DE569696C - Procedure for starting three-phase induction machines - Google Patents
Procedure for starting three-phase induction machinesInfo
- Publication number
- DE569696C DE569696C DES101540D DES0101540D DE569696C DE 569696 C DE569696 C DE 569696C DE S101540 D DES101540 D DE S101540D DE S0101540 D DES0101540 D DE S0101540D DE 569696 C DE569696 C DE 569696C
- Authority
- DE
- Germany
- Prior art keywords
- capacitors
- starting
- circuit
- motor
- switched
- 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
Links
- 230000006698 induction Effects 0.000 title claims description 3
- 238000000034 method Methods 0.000 title claims 4
- 239000003990 capacitor Substances 0.000 claims description 23
- 238000004804 winding Methods 0.000 claims description 5
- 241000555745 Sciuridae Species 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
- Induction Machinery (AREA)
Description
DEUTSCHES REICHGERMAN EMPIRE
AUSGEGEBEN AM 6. FEBRUAR 1933ISSUED ON FEBRUARY 6, 1933
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
JVl 569696 KLASSE 21 d2 GRUPPE 23 oi JVl 569696 CLASS 21 d 2 GROUP 23 oi
Patentiert im Deutschen Reiche vom 24. Oktober 1931 abPatented in the German Empire on October 24, 1931
Um den Leistungsfaktor und die Belastbarkeit von asynchronen Drehstrommotoren zu erhöhen, ist bereits vorgeschlagen worden, mit der Primärwicklung oder Sekundärwicklung der Maschine Kondensatoren in Reihe zu schalten. Durch derartige Kondensatoren werden die Betriebseigenschaften der Motoren außerordentlich verbessert. Aber so vorteilhaft derartige Motoren mit vorgeschalteten Kondensatoren auch während des Betriebes sind, so wenig vorteilhaft ist die Verwendung der Kondensatoren beim Anlassen. Ist der Anlaßstrom bereits bei gewöhnlichen Asynchronmotoren, insbesondere wenn diese grob geschaltet werden, außerordentlich groß, so wird durch das Vorschalten der Kondensatoren der Anlaßspitzenstrom noch in außerordentlicher Weise erhöht. Hierdurch können unter Umständen an den Schaltapparaten oder in dem Motor Schäden hervorgerufen werden. Vor allem aber wirkt der hohe Einschaltstromstoß störend auf andere Stromverbraucher, beispielsweise Beleuchtungsanlagen, ein.About the power factor and the load capacity of asynchronous three-phase motors to increase has already been proposed with the primary winding or secondary winding of the machine to connect capacitors in series. Such capacitors reduce the operating characteristics of the motors greatly improved. But so advantageous such motors with upstream Capacitors are also in operation, so their use is not very advantageous of the capacitors when starting. If the starting current is already used in normal asynchronous motors, especially if these are switched roughly, extremely large, then by connecting the capacitors the starting peak current is increased in an extraordinary way. Under certain circumstances, this can cause the switchgear or cause damage to the engine. Above all, however, the high inrush current has an effect interferes with other electricity consumers, for example lighting systems.
Durch die vorliegende Erfindung sollen die durch die eingeschalteten Kondensatoren hervorgerufenen Störungen beim Anlassen vermieden werden. Erfindungsgemäß wird dies dadurch erzielt, daß während des Anlassens die Kondensatoren unwirksam gemacht werden. The present invention is intended to reduce the effects caused by the capacitors being switched on Disturbances when starting can be avoided. According to the invention this is achieved in that during the tempering the capacitors are rendered ineffective.
Dies kann in einfacher Weise dadurch geschehen, daß Kondensatoren, die unmittelbar in den Motorstromkreis eingeschaltet sind, durch einen Schalter kurzgeschlossen werden. Sind die Kondensatoren in den Sternpunkt eingeschaltet, so wird der Kurzschlußschalter besonders einfach, da er in diesem Falle nur zweipolig ausgebildet zu werden braucht. Sind die Kondensatoren über einen Transformator mit den Motorstromkreisen verkettet, so wird ein Unterbrechungsschalter in den Sekundärkreis des Transformators, in welchem die Kondensatoren liegen, eingeschaltet. Diese Anordnung ist besonders vorteilhaft, weil in diesem Fall die Primärwicklung des Transformators wie eine gewöhnliche Drosselspule wirkt, wodurch der Einschaltstromstoß des Motors noch weiter herabgesetzt wird.This can be done in a simple manner that capacitors that directly are switched on in the motor circuit, short-circuited by a switch. If the capacitors are switched on in the star point, the short-circuit switch is activated particularly simple, since in this case it only needs to be designed with two poles. If the capacitors are linked to the motor circuits via a transformer, so becomes a circuit breaker in the secondary circuit of the transformer, in which the capacitors are switched on. This arrangement is particularly advantageous because in this case the primary winding of the transformer like an ordinary choke coil acts, which further reduces the inrush current of the motor.
In der Figur ist zur Veranschaulichung die Schaltung eines Drehstrominduktionsmotors dargestellt, in dessen Primärkreis Kondensatoren eingeschaltet sind. 1 bedeutet das Drehstromnetz, 2 die im Ständer des Motors liegende Primärwicklung. Mit 3 ist der Kurzschlußläufer des Motors bezeichnet. Mit dem Primärkreis sind über den Transformator 4 die Kondensatoren 5 gekoppelt. In dem Sekundärkreis des Transformators, in dem die Kondensatoren S liegen, liegt ein Unterbrechungsschalter 7. Dieser Unterbrechungs-The figure shows the circuit of a three-phase induction motor for illustration shown, in whose primary circuit capacitors are switched on. 1 means that Three-phase network, 2 the primary winding in the stator of the motor. With 3 is the Short-circuit rotor of the motor called. With the primary circuit are via the transformer 4 the capacitors 5 coupled. In the secondary circuit of the transformer in which the capacitors S are, there is an interrupt switch 7. This interruption
'*) Von dem P at ent sucher ist als der Erfinder angegeben worden:'*) The following has been stated as the inventor of the patent seeker:
Dipl.-lug. Jaroslav Kosisek in Berlin-Charlottenburg.Dipl.-lug. Jaroslav Kosisek in Berlin-Charlottenburg.
schalter 7 kann, wenn die Motoren grob auf das Netz geschaltet werden, mechanisch mit dem Ständerschalter 8 so gekuppelt werden, daß der Ständer stets vor dem Einschalten der Kondensatoren Spannung erhält.If the motors are roughly switched to the mains, switch 7 can also be used mechanically the stand switch 8 are coupled so that the stand always before switching on the capacitors receives voltage.
Der zuletzt erwähnte Gedanke, das Ausbzw. Einschalten der Kondensatoren unmittelbar von dem Ständerschalter abhängig zu machen, kann natürlich auch dann Anwendung finden, wenn die Kondensatoren unmittelbar in den Ständerkreis eingefügt sind.The last mentioned idea, the Auszw. The capacitors are switched on immediately To make it dependent on the stand switch can of course also apply find when the capacitors are inserted directly into the stator circuit.
Die Erfindung ist auch anwendbar bei Kommutatormaschinen, z. B. Drehstromnebenschlußmotoren. The invention is also applicable to commutator machines, e.g. B. three-phase shunt motors.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES101540D DE569696C (en) | 1931-10-24 | 1931-10-24 | Procedure for starting three-phase induction machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES101540D DE569696C (en) | 1931-10-24 | 1931-10-24 | Procedure for starting three-phase induction machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE569696C true DE569696C (en) | 1933-02-06 |
Family
ID=7523827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES101540D Expired DE569696C (en) | 1931-10-24 | 1931-10-24 | Procedure for starting three-phase induction machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE569696C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE975496C (en) * | 1952-03-06 | 1961-12-14 | Siemens Ag | Device for reducing the line voltage drop when starting squirrel cage motors |
-
1931
- 1931-10-24 DE DES101540D patent/DE569696C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE975496C (en) * | 1952-03-06 | 1961-12-14 | Siemens Ag | Device for reducing the line voltage drop when starting squirrel cage motors |
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