Electric Machine; Check image, all question there. Let’s consider three phase, Y connected, 220 volt (line to line), 7.5 kW, 55 Hz, four pole IM has the following parameter values in Ω/phase referred to the stator: R1=0.294Ω , R2=0.144 Ω, X1=0.503 Ω, X2=0.209 Ω, Xm=13.25 Ω Determine the following for 0.02 slip. a)Electromechanical Torque(Tmech) Electromechanical power(Pmech) b)Maximum electromechanical torque(Tmax),Corresponding speed(nr,max) c)Electromechanical starting torque(Tstart), Corresponding stator load current(I2,start)

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Electric Machine; Check image, all question there.

Let’s consider three phase, Y connected, 220 volt (line to line), 7.5 kW, 55 Hz, four pole IM has the following parameter values in Ω/phase referred to the stator:

R1=0.294Ω , R2=0.144 Ω, X1=0.503 Ω, X2=0.209 Ω, Xm=13.25 Ω

Determine the following for 0.02 slip.

a)Electromechanical Torque(Tmech) Electromechanical power(Pmech)

b)Maximum electromechanical torque(Tmax),Corresponding speed(nr,max)

c)Electromechanical starting torque(Tstart), Corresponding stator load current(I2,start)

X,
X,
R,
ww
i(1)
i,(1)
R,
X_
Fig. Equivalent Circuit of IM
Lest's consider three phase, Y connected, 220 volt(line to line), 7.5 kW, 55 Hz. four pole IM has the following parameter values in /phase
referred to the stator:
R = 0.294 N, R = 0.144 N, X1 = 0.503 N, X2 = 0.209 N, Xm = 13.25 N
Determine the following for 0.02 slip
a) Electromechanical Torque (Tmech), Electromechanical power (Pmech)
b) Maximum electromechanical torque (Tmaz), Corresponding speed (n, maz )
C) Electromechanical statrting torque (Tstart), Corresponding stator load current (I, start)
a. Tmech = 33.2165 N. m, Pmech
5624.6 W, n,maz
1333.51 rpm, Tmaz = 126.956 N. m, I2 start = 150.265 A, Tstart
56.4528 N
b. Tmech = 33.3705 N. m, Pmech
7293.87 W, n7,maz
950.539 rpm, Tmaz = 153.768 N. m, I2,start = 175.257 A, Tztart
70.2798
c. Tmech
35.4105 N. m, Рпеch
3933.77 W, nmaz = 919.728 rpm, Tmaz = 154.791 N. m, I2start = 125.567 A, Ttart = 72.5229 .
d. Tmech = 35.4105 N. m, Pmech =
7872.83 W, n,maz = 825.827 rpm, Tmaz = 154.758 N.m, Istart = 145.657 A, Ttart = 73.7912
e. Tmech = 35.2537 N. m, Pmech
2353.62 W, ny, maz
925.793 rpm, Tmaz = 220.437 N. m, I2 start = 115.562 A, Ttart = 57.7327
Transcribed Image Text:X, X, R, ww i(1) i,(1) R, X_ Fig. Equivalent Circuit of IM Lest's consider three phase, Y connected, 220 volt(line to line), 7.5 kW, 55 Hz. four pole IM has the following parameter values in /phase referred to the stator: R = 0.294 N, R = 0.144 N, X1 = 0.503 N, X2 = 0.209 N, Xm = 13.25 N Determine the following for 0.02 slip a) Electromechanical Torque (Tmech), Electromechanical power (Pmech) b) Maximum electromechanical torque (Tmaz), Corresponding speed (n, maz ) C) Electromechanical statrting torque (Tstart), Corresponding stator load current (I, start) a. Tmech = 33.2165 N. m, Pmech 5624.6 W, n,maz 1333.51 rpm, Tmaz = 126.956 N. m, I2 start = 150.265 A, Tstart 56.4528 N b. Tmech = 33.3705 N. m, Pmech 7293.87 W, n7,maz 950.539 rpm, Tmaz = 153.768 N. m, I2,start = 175.257 A, Tztart 70.2798 c. Tmech 35.4105 N. m, Рпеch 3933.77 W, nmaz = 919.728 rpm, Tmaz = 154.791 N. m, I2start = 125.567 A, Ttart = 72.5229 . d. Tmech = 35.4105 N. m, Pmech = 7872.83 W, n,maz = 825.827 rpm, Tmaz = 154.758 N.m, Istart = 145.657 A, Ttart = 73.7912 e. Tmech = 35.2537 N. m, Pmech 2353.62 W, ny, maz 925.793 rpm, Tmaz = 220.437 N. m, I2 start = 115.562 A, Ttart = 57.7327
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