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DIRECT-AXIS SUBTRANSIENT OPEN-CIRCUIT TIME CONSTANT [1 record]

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Record 1 2014-08-28

English

Subject field(s)
  • Measurements of Electricity
  • Electric Rotary Machines
DEF

The time required, following a sudden change in operating conditions, for the rapidly changing component present during the first few cycles of the open-circuit armature winding voltage that is due to direct-axis flux, to decrease to 1/e, that is 0.368 of its initial value, the machine running at rated speed.

OBS

direct-axis sub-transient open-circuit time constant: term and definition standardized by the International Electrotechnical Commission (IEC).

Key term(s)
  • direct-axis subtransient open-circuit time constant

French

Domaine(s)
  • Mesures de grandeurs électriques
  • Machines tournantes électriques
DEF

Temps nécessaire pour que la composante à amortissement rapide de la tension de l'induit à circuit ouvert, due au flux longitudinal, présente dans les toutes premières périodes qui suivent une variation brusque des conditions de fonctionnement, décroisse jusqu'à 1/e, c'est-à-dire 0,368 fois sa valeur initiale, la machine tournant à sa vitesse assignée.

OBS

composante de temps subtransitoire longitudinale à circuit ouvert : terme et définition normalisés par la Commission électrotechnique internationale (CEI).

Spanish

Campo(s) temático(s)
  • Medida de la electricidad
  • Máquinas rotativas eléctricas
DEF

Tiempo necesario para que la componente de amortiguamiento rápido de la tensión del inducido en circuito abierto, debida al flujo longitudinal, presente en los primeros pocos períodos que siguen a una variación brusca de las condiciones de funcionamiento, decrezca hasta 1/e, es decir, 0,368 veces su valor inicial, girando la máquina a su velocidad nominal.

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