Les machines synchrones
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Les machines synchrones. principes. Principes. Production de f.é.m. alternatives Champs tournants Champs tournants, suite. f. 50. =. p =. = 4. N S. 12,5. f = p N S. N S = 750 tr/min = 12,5 tr/s et f = 50 Hz . Schéma équivalent d’une phase. L . R. V. E. Pour une phase :.

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Principes1
Principes

  • Production de f.é.m. alternatives

  • Champs tournants

  • Champs tournants, suite


f

50

=

p =

= 4

NS

12,5

f = p NS

NS = 750 tr/min = 12,5 tr/s et f = 50 Hz 


Schéma équivalent d’une phase

L

R

V

E

Pour une phase :

E = k NS(Ie)



Induit = stator

inducteur

Inducteur = rotor

Induit + diodes

alternateur

Alternateur d’excitation

NS

Ie

Moteur d’entraînement

-

+





Barre en deux piles, refroidissement indirect

Barre simple, refroidissement indirect

Barre en quatre piles à refroidissement liquide direct




Centrale de São Simão, 6 alternateurs,

diamètre 17,5 m, 282 MVA


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