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3c) Induction Machine Analysis [ 8 marks ] A 415 V, 50 Hz, 1450 rpm, three-phase,...
please provide full solution for 3b and 3c ii） 3b) Induction Machine Analysis (9 marks ]...
please provide full solution for 3b and 3c ii）
3b) Induction Machine Analysis (9 marks ] A 415 V, 50 Hz, 1420 rpm, three-phase, star-connected induction machine has the following equivalent-circuit parameters (referred to the stator winding where appropriate): stator resistance R -0.52, rotor resistance R'-0.622 stator leakage reactance X1 = 1.2.2, rotor leakage reactance X' = 1.30 magnetising reactance XM-802, core loss resistance Re - 2400 In your calculations you should use the simplified equivalent circuit. i) The machine...
A 480 V, 60 Hz, 4-pole-pair, three-phase, delta-connected induction motor has the following parameters: R1=0.42 Ω,...
A 480 V, 60 Hz, 4-pole-pair, three-phase, delta-connected induction motor has the following parameters: R1=0.42 Ω, R2=0.23 Ω, X1=0.48 Ω, X2=0.29 Ω, Xm=29.71 Ω where: R1 is the stator resistance R2 is the rotor resistance reflected in the stator; X1 is the stator leakage inductance; X2 is the rotor leakage inductance reflected in the stator; Xm is the magnetising inductance; The rotational losses are 2450 W. The motor drives a mechanical load at a speed of...
4. A three-phase induction motor has the following data: Nominal power, P 7.5 kW Nominal voltage, = 400 V Connection: Y Nominal frequency, f-50 Hz Nominal speed, nn 960 rpm Stator resistance, r,...
4. A three-phase induction motor has the following data: Nominal power, P 7.5 kW Nominal voltage, = 400 V Connection: Y Nominal frequency, f-50 Hz Nominal speed, nn 960 rpm Stator resistance, r, 0.55 Ω Rotor resistance referred to a stator winding phase: r:-0.51 Ω Stator leakage inductance, L,-4.4 mH Rotor leakage inductance referred to a stator winding phase,1'-4.4 mH Magnetising inductance L-65 mH How many pole pairs has the motor? 12] a. Calculate the nominal power factor of the...
A 415-V, Y-connected, 4-pole, 50 Hz, three-phase induction motor has the following parameters on a per-phase basis, as referred to the stator
A 415-V, Y-connected, 4-pole, 50 Hz, three-phase induction motor has the following parameters on a per-phase basis, as referred to the stator: R1 = 0.25 ohms, X1 = 0.75 ohms, R2 = 0.55 ohms, X2 = 1.2 ohms, Xm = 50 ohms. The core loss is 200 W and rotational (mechanical) losses are 200 W. The machine is running at full load at a speed of 1450 r.p.m. Using the exact equivalent circuit, calculate- The total input current, The power factor, The air-gap power developed, The...
A four-pole Y-connected, 415 V, 50 Hz, induction motor has phase equivalent circuit parameters of R1=...
A four-pole Y-connected, 415 V, 50 Hz, induction motor has phase equivalent circuit parameters of R1= 2 ohms. R2=2.2 ohms. X1=X2=4 ohms. X(motor)=90 ohms Under rated condition, the rotor slip is 6%. (i) What is the rotor speed and rotor electrical frequency under the rated conditions; (ii) Calculate the stator input current, power factor, and electromagnetic torque under these conditions; (iii) The machine is running at rated conditions and it is to be stopped by switching the two stator leads....
5.7) An induction motor is installed in a factory. Under conditions in which the three-phase 415-volt...
5.7) An induction motor is installed in a factory. Under conditions in which the three-phase 415-volt 50-Hz supply is perfectly balanced, the motor runs at 1492 rpm. A single-phase load is then energised elsewhere in the factory, which has the effect of reducing the supply voltage on phase "6" by 5% without changing its phase angle. It may be assumed that the motor's speed remains unchanged, and that the motor supply has no neutral conductor. The motor equivalent circuit parameters...
The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor (HELP)
Question: The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor are given below. 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 same time driving the rotor in the same direction as the rotating field, at synchronous speed; s=0.R1 = 0.1, X1 = 0.5, RI2 = 0.1, XI2 = 0.5, Xm = 20, Rm = 100...
5 Marks) A 4-pole, 3 phase, 50 Hz, 230 V induction motor. Each phase of rotor winding b) has one-fourth the number of t...
5 Marks) A 4-pole, 3 phase, 50 Hz, 230 V induction motor. Each phase of rotor winding b) has one-fourth the number of turns of each stator. The full-load speed is 1,455 rpm. The rotor resistance is 0.3 Ω and rotor standstill reactance is 1.0 Ω per phase. The rotor and stator windings are similar. Stator losses are equal to 50 Watts. Friction and windage losses are equal to 30 W. Calculate ) Blocked rotor voltage per phase. 2 Marks)...
Please use exact methods and not approximations! 7.15. A three-phase, 460 V, 60 Hz, 1760 rpm, wound-rotor induction mot...
Please use exact methods and not approximations!
7.15. A three-phase, 460 V, 60 Hz, 1760 rpm, wound-rotor induction motor has the following equivalent circuit parameters Ri=0.25 ohm : R'= 0.2 ohm : Xi = 1.2 ohm : X2,= 1.1 ohm : 'Ku = 35 ohm The motor is connected to a 3ph, 460V, 60Hz supply and is star-connected. Use the simplified equivalent circuit. Initially the external rotor resistance is set to zero. (a) Calculate the speed (in rpm) at which...
d) A 440V, 50 Hz, 4-pole, 3 phase induction motor has a total leakage impedance of (0.3 +j5.5+0.25/s) ohm (delta phase)...
d) A 440V, 50 Hz, 4-pole, 3 phase induction motor has a total leakage impedance of (0.3 +j5.5+0.25/s) ohm (delta phase). Determine the external resistance to be inserted in each phase of the rotor winding such that the motor produce a gross torque of 130 N-m at a speed of 1300 rpm. (10 Marks)
d) A 440V, 50 Hz, 4-pole, 3 phase induction motor has a total leakage impedance of (0.3 +j5.5+0.25/s) ohm (delta phase). Determine the external resistance to...
please provide full solution for 3b and 3c ii）
3b) Induction Machine Analysis (9 marks ] A 415 V, 50 Hz, 1420 rpm, three-phase, star-connected induction machine has the following equivalent-circuit parameters (referred to the stator winding where appropriate): stator resistance R -0.52, rotor resistance R'-0.622 stator leakage reactance X1 = 1.2.2, rotor leakage reactance X' = 1.30 magnetising reactance XM-802, core loss resistance Re - 2400 In your calculations you should use the simplified equivalent circuit. i) The machine...
4. A three-phase induction motor has the following data: Nominal power, P 7.5 kW Nominal voltage, = 400 V Connection: Y Nominal frequency, f-50 Hz Nominal speed, nn 960 rpm Stator resistance, r, 0.55 Ω Rotor resistance referred to a stator winding phase: r:-0.51 Ω Stator leakage inductance, L,-4.4 mH Rotor leakage inductance referred to a stator winding phase,1'-4.4 mH Magnetising inductance L-65 mH How many pole pairs has the motor? 12] a. Calculate the nominal power factor of the...
5.7) An induction motor is installed in a factory. Under conditions in which the three-phase 415-volt 50-Hz supply is perfectly balanced, the motor runs at 1492 rpm. A single-phase load is then energised elsewhere in the factory, which has the effect of reducing the supply voltage on phase "6" by 5% without changing its phase angle. It may be assumed that the motor's speed remains unchanged, and that the motor supply has no neutral conductor. The motor equivalent circuit parameters...
5 Marks) A 4-pole, 3 phase, 50 Hz, 230 V induction motor. Each phase of rotor winding b) has one-fourth the number of turns of each stator. The full-load speed is 1,455 rpm. The rotor resistance is 0.3 Ω and rotor standstill reactance is 1.0 Ω per phase. The rotor and stator windings are similar. Stator losses are equal to 50 Watts. Friction and windage losses are equal to 30 W. Calculate ) Blocked rotor voltage per phase. 2 Marks)...
Please use exact methods and not approximations!
7.15. A three-phase, 460 V, 60 Hz, 1760 rpm, wound-rotor induction motor has the following equivalent circuit parameters Ri=0.25 ohm : R'= 0.2 ohm : Xi = 1.2 ohm : X2,= 1.1 ohm : 'Ku = 35 ohm The motor is connected to a 3ph, 460V, 60Hz supply and is star-connected. Use the simplified equivalent circuit. Initially the external rotor resistance is set to zero. (a) Calculate the speed (in rpm) at which...
d) A 440V, 50 Hz, 4-pole, 3 phase induction motor has a total leakage impedance of (0.3 +j5.5+0.25/s) ohm (delta phase). Determine the external resistance to be inserted in each phase of the rotor winding such that the motor produce a gross torque of 130 N-m at a speed of 1300 rpm. (10 Marks)
d) A 440V, 50 Hz, 4-pole, 3 phase induction motor has a total leakage impedance of (0.3 +j5.5+0.25/s) ohm (delta phase). Determine the external resistance to...
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