DE450294C - Device to prevent eddy currents from occurring in the housing of electric roller table motors with main current winding when switching them on and off - Google Patents

Device to prevent eddy currents from occurring in the housing of electric roller table motors with main current winding when switching them on and off

Info

Publication number
DE450294C
DE450294C DES71661D DES0071661D DE450294C DE 450294 C DE450294 C DE 450294C DE S71661 D DES71661 D DE S71661D DE S0071661 D DES0071661 D DE S0071661D DE 450294 C DE450294 C DE 450294C
Authority
DE
Germany
Prior art keywords
eddy currents
housing
switching
roller table
main current
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
DES71661D
Other languages
German (de)
Inventor
Heinrich Osborne
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.)
Siemens Schuckertwerke AG
Original Assignee
Siemens Schuckertwerke 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 Siemens Schuckertwerke AG filed Critical Siemens Schuckertwerke AG
Priority to DES71661D priority Critical patent/DE450294C/en
Application granted granted Critical
Publication of DE450294C publication Critical patent/DE450294C/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
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

Einrichtung zur Verhinderung des Entstehens von Wirbelströmen in dem Gehäuse von elektrischen Rollgangsmotoren mit Hauptstromwicklung beim Ein- und Umschalten dersel4en. Bei elektrischen Rollgangsmotoren treten beim Einschalten odter Umschalten im Gehäuse Wirbelströme auf, die den Aufbau des Feldes verzögern und so das Anfa'hrdreli.-moment verringern.Device to prevent the formation of eddy currents in the Casing of electric roller table motors with main current winding when switching on and off the same. In the case of electric roller table motors, when they are switched on or switched over Eddy currents in the housing, which delay the build-up of the field and thus the start-up reli.-moment to decrease.

Die Ursache der Wirbelströme sind die bei Hauptstrommotoren unvermeidlichen großen Änderungen des Feldes, das beim Ein- oder Umschalten des Motors stets in kurzer Zeit von Null auf den Maximalwert gebracht werden muß.The cause of the eddy currents are those that are unavoidable in main current motors large changes in the field that is always in must be brought from zero to the maximum value in a short time.

Gemäß der Erfindung wird das Entstehen von Wirbelströmen in dem Gehäuse von Rollgangsm,otoren dadurch verhindert, daß eine stets in demselben Sinne wirkende Zusatzfeldwicklung vorgesehen ist, die unmittelbar vom Netz erregt wird und ständig, auch bei aussetzendem Betrieb, von einem stärkeren Strom durchflossen wird. Durch diese Wicklung wird ein dauernd vorhandenes Grundfeld von bestimmter Höhe geschaffen, so daß die beim Ein- und Ausschalten des Motors auftretenden Feldänderungen nicht mehr von Null, sondern von der Höhe dieses beständigen Grundfeldes ausgehen.According to the invention, eddy currents are created in the housing of roller table motors prevented by always acting in the same sense Additional field winding is provided, which is excited directly by the network and constantly, A stronger current flows through it, even when it is not used. By this winding creates a permanent basic field of a certain height, so that the field changes that occur when the motor is switched on and off do not occur proceed more from zero, but from the height of this constant basic field.

Das Beschleunigungsmoment wird dadurch dem dem gleichen Strom in stationärem Zustand entsprechenden angenähert gleich. -The acceleration torque is thereby the same as the current in stationary State corresponding approximately the same. -

Claims (1)

PATENTANSPRUCH: Einrichtung zur Verhinderung des Entstehens von Wirbelströmen in dem Gehäuse von elektrischen Rollgangsmotoren mit Hauptstromwiclclung beim Ein- und Umschalten derselben, dadurch gekennzeichnet, daß eine in stets demselben Sinne wirkende Zusatzwicklung vorgesehen ist, die unmittelbar vom Netz ,erregt wird und ständig, auch bei aussetzendem oder wechselndem Betriebe, von einem stärkeren Strom durchflossen wird.PATENT CLAIM: Device to prevent the formation of eddy currents in the housing of electric roller table motors with main current winding when starting and switching the same, characterized in that one is always in the same sense Acting additional winding is provided, which is excited directly from the network and constantly, even with intermittent or changing operations, from a stronger current is traversed.
DES71661D 1925-09-27 1925-09-27 Device to prevent eddy currents from occurring in the housing of electric roller table motors with main current winding when switching them on and off Expired DE450294C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES71661D DE450294C (en) 1925-09-27 1925-09-27 Device to prevent eddy currents from occurring in the housing of electric roller table motors with main current winding when switching them on and off

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES71661D DE450294C (en) 1925-09-27 1925-09-27 Device to prevent eddy currents from occurring in the housing of electric roller table motors with main current winding when switching them on and off

Publications (1)

Publication Number Publication Date
DE450294C true DE450294C (en) 1927-10-05

Family

ID=7502625

Family Applications (1)

Application Number Title Priority Date Filing Date
DES71661D Expired DE450294C (en) 1925-09-27 1925-09-27 Device to prevent eddy currents from occurring in the housing of electric roller table motors with main current winding when switching them on and off

Country Status (1)

Country Link
DE (1) DE450294C (en)

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