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maquinas de corriente alterna.pdf - Universidad Tecnológica de ...

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232 Capítulo 3. La máquina <strong>de</strong> inducción<br />

Reemplazando en la formula anterior:<br />

3P ent /fase(3φ) = 2P ent /fase(2φ),<br />

P ent /fase(3φ) = 2 3 P ent/fase(2φ),<br />

P ent /fase(3φ) = 2 (42.075,54) = 28.050,36 W.<br />

3<br />

que es la potencia por fase <strong>de</strong>l trifásico.<br />

P g total<br />

= 2I 2 1 Re(Z ab),<br />

P g total = 2(150,28) 2 (1,84),<br />

P g total = 83.109,4 W.<br />

P t mec = (1 − s)P g total ,<br />

P t mec = (1 − 0,02)(83.109,4),<br />

P t mec = 81.447,22 W.<br />

P cu = sP g total ,<br />

P cu = (0,02)(83.109,4),<br />

P cu = 1662,19 W.<br />

T g = P g total<br />

ω s<br />

= 83.109,4 W<br />

(377/2)<br />

= 440,9 Nw − m.<br />

b)<br />

s maxT =<br />

R ′ a<br />

√R 2 th + (χ th + χ ′ a )2 ,<br />

s maxT =<br />

Z th =R th + jχ th =<br />

j10(0,04 + j0,31)<br />

0,045 + j(10 + 0,31)<br />

0,042 + j0,3 = 0,3∠81,96 ◦ .<br />

0,04<br />

√<br />

(0,042) 2 + (0,3 + 0,21) 2 = 0,078. ◭<br />

Deslizamiento <strong>de</strong>l torque máximo = 0,078.<br />

ω m = ω(1 − s),

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