DE718216C - Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling - Google Patents

Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling

Info

Publication number
DE718216C
DE718216C DEH159926D DEH0159926D DE718216C DE 718216 C DE718216 C DE 718216C DE H159926 D DEH159926 D DE H159926D DE H0159926 D DEH0159926 D DE H0159926D DE 718216 C DE718216 C DE 718216C
Authority
DE
Germany
Prior art keywords
cross
prevent
lowering
field
idling
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
Application number
DEH159926D
Other languages
German (de)
Inventor
Hans Kohler
Julius Wuest
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HIMMELWERK AG
Original Assignee
HIMMELWERK AG
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 HIMMELWERK AG filed Critical HIMMELWERK AG
Priority to DEH159926D priority Critical patent/DE718216C/en
Application granted granted Critical
Publication of DE718216C publication Critical patent/DE718216C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/40—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by the arrangement of the magnet circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)
  • Control Of Direct Current Motors (AREA)

Description

Einrichtung zur Verhütung des Absinkens der Nutzbürstenspannung von Gleichstromquerfeldmaschinen bei Leerlauf Wie ,alle Glelchstrommaschinen besitzt ,auch die Querfeldmaschine Leinen Restmagnetismus. Dieser ist insbesondere für den Aufbau der Felder bei der Reihensclhlußquerfeldmaschine von großer Bedeutung, da er das Primäroder Längsfeld der Maschine darstellt.Device to prevent the lowering of the useful brush voltage from DC cross-field machines when idling Like all DC machines , also the cross-field machine linen residual magnetism. This is especially for the Structure of the fields in the series connection transverse field machine is of great importance because it represents the primary or longitudinal field of the machine.

Es hat sich nun gezeigt, daß im Laufe der Zeit durch die häufigen Schaltvorgänge, die sich insbesondere beim Lichtbogenschweißen durch Zünden und Abreißen des Lichtbogens erbeben, eine Schwächung des Restmagnetismus eintreten kann. Diese Schwächung der Remanenz wird durch einen Fluß hervorgerufen, der seinen Weg :durch die Welle, den Anker und über .die Lagerschilde nimmt und entgegengesetzt zum Remanenzfluß verläuft. Dadurch kann es nach längerem Betrieb der Querfeldmaschine vorkommen, daß der Restmagnetismus geschwächt wird, was zur Folge hat, daß die Leerlaufspannung ebenfalls zurückgeht. Zur Vermeidung dieses Nachteils wird nach der Erfindung vorgeschlagen, diesem schädlichen Kraftlinienfluß den Weg zu erschweren bzw. diesen zu unterbinden, indem man, wie .es für unipolare Gleich- oder Wechselstrommaschinen :schon vorgeschlagen worden ist, in den Pfad des über die Welle verlaufenden Kraftflusses ,einen hohen magnetischen Widerstand einschaltet.It has now been shown that in the course of time by the frequent Switching processes that occur in particular during arc welding by ignition and When the arc breaks, the residual magnetism is weakened can. This weakening of the remanence is caused by a flow that flows into his Way: through the shaft, the armature and over .the end shields takes and opposite runs to the remanent flux. This can cause it after a long period of operation of the cyclo-cross machine it can happen that the residual magnetism is weakened, with the result that the open-circuit voltage also declines. To avoid this disadvantage, it is proposed according to the invention, to make the path more difficult for this damaging flow of lines of force or to prevent it, by, like .es for unipolar DC or AC machines: already suggested has been, in the path of the flow of power over the wave, a high magnetic resistance turns on.

Nach der Erfindung wird dieser höhe magnetische Widerstand dadurch hergestellt, daß man beide Lagerschilder aus nichmagnetiserbarem Werkstoff herstellt oder die Lager der Maschine gegenüber dem Maschinenständer magnetisch isoliert ausführt.According to the invention, this high magnetic resistance is thereby made that one produces both end shields from non-magnetizable material or the bearings of the machine are magnetically isolated from the machine frame.

Claims (3)

PATENTANSPRÜCHE: r. Einrichtung zur Verhütung des Absinkens der Nutzbürstenspannung von, Gleichstromquerfeldmaschinen bei Leerlauf, dadurch gekennzeichnet, daß den über die Lagerschilde und die Welle. verlaufenden und zum Auslöschen des Längsfeldes der Querfeldmaschine beitragenden Kraftlinien ein hoher magnetischer Widerstand in den Weg gelegt wird. PATENT CLAIMS: r. Device to prevent the lowering of the useful brush voltage of, DC cross-field machines at idle, characterized in that the above the end shields and the shaft. running and to extinguish the longitudinal field The force lines contributing to the cross-field machine have a high magnetic resistance is put in the way. 2. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß beide Lagerschilde aus nichtmagnetisierbarem Werkstoff bestehen. 2. Device according to claim i, characterized in that that both end shields are made of non-magnetizable material. 3. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Lager der Querfeldmaschine gegenüber dem Ständer der 'Querfeldmaschine magnetisch isoliert sind.3. Establishment according to claim i, characterized in that the bearings are opposite to the cross-field machine the stator of the 'cross-field machine are magnetically isolated.
DEH159926D 1939-06-24 1939-06-24 Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling Expired DE718216C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH159926D DE718216C (en) 1939-06-24 1939-06-24 Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH159926D DE718216C (en) 1939-06-24 1939-06-24 Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling

Publications (1)

Publication Number Publication Date
DE718216C true DE718216C (en) 1942-03-06

Family

ID=7183124

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH159926D Expired DE718216C (en) 1939-06-24 1939-06-24 Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling

Country Status (1)

Country Link
DE (1) DE718216C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933162C (en) * 1937-06-08 1955-09-22 Siemens Ag Bearings for electrical machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933162C (en) * 1937-06-08 1955-09-22 Siemens Ag Bearings for electrical machines

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