DE378625C - Device to reduce the additional losses in electrical machines with staggered pole pieces - Google Patents

Device to reduce the additional losses in electrical machines with staggered pole pieces

Info

Publication number
DE378625C
DE378625C DEA35880D DEA0035880D DE378625C DE 378625 C DE378625 C DE 378625C DE A35880 D DEA35880 D DE A35880D DE A0035880 D DEA0035880 D DE A0035880D DE 378625 C DE378625 C DE 378625C
Authority
DE
Germany
Prior art keywords
pole pieces
reduce
electrical machines
additional losses
staggered
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
DEA35880D
Other languages
German (de)
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.)
AEG AG
Original Assignee
AEG AG
Publication date
Priority to DEA35880D priority Critical patent/DE378625C/en
Application granted granted Critical
Publication of DE378625C publication Critical patent/DE378625C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Description

Einrichtung zur Verringerung der zusätzlichen Verluste bei elektrischen Maschinen mit gestaffelten Polschuhen. Bei elektrischen Maschinen, die zur Verhütung der \utenoberschwingungen mit gestaffelten Polschuhen ausgeführt sind, treten in den Ankerblechpaketen infolge der Staffelung der Polschuhe zusätzliche Verluste auf. Man kann sich die Entstehung der zusätzlichen Verluste durch folgende Überlegung klarmachen.Device to reduce the additional losses in electrical Machines with staggered pole pieces. For electrical machines that are used for contraception of the \ ute harmonics are designed with staggered pole pieces, occur in additional losses due to the staggering of the pole pieces on. One can see the emergence of the additional losses by considering the following make clear.

In den Abbildungen bezeichnet a das Ankereisen einer elektrischen Maschine, b und c sind die einen Teile der aufeinanderfolgenden Polschuhe, b' c' die gegenüber diesen Polschuhteilen versetzten benachbarten Polschuhteile,, Die Feldkurve unter den Polschuhen b und c ist durch die ausgezogene Linie d dargestellt, die Feldkurve unter den Polteilen b' und c' durch die gestrichelte Linie d'. Zwischen benachbarten Teilen des lamellierten Eisenkörpers findet also ein Sprung des magnetischen Potentiales statt, dessen Größe und Richtung sich periodisch ändert. Dieser periodisch wechselnde Potentialsprung ruft im Ankerblech Wirbelströme hervor, die durch die übliche Lamellierung nicht verhindert werden können. Außer den Wirbelstromverlusten treten auch Hystereseverluste auf.In the figures, a denotes the anchor iron of an electric Machine, b and c are one part of the successive pole pieces, b 'c' the adjacent pole shoe parts offset with respect to these pole shoe parts ,, The The field curve under the pole pieces b and c is shown by the solid line d, the field curve under the pole parts b 'and c' by the dashed line d '. Between neighboring parts of the lamellar iron body thus find a jump of the magnetic one Potential instead, the size and direction of which changes periodically. This periodically alternating potential jump causes eddy currents in the armature plate, which are caused by the usual lamination cannot be prevented. Except for the eddy current losses hysteresis losses also occur.

Gemäß der Erfindung wird an den Stellen des Ankerblechpaketes, an denen die Polschuhe gestaffelt sind, ein mit Luft oder einem anderen Dielektrikum gefüllter Isolationsschlitz e angeordnet, dessen Breite ausreicht, um die zusätzlichen Verluste auf ein zulässiges Maß herabzusetzen.According to the invention, at the points of the armature core where the pole pieces are staggered, one with air or another dielectric Filled isolation slot e arranged, the width of which is sufficient to the additional Reduce losses to an acceptable level.

Claims (1)

PATENT-ANsPRUcH: Einrichtung zur Verringerung der zusätzlichen Verluste bei elektrischen Maschinen mit gestaffelten Polschuhen, dadurch gekennzeichnet, daß in den Staffelungsebenen Luftschlitze oder mit einem anderen Dielektrikum gefüllte Isolationsschlitze im Ankerblechpaket angeordnet sind. Hierzu i Blatt Zeichnungen.PATENT CLAIM: Means to reduce the additional losses for electrical machines with staggered pole pieces, characterized in that that in the graduation levels air slots or filled with another dielectric Isolation slots are arranged in the armature core. For this purpose i sheet of drawings.
DEA35880D Device to reduce the additional losses in electrical machines with staggered pole pieces Expired DE378625C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA35880D DE378625C (en) Device to reduce the additional losses in electrical machines with staggered pole pieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA35880D DE378625C (en) Device to reduce the additional losses in electrical machines with staggered pole pieces

Publications (1)

Publication Number Publication Date
DE378625C true DE378625C (en) 1923-07-27

Family

ID=6929298

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA35880D Expired DE378625C (en) Device to reduce the additional losses in electrical machines with staggered pole pieces

Country Status (1)

Country Link
DE (1) DE378625C (en)

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