DE350743C - Procedure for checking the air gap of AC motors - Google Patents

Procedure for checking the air gap of AC motors

Info

Publication number
DE350743C
DE350743C DENDAT350743D DE350743DD DE350743C DE 350743 C DE350743 C DE 350743C DE NDAT350743 D DENDAT350743 D DE NDAT350743D DE 350743D D DE350743D D DE 350743DD DE 350743 C DE350743 C DE 350743C
Authority
DE
Germany
Prior art keywords
air gap
motors
checking
procedure
same
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
DENDAT350743D
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.)
ELIMAR TEBBE
Original Assignee
ELIMAR TEBBE
Publication date
Application granted granted Critical
Publication of DE350743C publication Critical patent/DE350743C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34Testing dynamo-electric machines
    • G01R31/343Testing dynamo-electric machines in operation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Description

Verfahren zur Kontrolle des Luftspaltes von Wechselstrommotoren. Bei Wechselstromntotoren und speziell Dreltstromasvnchronntotoren ist die genaue Kontrolle des Luftspaltes von großer Bedeutung. Diese wurde bisher bei stillstehenden, ausgeschalteten Motoren vorgenommen. Bei gekapselten Motoren ist dieselbe nach den bisher üblichen 11ethoden besonders schwierig. Die nachstehend beschriebene I?rfincltutg gestattet die Kontrolle des Luftspaltes unalhängig von der Ausführung des -Motors jederzeit während des Betriebes hei eingeschalteten Motoren, so daß außer der statischen Lage auch der Einfluß des magnetischen Zuges berücksichtigt wird.Procedure for checking the air gap of AC motors. at AC motors, and especially DC synchronous motors, is the precise control of the air gap is of great importance. This was previously switched off when the system was stationary Motors made. In the case of encapsulated motors, the same is the same as previously usual Methods particularly difficult. The I? Rfincltutg described below is permitted Checking the air gap at any time, regardless of the version of the motor Motors switched on during operation, so that apart from the static position the influence of the magnetic pull is also taken into account.

An vier, sechs oder mehreren im Stator entsprechend verteilten Stellen -werden außer der normalen Wicklung einige Windungen aus dünnem Draht durch ein Paar 'Nuten, welche zu einem Polpaare gehören, gezogen, wie dieselben auf der beiliegenden Zeichnung durch stark ausgezogene Linien angegeben sind. Durch die schwach ausgezogenen Linien ist die normale Wicklung angedeutet. (Bei Maschinen mit niedriger Spannung kann die Wicklung auch direkt oder ein Teil derselben an den entsprechenden Stellen dazu benutzt werden.) Die Enden dieser Wicklungen werden an besondere Klemmen geführt, welche leicht zugänglich eventuell am -Motorkörper angebracht werden. Auf dem Klemmbrett für diese Klemmen werden die höchste und die niedrigste zulässige Spannung angegeben.. wie sich dieselben aus der nachstehenden Beschreibung der Wirkungsweise ergeben. In den vorstehend angegebenen 11eß@viclclungen «-erden Spannungen induziert, «-elche jeweils von der Feldstärke abhängig sind. Bei genau zentriertem Rotor ist die Spannung zwischen sämtlichen Klemmen also gleich. Ändert sich der Luftspalt durch Auslaufen der Lager, Durchbiegen der «gelle infolge 1nagnetischen Zuges usw., so ändert sich auch die Gleichmäßigkeit des Feldes im Luftspalt nach den magnetischen Widerständen. Demnach steigt die Spannung in der betreffenden@Vicklung, bei welcher der Luftspalt kleiner geworden ist, und fällt in der entgegengesetzten Wicklung.At four, six or more locations appropriately distributed in the stator - In addition to the normal winding, a few turns of thin wire are used Pair of slots belonging to a pair of poles, drawn like the same on the enclosed one Drawing are indicated by strong lines. By the weakly drawn out The normal winding is indicated in the lines. (For machines with low voltage the winding can also be directly or part of it at the appropriate points can be used for this purpose.) The ends of these windings are led to special terminals, which may be easily accessible on the engine body. On the clipboard the highest and lowest permissible voltages are given for these terminals. as the same result from the following description of the mode of operation. Tensions are induced in the above-mentioned elements each depend on the field strength. When the rotor is exactly centered, the voltage is the same between all terminals. If the air gap changes due to leakage the bearing, bending of the same as a result of magnetic pull, etc., changes also the uniformity of the field in the air gap after the magnetic resistances. Accordingly, the voltage increases in the relevant @ Vicklung at which the air gap has become smaller and falls in the opposite winding.

Bei einer der Zeichnung entsprechenden Kontrolleinrichtung wurden bei gut zentriertem Rotor zwischen allen Klemmen 3.2 Volt gemessen. Bei exzentrisch gelagertem Motor desselben Motors betrug die höchste Spannung 3, j Volt und die niedrigste Spannung 2,81T olt.At a control device corresponding to the drawing measured 3.2 volts between all terminals with the rotor well centered. At eccentric stored motor of the same motor, the highest voltage was 3.1 volts and the lowest voltage 2,81T olt.

Claims (1)

PATENT-ANSPRUCH: Verfahren zur Kontrolle des 1_uftspaltes von Wechselstronintotoren durch Spannungsmessung, dadurch gekennzeichnet, claß die durch die Luftspaltänderung hervorgerufene Änderung der Felrl:tärke im Luftspalt durch Spannungsnies#nng an im ,:#tator verteilten Hilfswicklungen r,rician verschiedenen Teilen der Betrichsnicklung des Stators bestimmt wird.PATENT CLAIM: Method for checking the 1_uftspaltes of alternating current motors by voltage measurement, characterized by the change in the air gap Caused change in the field strength in the air gap due to tension sneezing im,: # tator distributed auxiliary windings r, rician different parts of the area of the stator is determined.
DENDAT350743D Procedure for checking the air gap of AC motors Expired DE350743C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE350743T

Publications (1)

Publication Number Publication Date
DE350743C true DE350743C (en) 1922-03-25

Family

ID=6264026

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT350743D Expired DE350743C (en) Procedure for checking the air gap of AC motors

Country Status (1)

Country Link
DE (1) DE350743C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226200B (en) * 1963-11-02 1966-10-06 Continental Elektro Ind Ag Arrangement for the metrological acquisition and monitoring of air gap changes in electrical machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226200B (en) * 1963-11-02 1966-10-06 Continental Elektro Ind Ag Arrangement for the metrological acquisition and monitoring of air gap changes in electrical machines

Similar Documents

Publication Publication Date Title
DE350743C (en) Procedure for checking the air gap of AC motors
DE19853966A1 (en) Electrical machine stator winding e.g. for six-pole servomotor
DE102018120157A1 (en) Stator for a DC motor
DE287559C (en)
DE739897C (en) Electric machine with balancing resistors
DE377532C (en) Pole wheel composed of leaf magnets for small electrical machines and apparatus
DE254426C (en)
DE200661C (en)
DE3231312A1 (en) MULTI-LAYER ANCHOR DEVELOPMENT FOR A MOTOR WITH A SINGLE AIR GAP
DE902401C (en) Concentric coil winding for electrical machines
DE1638898A1 (en) Exciter generator for brushless synchronous machines
DE161849C (en)
DE484460C (en) Control device for diesel-electric traction vehicles with an externally excited generator, whose drive machine works at several speeds and in whose armature circuit there is a damping resistor over which the excitation current is passed
AT57691B (en) Dynamo machine for constant tension with variable number of revolutions and loads.
DE356055C (en) Circuit to achieve practically constant terminal voltage in DC machines with variable speed
DE415274C (en) Cross-field direct current machine
DE183514C (en)
DE619260C (en) AC generator of the homopolar inductor type for generating modulated alternating current
DE471036C (en) AC induction motor
DE705646C (en) Testing device for engines or prime movers
DE379737C (en) Medium and high frequency machine or converter
DE370543C (en) Device for expanding the control range of fast regulators
DE298308C (en)
DE678653C (en) DC motor for a constant current system
DE455158C (en) Single machine cascade type dynamoelectric machine