p2chap2.py

Created on October 04, 2024

399 Bytes

P=UIcosphi

 

facteur de puissance = cosphi

 

u(t)= U0cos(wt+phi)

 

valeur moyenne : 1/Tintegralu(t)

 

Ueff = racine (valeur moyenne u au carre)

 

u(t)=Um.cos(wt+phi)

Ueff = Um/racine2

Ieff = im/racine2

 

Zbar = Ze(jphi)

 

u=moduleZ.i

 

ibar=ime(jwt)

ubar=ZI0e(j(wt+phi))

phi>0 donc u(t) ets en avance de phase

 

P=Ueff.Ieff.cos(phi) = Re(Z).Ieff**2=Re(Y).Ueff**2

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