DE692297C - Starting procedure for three-phase short-circuit rotor motors - Google Patents
Starting procedure for three-phase short-circuit rotor motorsInfo
- Publication number
- DE692297C DE692297C DE1937V0034132 DEV0034132D DE692297C DE 692297 C DE692297 C DE 692297C DE 1937V0034132 DE1937V0034132 DE 1937V0034132 DE V0034132 D DEV0034132 D DE V0034132D DE 692297 C DE692297 C DE 692297C
- Authority
- DE
- Germany
- Prior art keywords
- motor
- phase
- phase short
- starting procedure
- rotor motors
- 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
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)
Description
Anlaßverfahren für Drehst.vomkurzschlußläufermotoren Um bei Drehstrornkurzschlußläufermotoren ohne Umschaltung von Stern auf Dreieck einen sanften Anlauf zu erzielen, werden gemäß der Erfindung die in Dreieck ;geschalteten Phasenwicklungen des Motors beim Anlassen zuerst an den Nulleiter und zwei Phasen und dann an die drei Phasen des Netzes angeschlossen. Dieses Schaltverfahren hat gegenüber dem Umschalten von Stern auf Dreieck den Vorzug, daß ,der Motor stets in" der Dreieckschaltung angeschlossen ist und nicht auf Sternschaltung umgeschaltet werden muß. Man hat bereits vorgeschlagen, die Sternschaltung bei Kurzschlußmotoren wegzulassen und in der Anlaßstufe eine Wicklung des Schaltdreiecks des Motors äffen zu lassen, die in der zweiten Stufe geschlossen wird. Für dieses Umschalten ist das Herausführen eines weiteren Endes der Motorwicklung erforderlich, was durch die Erfindung in Wegfall kommt.Starting procedure for three-phase squirrel cage motors Um for three-phase squirrel cage motors to achieve a smooth start without switching from star to delta According to the invention, the phase windings of the motor connected in triangle Starting first on the neutral conductor and two phases and then on the three phases of the Connected to the network. This switching method has compared to switching from star on triangle has the advantage that the motor is always connected in "the delta connection and does not have to be switched to star connection. It has already been suggested to omit the star connection in short-circuit motors and one in the starting stage Winding the triangle of the motor ape that in the second stage is closed. For this toggling there is a further end to be brought out the motor winding required, which is eliminated by the invention.
lach der Erfindung liegt der Motor zunächst in Dreieckschaltung an dem Nulleiter und zwei Phasenleitern. Hierdurch liegen zwei Wicklungen an der Phasenspannung und eine an der verketteten Spannung. 1,#s @entst@ht hierdurch einelliptisches Drehfeld im Motor. Das Anzugsmoment ist also geringer als bei Anschluß sämtlicher Wicklungen an die verkettete Spannung, wo der Motor .ein symmetrisches Drehfeld besitzt.According to the invention, the motor is initially in delta connection the neutral conductor and two phase conductors. This means that there are two windings at the phase voltage and one at the chained voltage. 1, # s @ creates an elliptical rotating field in the engine. The tightening torque is therefore lower than when all windings are connected to the line-to-line voltage where the motor has a symmetrical rotating field.
Bei einer bekannten Bremsanordnung für D@rehstrommotoren liegt der Motor im Dauerbetrieb an den dreiNetzphas-en. Beim Gegenstrombremsen bzw. beim Anlassen liegt eine Wicklung an der Phasen- und eine an der verketteten Spannung. Die dritte Wicklung des Motors ist offen. Es muß hierbei ebenfalls ein weiteres Ende der Motorwicklung nach außen geführt werden.In a known brake arrangement for three-phase motors is the Motor in continuous operation on the three mains phases. When braking in the opposite direction or when starting One winding is connected to the phase voltage and one to the line voltage. The third Motor winding is open. There must also be another end of the motor winding be led to the outside.
Die Abbildung zeigt ein Schaltungsbeispiel gemäß der Erfindung. Die in Dreieck geschalteten Motorwicklungen a, b, c können über den Umschaltend an das Netz ORST angeschlossen werden. In der gezeichneten Stellung I liegen die Motorwicklungen an dem Nulleiter O und den Phasenleitern R und S. Wird der Umschalter xi auf die Stellung I I gebracht, so liegen die Wicklungen des Motors an den Phasenleitern RST. Durch die Erfindung wird es ermöglicht, bei jedem Kurzschlußläüfer, der keine Umschalteinrichtung von Stern auf Dreieck besitzt, einen sanften Anlauf zu erhalten. Der zur Verwendung kommende Umschalter kann als ferngesteuertes Schütz, als Walzenschalter, Hebelschalter o. dgl. ausgebildet sein.The figure shows an example circuit according to the invention. The delta-connected motor windings a, b, c can be connected to the ORST network via the switchover. In the position I shown, the motor windings are connected to the neutral conductor O and the phase conductors R and S. If the changeover switch xi is set to position II, the motor windings are connected to the phase conductors RST. The invention makes it possible to obtain a smooth start-up for every squirrel-cage fan that does not have a switchover device from star to delta. The changeover switch used can be designed as a remote-controlled contactor, a roller switch, a lever switch or the like.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1937V0034132 DE692297C (en) | 1937-09-01 | 1937-09-01 | Starting procedure for three-phase short-circuit rotor motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1937V0034132 DE692297C (en) | 1937-09-01 | 1937-09-01 | Starting procedure for three-phase short-circuit rotor motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE692297C true DE692297C (en) | 1940-06-17 |
Family
ID=7588649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1937V0034132 Expired DE692297C (en) | 1937-09-01 | 1937-09-01 | Starting procedure for three-phase short-circuit rotor motors |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE692297C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1058611B (en) * | 1953-07-17 | 1959-06-04 | Siemens Ag | Arrangement for reversing the direction of rotation of a three-phase asynchronous motor with the aid of controllable direct current pre-magnetized choke coils |
| DE1110732B (en) * | 1955-09-08 | 1961-07-13 | Licentia Gmbh | Cylindrical potentiometer for controlling drives |
| WO1992012570A1 (en) * | 1991-01-08 | 1992-07-23 | Herbert Obermair | Circuit for influencing the start-up and/or braking behaviour of three-phase asynchronous motors |
-
1937
- 1937-09-01 DE DE1937V0034132 patent/DE692297C/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1058611B (en) * | 1953-07-17 | 1959-06-04 | Siemens Ag | Arrangement for reversing the direction of rotation of a three-phase asynchronous motor with the aid of controllable direct current pre-magnetized choke coils |
| DE1110732B (en) * | 1955-09-08 | 1961-07-13 | Licentia Gmbh | Cylindrical potentiometer for controlling drives |
| WO1992012570A1 (en) * | 1991-01-08 | 1992-07-23 | Herbert Obermair | Circuit for influencing the start-up and/or braking behaviour of three-phase asynchronous motors |
| US5325033A (en) * | 1991-01-08 | 1994-06-28 | Herbert Obermair | Circuit arrangement for influencing the start-up and/or braking behavior of three-phase A.C. non-synchronous motors |
| AT401126B (en) * | 1991-01-08 | 1996-06-25 | Obermair Herbert | CIRCUIT ARRANGEMENT FOR INFLUENCING THE STARTING AND / OR BRAKING BEHAVIOR OF THREE-PHASE ASYNCHRONOUS MACHINES |
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