SE331131B - - Google Patents

Info

Publication number
SE331131B
SE331131B SE688168A SE688168A SE331131B SE 331131 B SE331131 B SE 331131B SE 688168 A SE688168 A SE 688168A SE 688168 A SE688168 A SE 688168A SE 331131 B SE331131 B SE 331131B
Authority
SE
Sweden
Prior art keywords
resistor
starting
current
winding
period
Prior art date
Application number
SE688168A
Inventor
S Forst
Original Assignee
Danfoss As
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 Danfoss As filed Critical Danfoss As
Publication of SE331131B publication Critical patent/SE331131B/xx

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

1,164,072. Control of A.C. motors. DANFOSS A.S. 20 May, 1968 [27 May, 1967], No. 23898/68. Heading H2J. A single-phase motor has main and starting windings 2, 3, and a PTC-resistor is connected in series with the starting winding. This resistor has a stable operating point on either side of the peak of its current-voltage curve, the resistor being at the low-value stable position when it is heated only by the starting current. A heating resistor 8 is connected across the supply lines, and delayed by its mass and by a thermal insulator 9, affects the resistor 7 only towards the end of a selected period. The resistor then changes over to its other stable operating point so that the starting current is reduced to a low value. The resistor 8 may be energized for the entire running period of the motor, or may be switched on only for a brief interval towards the end of the starting period. The resistor 8 may carry the main winding current, or it may be in parallel with the starting winding.
SE688168A 1967-05-27 1968-05-21 SE331131B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0053183 1967-05-27

Publications (1)

Publication Number Publication Date
SE331131B true SE331131B (en) 1970-12-14

Family

ID=7054764

Family Applications (1)

Application Number Title Priority Date Filing Date
SE688168A SE331131B (en) 1967-05-27 1968-05-21

Country Status (7)

Country Link
BE (1) BE715727A (en)
CH (1) CH471492A (en)
DE (1) DE1613609B1 (en)
ES (1) ES354330A1 (en)
FR (1) FR1566080A (en)
GB (1) GB1164072A (en)
SE (1) SE331131B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1493077A (en) * 1966-07-13 1967-08-25 Unelec Device for starting single-phase asynchronous motors

Also Published As

Publication number Publication date
CH471492A (en) 1969-04-15
DE1613609B1 (en) 1970-09-03
GB1164072A (en) 1969-09-10
ES354330A1 (en) 1969-11-01
FR1566080A (en) 1969-05-02
BE715727A (en) 1968-10-16

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