DE577354C - Three-phase series motor - Google Patents
Three-phase series motorInfo
- Publication number
- DE577354C DE577354C DES104840D DES0104840D DE577354C DE 577354 C DE577354 C DE 577354C DE S104840 D DES104840 D DE S104840D DE S0104840 D DES0104840 D DE S0104840D DE 577354 C DE577354 C DE 577354C
- Authority
- DE
- Germany
- Prior art keywords
- short
- phase series
- series motor
- low speed
- operating
- 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
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K27/00—AC commutator motors or generators having mechanical commutator
- H02K27/12—AC commutator motors or generators having mechanical commutator having multi-phase operation
- H02K27/14—AC commutator motors or generators having mechanical commutator having multi-phase operation in series connection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
Description
DEUTSCHES PJICHGERMAN PJICH
AUSGEGEBENAIfI
29. MAI 1933 ISSUED AIFI
May 29, 1933
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
^ 577354 KLASSE 21 d2 GRUPPE^ 577354 CLASS 21 d2 GROUP
Zusatz zum Patent 548Addendum to patent 548
Patentiert im Deutschen Reiche vom 3. Juni 1932 ab Pas Hauptpatent, hat angefangen am 19. September 1931.Patented in the German Empire on June 3, 1932 Pas main patent, started on September 19, 1931.
In dem Hauptpatent ist ein Verfahren zum Betrieb von durch Änderung der Frequenz regelbaren Drehstromreihenschlußmotoren geschützt, nach dem die Reihenschlußmotoren bei niedriger Drehzahl so umgeschaltet werden, daß sie als Asynchronmotoren arbeiten. Bei Motoren, die nach einem derartigen Verfahren arbeiten, ist der sekundäre Teil stets über den Kommutator kurzgeschlossen. Da nun der Übergangswiderstand der Bürsten bei derartigen Motoren mit Rücksicht auf die Kommutierung verhältnismäßig sehr groß ist,' besitzen derartige Motoren, wenn sie mit niedriger Drehzahl als Asynchronmotoren arbeiten, eine sehr weiche Charakteristik, d. h. der Drehzahlabfall in Abhängigkeit von der Belastung ist verhältnismäßig groß.In the main patent is a method of operating by changing the frequency adjustable three-phase series-wound motors, after which the series-wound motors be switched at low speed so that they work as asynchronous motors. In engines that work according to such a method, the secondary part is always short-circuited across the commutator. Since the contact resistance of the brushes is now at such engines with regard to the Commutation is relatively very large, 'have such motors when they are with work at low speed than asynchronous motors, a very soft characteristic, i.e. H. the speed drop as a function of the load is relatively large.
Nach der Erfindung läßt sich dieser Nachteil dadurch beseitigen, daß man eine zusätz-According to the invention, this disadvantage can be eliminated by adding an additional
ao liehe Vorrichtung vorsieht, die es ermögliclit, den Sekundärteil unabhängig von dem Kommutator kurzzuschließen. Die Anwendung einer derartigen Vorrichtung hat, abgesehen davon,, daß die Charakteristik der Maschineao lent device provides that make it possible short-circuit the secondary part independently of the commutator. The application such a device has, besides, that the characteristics of the machine
•S5 wesentlich härter wird, den Vorteil, daß Verluste vermieden und der, Kommutator geschont wird.• S5 becomes much harder, the advantage that losses avoided and the commutator is spared.
Die Erfindung kann in verschiedener Weise verwirklicht werden. Entweder kann man zusätzliche Schleifringe vorsehen, die an die Ankerwicklung angeschlossen sind und über welche der Motor bei asynchronem Betrieb kurzgeschlossen wird. Um eine besonders harte Charakteristik bei derartigen Motoren zu erzielen, empfiehlt es sich, metallhaltige 35· Kohlebürsten für die Schleifringe anzuwenden, die einen kleinen Widerstand besitzen.The invention can be practiced in various ways. Either you can get additional Provide slip rings that are connected to the armature winding and over which the motor is short-circuited in asynchronous operation. To one special To achieve hard characteristics in such motors, it is advisable to use metal-containing 35 Use carbon brushes for the slip rings, which have a small resistance.
Man kann indessen die Schleifringe auch ganz umgehen, wenn man die von den normalen Drehstrommotoren her bekannten Kürzschlußvorriehtungen vorsieht.You can, however, bypass the slip rings entirely if you use the normal ones Three-phase motors provides known short-circuit devices.
Es sei noch erwähnt, daß die Anordnung von Schleifringen besonders vorteilhaft ist bei Hdehspannungsmotoren. Man kann bei diesen beim. Betrieb mit niedriger Drehzahl den 45· Läufer mit niederfrequenten Strömen speisen und den Ständer, welcher Hochspannung führt, kurzschließen. Infolgedessen kann die niederfrequente Hilfsspannungsquelle für eine sehr kleine Spannung bemessen werden. SP It should also be mentioned that the arrangement of slip rings is particularly advantageous in the case of high-tension motors. You can do this at. Operation at low speed Feed the 45 · rotor with low-frequency currents and short-circuit the stator, which carries high voltage. As a result, the low-frequency auxiliary voltage source can be dimensioned for a very small voltage. SP
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES104840D DE577354C (en) | 1932-06-03 | 1932-06-03 | Three-phase series motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES104840D DE577354C (en) | 1932-06-03 | 1932-06-03 | Three-phase series motor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE577354C true DE577354C (en) | 1933-05-29 |
Family
ID=7526140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES104840D Expired DE577354C (en) | 1932-06-03 | 1932-06-03 | Three-phase series motor |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE577354C (en) |
-
1932
- 1932-06-03 DE DES104840D patent/DE577354C/en not_active Expired
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