Napon i petlje transformatora – problemi i rješenja

1.

Na osnovu gornje tabele, pronađite R i P.

rastvor

Transformatorova jednačina:

V_s N_p = N_s V_p i V_p I_p = V_s I_s

V_s = secondary voltage, V_p = primary voltažaN_s = secondary loops, N_p = primary loops_, I_p = primary strujaja_s = secondary current

Primarni napon (V_p)

V_p I_p = V_s I_s

V_p (4) = (10)(80)

V_p = 800/4

V_p = R = 200 volti

Sekundarne petlje (N_s)

V_s N_p = N_s V_p

(10)(600) = N_s (200)

6000 = 200 N_s

N_s = 6000/200

N_s = P = 30 loops

2.

Based on the above table, find K and L.

Rešenje:

Secondary current (I_s) of transformer 1 :

V_p I_p = V_s I_s

(200)(3) = (300)(I)_s)

I_s = 600/300

I_s = K = 2 A

Sekundarni napon (V_s) of transformator 2:

V_p I_p = V_s I_s

(40)(0,75) = V_s (1)

V_s = L = 30 volti

3.

Based on the table above, find P and Q.

Rešenje:

Primarni napon (V_p)

V_s N_p = N_s V_p

(220)(300) = (600) V_p

(220)(3) = (6) V_p

660 = 6 V_p

V_p = 660/6

V_p = P = 110 volti

Primary current (I_p)

V_p I_p = V_s I_s

(110)(I)_p) = (220)(2)

(110)(I)_p) = 440

I_p = 440/110

I_p = Q = 4 A