SE8007849L - VEXELRIKTARE - Google Patents

VEXELRIKTARE

Info

Publication number
SE8007849L
SE8007849L SE8007849A SE8007849A SE8007849L SE 8007849 L SE8007849 L SE 8007849L SE 8007849 A SE8007849 A SE 8007849A SE 8007849 A SE8007849 A SE 8007849A SE 8007849 L SE8007849 L SE 8007849L
Authority
SE
Sweden
Prior art keywords
load
windings
thyristors
groups
winding
Prior art date
Application number
SE8007849A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
F O Wisman
Original Assignee
Woods T B Sons Co
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 Woods T B Sons Co filed Critical Woods T B Sons Co
Publication of SE8007849L publication Critical patent/SE8007849L/en

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
    • H02M7/5157—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 wherein the extinguishing of every commutation element will be obtained by means of a commutation inductance, by starting another main commutation element in series with the first

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

A self-commutating inverter supplies controllable frequency power to a load. The load, which may be a simple induction motor or the like, has plural load windings (A, A', B, B', C, C') which may be arranged in two groups so that a load winding in one group has a complementary load winding in another. Thyristors (TA, TA', TB, TB', TC, TC') are associated with each of the complemented load windings and the thyristors of each group of load windings are capacitively coupled (C1 to C6). A DC potential is applied to the inverter by a pair of terminals. As different thyristors are enabled, current is commutated from one load winding to another. Excessive voltages induced by commutating the inductive loads are reduced by diodes (RA, RA' to RC, RC') coupled between a terminal and a divided load winding. For producing three phase power of controlled frequency, the load has six windings, forming two groups of three windings each. The thyristors associated with each group of windings conduct periodically in a sequence, with each thyristor conducting for one third (or 120 DEG ) of the period. While the conduction periods for each of the groups of load windings are equal, they are offset in time by one- sixth (or 60 DEG ) of the period. <IMAGE>
SE8007849A 1979-11-13 1980-11-07 VEXELRIKTARE SE8007849L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9355979A 1979-11-13 1979-11-13

Publications (1)

Publication Number Publication Date
SE8007849L true SE8007849L (en) 1981-05-14

Family

ID=22239606

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8007849A SE8007849L (en) 1979-11-13 1980-11-07 VEXELRIKTARE

Country Status (6)

Country Link
CA (1) CA1158717A (en)
DE (1) DE3042397A1 (en)
FR (1) FR2469818A1 (en)
GB (1) GB2062980B (en)
NL (1) NL8006222A (en)
SE (1) SE8007849L (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349315A (en) * 1965-02-11 1967-10-24 Borg Warner Static inverter system with current sharing by both commutating choke windings during commutating energy recovery
US3859587A (en) * 1974-01-07 1975-01-07 Lorain Prod Corp Thyristor protection circuit for inverters

Also Published As

Publication number Publication date
CA1158717A (en) 1983-12-13
GB2062980B (en) 1983-10-19
GB2062980A (en) 1981-05-28
FR2469818A1 (en) 1981-05-22
DE3042397A1 (en) 1981-05-21
NL8006222A (en) 1981-06-01

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