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1. A three-phase, eight-pole induction machine has equivalent two-phase parameters Rs 60mQ, Rr-50mQ, Ls 9.27 mH,...
. A three – phase, 460V, 60Hz, 4 – pole Y – connected induction motor has the following equivalent circuit parameters: Rs = 0.42Ω, Rr ′ = 0.23Ω, Xs = Xr ′ =0.82Ω, and Xm = 22Ω. The no – load loss Ploss = 60W, assumed as a constant. The rotor speed is 1750
. A three-phase, 460V, 60Hz, 4 – pole Y – connected induction motor has the following equivalent circuit parameters: Rs = 0.42Ω, Rr ′ = 0.23Ω, Xs = Xr ′ =0.82Ω, and Xm = 22Ω. The no load loss Ploss = 60W, assumed as a constant. The rotor speed is 1750 rpm.Use the approximate equivalent circuit ( i.e. the Xm branch is at the very left of the circuit) determine the followinga. the synchronous speedb. the slip sc. the input...
The equivalent circuit of a 440 V, 3-phase, 8 pole, and 50 Hz star-connected induction motor (HELP)
Question: The equivalent circuit of a 440 V, 3-phase, 8 pole, and 50 Hz star-connected induction motor is shown in figure 1. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the rotor is rotating freely without any mechanical load. Fig. 1 The per-phase equivalent circuit of a 3-phase induction motora) Determine the line voltage and power factor on the...
2. A 60 Hz 4-pole, 3-phase induction machine operating at s = 0.028 with rotational losses...
2. A 60 Hz 4-pole, 3-phase induction machine operating at s = 0.028 with rotational losses of 380 W has following parameters for a single-phase: Source voltage is 120 Vrms Rs = 0.39 2, Xs = 0.46 2, XM = 25 2, R'R 0.25 2, X'R = 0.82 2 The rotor mechanical speed is given to be 1749.6 rpm. a. (5) Calculate the real input power, Pin. b. (3) Calculate the power delivered to the rotor. c. (3) Calculate the...
Equivalent circuit of 440V, 3-phase, 8 pole, 50 Hz star-connected induction motor
The equivalent circuit of a 440 V, 3-phase, 8 pole, and 50 Hz star-connected induction motor is shown in figure 1. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the rotor is rotating freely without any mechanical load.a) Determine the line voltage and power factor on the short circuit test;b) We need to apply a low...
For a 6-pole, 2-phase squirrel-cage induction machine, the following parameters are given: 10, .is . Žml,...
For a 6-pole, 2-phase squirrel-cage induction machine, the following parameters are given: 10, .is . Žml, .mas : 1 BrnII,? 0.5?, l?r 1mil The induction machine works as a motor being supplied by a 60-Hz source. The rotor speed is ar360 rads In his ip of operaion, s1A1. A; 25.1/1/1.9° A, calculate the following (i) Electromagnetic torque (6') (ii) Rotor copper loss due to the rotor winding resistance (5') (ii) Mechanical power delivered to the load. (6') Determine Vas, las,...
A three-phase 4 pole wye connected 220 V, 15 Hp, 50 Hz induction machine (rated conditions) has t...
A three-phase 4 pole wye connected 220 V, 15 Hp, 50 Hz induction machine (rated conditions) has the following parameters per phase refereed to the stator. RI : 0.29 Ω , R2 0. 14 Ω , Xi-0.50 Ω , X2-0.20 Ω , Xm-1 0.53 Ω The total windage and core losses can be assumed to be a constant 350 W. If the machine is operating at rated voltage and frequency with a 5.5% slip, find the steady-state: (a) 10pts. Mechanical...
A 3-phase, 690 V, star-connected, 50 Hz, 6-pole induction machine has phase-equivalent circuit parameters of: R1 = 0.045 , R2 = 0.06 , X1 = 0.16 , X2 = 0.28 and Xm = 6 (i) Calculate the peak torque and the slip at which this occu
A 3-phase, 690 V, star-connected, 50 Hz, 6-pole induction machine has phase-equivalent circuit parameters of: R1 = 0.045 , R2 = 0.06 , X1 = 0.16 , X2 = 0.28 and Xm = 6 (i) Calculate the peak torque and the slip at which this occurs. (ii) Calculate the starting torque, starting current and power factor. (iii) Sketch a plausible torque-speed characteristic for this machine based on the results from (i) and (ii). (iv) Calculate the Active Power ...
3) A four pole 75 HP 50 Hz induction motor with an efficiency of 93.4% has...
3) A four pole 75 HP 50 Hz induction motor with an efficiency of 93.4% has equivalent resistance and equivalent reactance per phase of 0.3000and 0.78 000OTHE blocked rotor voltage per phase is 175V. If the rotor is turning at 1425 rpm, determine synchronous speed, slip, rotor impedance, rotor current, total three phase apparent power crossing the air gap, its active and reactive components, rotor power factor, shaft speed, mechanical power developed and developed torque. (30 Points)
I want to solve this problem step by step. Thanks (35 points) Induction Generator Real Power Generation. A three phase, 220V line to line, six pole, 60Hz, wye connected induction machine op...
I want to solve this problem step by step. Thanks
(35 points) Induction Generator Real Power Generation. A three phase, 220V line to line, six pole, 60Hz, wye connected induction machine operates at rated voltage as a generator at a slip of-0.04. Its equivalent circuit parameters are the same as those in problem #1. The input mechanical power at the rotor (this is a generatorl) is 5.2kW. The core losses are 200Watts; friction and windage losses are 17 Watts; treat...
A 3 phase, 440 V, 6 pole, 970 rpm, 50 Hz, Y-connected induction motor has the...
A 3 phase, 440 V, 6 pole, 970 rpm, 50 Hz, Y-connected induction motor has the following parameters referred to the stator Rs = 0.2 Ω, Rr'一0.15 Ω, xs-x-= 0.4 Ω The stator to rotor turns ratio is 3.5 The motor speed is controled by the Static Scherbius Drive. The drive is designed for a speed range of 30% below the synchronous speed. The maximum value of firing angle is 170'. Calculate (i) Turns ratio of the transformer (ii) Torque...
2. A 60 Hz 4-pole, 3-phase induction machine operating at s = 0.028 with rotational losses of 380 W has following parameters for a single-phase: Source voltage is 120 Vrms Rs = 0.39 2, Xs = 0.46 2, XM = 25 2, R'R 0.25 2, X'R = 0.82 2 The rotor mechanical speed is given to be 1749.6 rpm. a. (5) Calculate the real input power, Pin. b. (3) Calculate the power delivered to the rotor. c. (3) Calculate the...
For a 6-pole, 2-phase squirrel-cage induction machine, the following parameters are given: 10, .is . Žml, .mas : 1 BrnII,? 0.5?, l?r 1mil The induction machine works as a motor being supplied by a 60-Hz source. The rotor speed is ar360 rads In his ip of operaion, s1A1. A; 25.1/1/1.9° A, calculate the following (i) Electromagnetic torque (6') (ii) Rotor copper loss due to the rotor winding resistance (5') (ii) Mechanical power delivered to the load. (6') Determine Vas, las,...
A three-phase 4 pole wye connected 220 V, 15 Hp, 50 Hz induction machine (rated conditions) has the following parameters per phase refereed to the stator. RI : 0.29 Ω , R2 0. 14 Ω , Xi-0.50 Ω , X2-0.20 Ω , Xm-1 0.53 Ω The total windage and core losses can be assumed to be a constant 350 W. If the machine is operating at rated voltage and frequency with a 5.5% slip, find the steady-state: (a) 10pts. Mechanical...
3) A four pole 75 HP 50 Hz induction motor with an efficiency of 93.4% has equivalent resistance and equivalent reactance per phase of 0.3000and 0.78 000OTHE blocked rotor voltage per phase is 175V. If the rotor is turning at 1425 rpm, determine synchronous speed, slip, rotor impedance, rotor current, total three phase apparent power crossing the air gap, its active and reactive components, rotor power factor, shaft speed, mechanical power developed and developed torque. (30 Points)
I want to solve this problem step by step. Thanks
(35 points) Induction Generator Real Power Generation. A three phase, 220V line to line, six pole, 60Hz, wye connected induction machine operates at rated voltage as a generator at a slip of-0.04. Its equivalent circuit parameters are the same as those in problem #1. The input mechanical power at the rotor (this is a generatorl) is 5.2kW. The core losses are 200Watts; friction and windage losses are 17 Watts; treat...
A 3 phase, 440 V, 6 pole, 970 rpm, 50 Hz, Y-connected induction motor has the following parameters referred to the stator Rs = 0.2 Ω, Rr'一0.15 Ω, xs-x-= 0.4 Ω The stator to rotor turns ratio is 3.5 The motor speed is controled by the Static Scherbius Drive. The drive is designed for a speed range of 30% below the synchronous speed. The maximum value of firing angle is 170'. Calculate (i) Turns ratio of the transformer (ii) Torque...
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