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4. Consider a stepper motor with two phases. Phase 1 is wound with two identical coils. Phase 2 i...
A 60-Hx, 2-pole, 208-V wound-rotor induction motor has a threc-phase stator winding of 42 serics turns/phase...
A 60-Hx, 2-pole, 208-V wound-rotor induction motor has a threc-phase stator winding of 42 serics turns/phase and a rotor winding of 38 series turns/phase. When operating at rated terminal voltage, the motor is observed to be operating at a speed of 3517 r/min. Caleulations indicate that under this opcrating condition, the air-gap fHlux wave induces a voltage of 193 V, line-lne in the stator winding. Calculate the corresponding voltage induced in the rotor winding
Draw an impedance diagram for the series connected coils with zero coupling. the values I have is: Impedance: 8.5 ohms Phase angle: 51.14 degrees Resistance: 5.84 ohms Reactance: 6.62 ohms Inductan...
Draw an impedance diagram for the series connected coils with
zero coupling.
the values I have is:
Impedance: 8.5 ohms
Phase angle: 51.14 degrees
Resistance: 5.84 ohms
Reactance: 6.62 ohms
Inductance: 0.02 Henrys
Circuit connections Connect the two air-cored coils in series as shown in figure 2, Yellow Yellow LO﹁ Terminal SOURCE Terminal Transformer 6 Volts A.C Wattmeter Mains Figure 2. - Impedance measurement of coils connected in series Measurement and calculations PLEASE SWITCH OFF THE TRANSFORMER AFTER YOU HAVE...
Prelab 1. In your lab notebook draw the schematic diagram for a three-phase wye-connected induction motor...
Prelab 1. In your lab notebook draw the schematic diagram for a three-phase wye-connected induction motor with its three-phase stator winding connected to the three-phase power supply through 25-Ω resistors. Connect two er analyzers in the circuit (between the 25-Ω resistors and the motor) to read the total power absorbed by the induction motor. What is the function of the resistors inserted in the circuit? 2. After reading this lab handout, draw the circuit diagram for the induction motor-synchronous generator...
A 3-phase, 600 kVA, 600 V, 60 Hz, 16 pole, Y-connected, round rotor synchronous motor has...
A 3-phase, 600 kVA, 600 V, 60 Hz, 16 pole, Y-connected, round rotor synchronous motor has Xs = 0.492 22 and a negligible armature resistance. The motor is supplied from a 589V infinity bus, and draws 520 kW of real power at a 0.9 leading power factor. Its mechanical loss at the synchronous speed is 20 kW and the core loss is 15 kW. a) [7 marks] Calculate the generated voltage Ef , the load angel 8, and the efficiency...
Consider a 50 kW, 3-phase, 380 V line-to-line, 50 Hz, 6 pole Y-connected wound-rotor induction motor....
Consider a 50 kW, 3-phase, 380 V line-to-line, 50 Hz, 6 pole Y-connected wound-rotor induction motor. The stator winding ac resistance is 0.1 Ω/phase. The effective stator-to-rotor turns ratio is 2. The exciting branch is negligible. It is found that when an external resistor of 0.09 Ω/phase is connected to the rotor terminals maximum starting torque of 1150 Nm is obtained. a. Compute the internal mechanical power and the internal torque developed by this motor when it drives a load...
Stator winding stator axis rotor axis ܕ݁ܐܶ RU in L rotor V.RO 0 0.= initial position...
Stator winding stator axis rotor axis ܕ݁ܐܶ RU in L rotor V.RO 0 0.= initial position of the rotor at standstill (rest position) a) Schematic view of SPPMSM b) Electrical equivalent circuit of SPPMSM Description of the motor: In Fig. a, cross-section of a Single Phase Permanent Magnet Synchronous Motor (SPPMSM) is seen. A U shaped stator is wound with a stator winding consisting of two coils connected in series (you can consider a single coil with N turns). A...
Show all steps Chapter 4, Problem 28P (1 Bookmark) ON Figure 4.41 shows in cross section a machine having a rotor winding f and two identical stator windings a and b whose axes are in quadrature. The...
Show all steps Chapter 4, Problem 28P (1 Bookmark) ON Figure 4.41 shows in cross section a machine having a rotor winding f and two identical stator windings a and b whose axes are in quadrature. The self-inductance of each stator winding is Laa and of the rotor is Lff. The air gap is uniform. The mutual inductance between a stator winding depends on the angular position of the rotor and may be assumed to be of the form where...
Two tests were performed on a 230-V, 60-Hz, 4-pole, Y-connected, three-phase induction motor and the obtained...
Two tests were performed on a 230-V, 60-Hz, 4-pole, Y-connected, three-phase induction motor and the obtained data are given in the table below. The friction and windage loss is 15 W, and the stator winding resistance between any two lines is 3.96ohm Determine: 1) The equivalent circuit parameters of the motor 3) The motor efficiency at a slip of 8%. No-load test 137 0.43 230 Blocked-rotor test 70 1.18 47 3-phase power input, W Line-line voltage, V
Consider three identical resistors of resistance R. You are performing two experiments: 1: You connect two...
Consider three identical resistors of resistance R. You are performing two experiments: 1: You connect two resistors in parallel and the third one in series to parallel combination. 2. You connect two resistors in series and the third one in parallel to series combination. We can predict that equivalent resistance of circuit #1 is greater than resistance of circuit 2 less than resistance of circuit 2 same as resistance of circuit 2 Impossible to predict anything without knowing particular value...
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...
A 60-Hx, 2-pole, 208-V wound-rotor induction motor has a threc-phase stator winding of 42 serics turns/phase and a rotor winding of 38 series turns/phase. When operating at rated terminal voltage, the motor is observed to be operating at a speed of 3517 r/min. Caleulations indicate that under this opcrating condition, the air-gap fHlux wave induces a voltage of 193 V, line-lne in the stator winding. Calculate the corresponding voltage induced in the rotor winding
Draw an impedance diagram for the series connected coils with
zero coupling.
the values I have is:
Impedance: 8.5 ohms
Phase angle: 51.14 degrees
Resistance: 5.84 ohms
Reactance: 6.62 ohms
Inductance: 0.02 Henrys
Circuit connections Connect the two air-cored coils in series as shown in figure 2, Yellow Yellow LO﹁ Terminal SOURCE Terminal Transformer 6 Volts A.C Wattmeter Mains Figure 2. - Impedance measurement of coils connected in series Measurement and calculations PLEASE SWITCH OFF THE TRANSFORMER AFTER YOU HAVE...
Prelab 1. In your lab notebook draw the schematic diagram for a three-phase wye-connected induction motor with its three-phase stator winding connected to the three-phase power supply through 25-Ω resistors. Connect two er analyzers in the circuit (between the 25-Ω resistors and the motor) to read the total power absorbed by the induction motor. What is the function of the resistors inserted in the circuit? 2. After reading this lab handout, draw the circuit diagram for the induction motor-synchronous generator...
A 3-phase, 600 kVA, 600 V, 60 Hz, 16 pole, Y-connected, round rotor synchronous motor has Xs = 0.492 22 and a negligible armature resistance. The motor is supplied from a 589V infinity bus, and draws 520 kW of real power at a 0.9 leading power factor. Its mechanical loss at the synchronous speed is 20 kW and the core loss is 15 kW. a) [7 marks] Calculate the generated voltage Ef , the load angel 8, and the efficiency...
Stator winding stator axis rotor axis ܕ݁ܐܶ RU in L rotor V.RO 0 0.= initial position of the rotor at standstill (rest position) a) Schematic view of SPPMSM b) Electrical equivalent circuit of SPPMSM Description of the motor: In Fig. a, cross-section of a Single Phase Permanent Magnet Synchronous Motor (SPPMSM) is seen. A U shaped stator is wound with a stator winding consisting of two coils connected in series (you can consider a single coil with N turns). A...
Show all steps Chapter 4, Problem 28P (1 Bookmark) ON Figure 4.41 shows in cross section a machine having a rotor winding f and two identical stator windings a and b whose axes are in quadrature. The self-inductance of each stator winding is Laa and of the rotor is Lff. The air gap is uniform. The mutual inductance between a stator winding depends on the angular position of the rotor and may be assumed to be of the form where...
Two tests were performed on a 230-V, 60-Hz, 4-pole, Y-connected, three-phase induction motor and the obtained data are given in the table below. The friction and windage loss is 15 W, and the stator winding resistance between any two lines is 3.96ohm Determine: 1) The equivalent circuit parameters of the motor 3) The motor efficiency at a slip of 8%. No-load test 137 0.43 230 Blocked-rotor test 70 1.18 47 3-phase power input, W Line-line voltage, V
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...
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