Lest's consider three phase, Y connected, 220 volt(line to line), 7.5 kW, 75 Hz, four pole IM has the following parameter values in /phase referred to the stator: R = 0.294 N, R2 = 0.144 N, X1 = 0.503 N, X2 = 0.209 N, Xm = 13.25 N Determine the following for 0.015 slip a) Electromechanical Torque (Tmech), Electromechanical power (Pnech) b) Maximum electromechanical torque (Tmaz), Corresponding speed (n, maz) c) Electromechanical statrting torque (Tastart), Corresponding stator load current (I2 start)

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X,
X,
R,
4(1)
R,
X_
Fig. Equivalent Circuit of IM
Lest's consider three phase, Y connected, 220 volt(line to line), 7.5 kW, 75 Hz, four pole IM has the following parameter
values in /phase referred to the stator:
R1 = 0.294 2, R2 = 0.144 N, X1 = 0.503 N, X2 = 0.209 N, Xm = 13.25 N
Determine the following for 0.015 slip
a) Electromechanical Torque (Tmech), Electromechanical power (Pmech)
b) Maximum electromechanical torque (T,maz), Corresponding speed (n, maz)
C) Electromechanical statrting torque (Tstart), Corresponding stator load current (I, start)
a. Tmech = 15.2537 N. m, Pmech = 4353.62 W, n maz = 925.793 rpm, Tmaz = 220.437 N. m, I2 start = 115.562 A,
b. Тпеch — 15.4105 N.m, Pmech
4872.83 W, n,maz
825.827 rpm, Tmaz = 154.758 N. m, I2start = 145.657 A,
c. Tmech = 18.6764 N. m, Pmech
4334.51 W, n,maz = 1818.42 rpm, Tmaz = 93.101 N. m, I2 start = 150.265 A, 1
d. Tmech
13.3705 N. m, Рпеch
4293.87 W, n,maz
950.539 грт, Tmаz
153.768 N. m, I2start = 175.257 A,
e. Tmech
15.4105 N. m, Pmech
4933.77 W, n,maz
919.728 rpm, Tmaz = 154.791 N. m, I2 start = 125.567 A,
%3D
Transcribed Image Text:X, X, R, 4(1) R, X_ Fig. Equivalent Circuit of IM Lest's consider three phase, Y connected, 220 volt(line to line), 7.5 kW, 75 Hz, four pole IM has the following parameter values in /phase referred to the stator: R1 = 0.294 2, R2 = 0.144 N, X1 = 0.503 N, X2 = 0.209 N, Xm = 13.25 N Determine the following for 0.015 slip a) Electromechanical Torque (Tmech), Electromechanical power (Pmech) b) Maximum electromechanical torque (T,maz), Corresponding speed (n, maz) C) Electromechanical statrting torque (Tstart), Corresponding stator load current (I, start) a. Tmech = 15.2537 N. m, Pmech = 4353.62 W, n maz = 925.793 rpm, Tmaz = 220.437 N. m, I2 start = 115.562 A, b. Тпеch — 15.4105 N.m, Pmech 4872.83 W, n,maz 825.827 rpm, Tmaz = 154.758 N. m, I2start = 145.657 A, c. Tmech = 18.6764 N. m, Pmech 4334.51 W, n,maz = 1818.42 rpm, Tmaz = 93.101 N. m, I2 start = 150.265 A, 1 d. Tmech 13.3705 N. m, Рпеch 4293.87 W, n,maz 950.539 грт, Tmаz 153.768 N. m, I2start = 175.257 A, e. Tmech 15.4105 N. m, Pmech 4933.77 W, n,maz 919.728 rpm, Tmaz = 154.791 N. m, I2 start = 125.567 A, %3D
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