aelec.py

Created by klfraimbow

Created on March 17, 2023

866 Bytes


MASYNCHRONE
Etoile: tension borne enroulement
tension simple V=230V V=U/sqrt3
moteur grille
Pa(W)= sqrt3 * U *I cos0
Pu(W)=Tu(N.m)*w(rad.s)
g= ns-n /ns %
p=f/n  ns=f/p
r redu = Vsortie/Ventree


MSYNCHRONE
ns(tr.s)=f/p    f=p*ns
g=pas glissement meme vitesse

p         1   2   3 
n(trs)   50  25   16,7
n(trmin)3000 1500 1000 

MS : Pa(W)= sqrt3 * U *I cos0 
Pu(W)=Tu(N.m)*w(rad.s)
Pp=Pa-Pu

w(rad.s)=2pin(trs) 
        = 2pi* n(trmin)/60
n=Pu/Pa    

Alter: Pa(W)=Tn*w
Pu= sqrt*3*U*I*cos0 
S= sqrt3 U I   VA

MCC : 
Inversion du sens de rotation d'un moteur à courant continu : 
Il suffit d'inverser le sens du courant d'induit I, donc d'inverser 
la polarité de la tension d'alimentation du moteur.

M/:   U et I sens oppose U=E+RI
G/:   U et I meme sens  U=E-RI

Pa=U I  + Ue*Ie 
Pem = E * I = Tem* Ohm 
Pu= Tu* Ohm 

Tr=Tu=Tem=K*I  et Ohm=alpha*U

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