241334A true GB1241334A (en) 1971-08-04

Family

ID=25753687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4770868A Expired GB1241334A (en) 1967-10-30 1968-10-08 Forced commutation high-power inverter with electronic short-circuit protection

Country Status (4)

Country Link
CH (1) CH493143A (en)
DE (1) DE1613842A1 (en)
FR (1) FR1589808A (en)
GB (1) GB1241334A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1544974A1 (en) * 2003-12-19 2005-06-22 ABB Oy Method and arrangement for protecting a frequency converter
US10263506B2 (en) 2015-03-05 2019-04-16 Ge Energy Power Conversion Technology Ltd Circuit arrangement and method for gate-controlled power semiconductor devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128638A1 (en) * 1981-07-20 1983-07-07 Loher Gmbh, 8399 Ruhstorf Circuit arrangement for protecting converter components against overvoltages

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1544974A1 (en) * 2003-12-19 2005-06-22 ABB Oy Method and arrangement for protecting a frequency converter
US7227325B1 (en) 2003-12-19 2007-06-05 Abb Oy Method and arrangement for protecting a frequency converter
US10263506B2 (en) 2015-03-05 2019-04-16 Ge Energy Power Conversion Technology Ltd Circuit arrangement and method for gate-controlled power semiconductor devices

Also Published As

Publication number Publication date
CH493143A (en) 1970-06-30
FR1589808A (en) 1970-04-06
DE1613842A1 (en) 1971-01-21

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