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The induction motor has the following parameters: jcoeLir w1= 1800 rpm 1300 1600 1400 2 R1...
A 3-phase, 460 V, 1740 rpm, 60 Hz, 4-pole wound-rotor induction motor has the following parameters...
A 3-phase, 460 V, 1740 rpm, 60 Hz, 4-pole wound-rotor induction motor has the following parameters per phase: R1 = 0.25 Ω, ' 2R = 0.2Ω, ' 1 2 X = X = 0.5Ω, 30 m X = Ω. The rotational losses are 1700 W. With the rotor terminals short-circuited, find: 1. at starting: • current when started direct on full voltage, • a torque 2. at full load: • slip • current • ratio of starting current to full-load...
P1. The motor to be studied in this lab is a 4-pole, three-phase, 60-Hz, 208-V machine...
P1. The motor to be studied in this lab is a 4-pole, three-phase, 60-Hz, 208-V machine whose parameters are Rs = 12 2. Rr=18 12, Xm= 160 S2 and Xi = 22 2 (all referred to the stator side of the machine). Using the equations given on the last page of this instruction manual, complete Table P1. Note that we have labeled the calculated developed torque here as “theoretical) Also, for this motor calculate the maximum torque, shaft speed at...
4. A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating...
4. A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load conditions. At full-load conditions, the friction and windage losses are 700 W, and the core losses are 600 W. Find the following values for full-load conditions: (10 pts.) (a) The shaft speed in rpm (b) The output power in horse power (c) The load torque in lb-ft (d) The induced torque in lb-ft (e) The rotor frequency in hertz
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...
3ELEC 3600. Problem H8 3-phase Wound Rotor Induction Motor This sheet is page 1. Number all...
3ELEC 3600. Problem H8 3-phase Wound Rotor Induction Motor This sheet is page 1. Number all pages. Consider the following induction machine THREE-PHASE INDUCTION MOTOR DATA* Ratings Line Voltage 2400 V; 72.17 A; Horsepower-300 hp stator frequency60 Hz Design W Poles -4; **Equivalent Circuit Values (in stator ohms Rated Freq)** R1 0.30000 R2'- 0.47159 X2'-1.73000; Jm2.5000 kg-m sq Thevenin Equivalent Circuit Values: RT-0.28524; slip, speed for max Torque0.1375; Rotational Loss Torque-TRL 0.18689 x (speed in rad/s) Nm X1 -1.73000 Xm67.740...
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 three-phase, six-pole 440 V, 60 Hz induction motor has the following per-phase equivalent circuit parameters...
A three-phase, six-pole 440 V, 60 Hz induction motor has the following per-phase equivalent circuit parameters referred to the stator: R1 = negligible, R’2 =0.3 Ω, Rφ = infinite, X1 = 1.131 Ω, X’2 = 1.131 Ω and Xφ = 37.7 Ω. Rotational losses are negligible. Assume the stator is connected to a 440 V, 60 Hz source and use the 6-parameters IEEE model. a) Determine the motor starting torque. (5 points) b) Calculate the motor breakdown torque. (5 points)...
A 460V, 50Hz, 7.5kW, four-pole, Y-connected induction motor has the following parameters: R1 = 0.540 R2...
A 460V, 50Hz, 7.5kW, four-pole, Y-connected induction motor has the following parameters: R1 = 0.540 R2 = 0.4880 XM = 51.120 X1 = 2.0930 X2 = 3.2090 PE+W = 150W Pmisc = 50W Pcore = 150W For a slip of 0.03, find a. [5 marks] The line current IL b. [3 marks] The stator power factor c. [3 marks] The frequency of the rotor currents d. [4 marks] The power converted from electrical to mechanical form Pconv e. [5 marks]...
A three-phase induction motor has 6 poles and the following Y-connected per phase equivalent circuit parameters:...
A three-phase induction motor has 6 poles and the following Y-connected per phase equivalent circuit parameters: R1 = 3.5Ω, X1 = 5.2Ω, R2 = 3.1Ω, X2 = 5.5Ω, RC = 2200Ω,XM = 1350Ω. The rotational and stray losses are negligible. The motor is connected to a 3300 V, 50 Hz, three-phase source. The motor’s rated speed is 965rpm. Answer the following questions when it is operating at rated speed; Question 11 Find the motor’s slip. 0.028 0.014 0.035 0.053 0.046...
P1. The motor to be studied in this lab is a 4-pole, three-phase, 60-Hz, 208-V machine whose parameters are Rs = 12 2. Rr=18 12, Xm= 160 S2 and Xi = 22 2 (all referred to the stator side of the machine). Using the equations given on the last page of this instruction manual, complete Table P1. Note that we have labeled the calculated developed torque here as “theoretical) Also, for this motor calculate the maximum torque, shaft speed at...
4. A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load conditions. At full-load conditions, the friction and windage losses are 700 W, and the core losses are 600 W. Find the following values for full-load conditions: (10 pts.) (a) The shaft speed in rpm (b) The output power in horse power (c) The load torque in lb-ft (d) The induced torque in lb-ft (e) The rotor frequency in hertz
3ELEC 3600. Problem H8 3-phase Wound Rotor Induction Motor This sheet is page 1. Number all pages. Consider the following induction machine THREE-PHASE INDUCTION MOTOR DATA* Ratings Line Voltage 2400 V; 72.17 A; Horsepower-300 hp stator frequency60 Hz Design W Poles -4; **Equivalent Circuit Values (in stator ohms Rated Freq)** R1 0.30000 R2'- 0.47159 X2'-1.73000; Jm2.5000 kg-m sq Thevenin Equivalent Circuit Values: RT-0.28524; slip, speed for max Torque0.1375; Rotational Loss Torque-TRL 0.18689 x (speed in rad/s) Nm X1 -1.73000 Xm67.740...
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 460V, 50Hz, 7.5kW, four-pole, Y-connected induction motor has the following parameters: R1 = 0.540 R2 = 0.4880 XM = 51.120 X1 = 2.0930 X2 = 3.2090 PE+W = 150W Pmisc = 50W Pcore = 150W For a slip of 0.03, find a. [5 marks] The line current IL b. [3 marks] The stator power factor c. [3 marks] The frequency of the rotor currents d. [4 marks] The power converted from electrical to mechanical form Pconv e. [5 marks]...
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