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EP0228535A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method and device to determine the flux angle of an induction machine i.e. to operate the machine according to position

Assignee: Siemens AG
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Filing: 1986-11-04
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Granted: —
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Expires: 2006-11-04
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Abstract

Abstract Translated from German Um beim Anlauf einer Drehfeldmaschine, z.B. bei Permanterregung, die Feldrichtung ohne mechanischen Geber feststellen zu können, wird dem Ständerstrom oder der Ständerspannung ein hochfrequenter Anteil (iz*) aufgeprägt. In die Ständerwicklungen werden dadurch hochfrequente Spannungsanteile (bzw. Stromanteile) eingekoppelt, deren Hüllkurven ("Enveloppe") der Lage der Feld- oder Läuferachse zugeordnet werden. Vorzugsweise werden von einem Flußrechner (60) die Komponenten eines Modellvektors (FM) errechnet, die ebenfalls Hochfrequenzanteile enthalten. Die in einem Filter (61) isolierten Hochfrequenzanteile werden in einem Mittelwertbildner (62) den Komponenten des Richtungsvektors (fx) zugeordnet. Dadurch ist ein feldorientierter Betrieb einer Synchronmaschine möglich. In order to start up a three-phase machine, e.g. with permanent excitation to be able to determine the field direction without a mechanical encoder, a high-frequency component (iz *) is impressed on the stator current or the stator voltage. As a result, high-frequency voltage components (or current components) are coupled into the stator windings, the envelopes of which are assigned to the position of the field or rotor axis. The components of a model vector (FM) which likewise contain high-frequency components are preferably calculated by a flow computer (60). The high-frequency components isolated in a filter (61) are assigned to the components of the direction vector (fx) in an averager (62). This enables field-oriented operation of a synchronous machine.

Inventors

  • 👤 Hans-Dieter Dipl.-Ing. Heining
  • 👤 Albert Dr. Wick

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 04:58
CPC Classifications
H; H02; H02P; H02P21/00; H02P21/34

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

DE2132178B2 Cited
DE3026348A1 Cited
DE3347549A1 Cited

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