Determine the number of stator conductors per slot for a three-phase 50 Hz alternator if the...
Determine the number of stator conductors per slot for a three-phase 50 Hz alternator if the winding is star connected and generates a line voltage of 44kV at 1 500 r/min during open circuit. Take the flux per pole as 0,3 Wb and the distribution factor as 0,96. The coils are full pitched and the stator has 4 slot per pole per phase.
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Determine the number of stator conductors per slot for a
three-phase 50 Hz alternator if the...
A 400 v, 50 Hz, three phase alternator, rated at 75 kVA, is star connected and...
A 400 v, 50 Hz, three phase alternator, rated at 75 kVA, is star connected and driven at 1000 r/min. The windings of the alternator have a resistance, per phase, of 0.03 Ω and synchronous reactance, at 50 Hz per phase, of j0.325 Ω. The stator of the alternator has 108 slots, with 8 conductors, per slots, in a double layer. The maximum pole flux is 8.772 x 10-3 Wb. To improve the wave form only 80% of the pole...
A 3-phase, 12-pole, star-connected alternator has 24 slots with 43 conductors per slot. The coil-span is...
A 3-phase, 12-pole, star-connected alternator has 24 slots with 43 conductors per slot. The coil-span is 7 slots. Find the phase and line induced EMFs if the flux per pole is 0.064 weber and the machine runs at 720 RPM
A 3-phase, 60 Hz, 6 pole alternator has an air gap flux that is sinusoidally distributed....
A 3-phase, 60 Hz, 6 pole alternator has an air gap flux that is sinusoidally distributed. The stator has 5 slots per pole per phase and each slot contains 4 conductors arranged in two layers. The coil pitch is 12 slots. With normal excitation and rated speed, the voltage induced per conductor is 25 volts. What is the open-circuit emf between the terminals when this machine is wye-connected and all the conductors per phase are connected in series?
A 3-phase, 60 Hz, 6 pole alternator has an air gap flux that is sinusoidally distributed....
A 3-phase, 60 Hz, 6 pole alternator has an air gap flux that is sinusoidally distributed. The stator has 5 slots per pole per phase and each slot contains 4 conductors arranged in two layers. The coil pitch is 12 slots. With normal excitation and rated speed, the voltage induced per conductor is 25 volts. What is the open-circuit emf between the terminals when this machine is wye-connected and all the conductors per phase are connected in series?
Q1 Consider a 24 slot machine. This machine is designed to have 4-poles a) If the...
Q1 Consider a 24 slot machine. This machine is designed to have 4-poles a) If the phase winding 5/6 pitched, draw winding diagram of phase A. b) What is the mechanical angle between the poles of a phase? c) What is the electrical angle between the poles of a phase? d) Calculate the number of coils per phase. e) Each coil has 10 turns. What is the number of turns per phase? f) The phase A current is 5 A....
You are tasked with designing the stator winding distribution of a three-phase, 60 Hz induction motor, whose rated speed will be 900 rpm. You will have only 36 equidistant stator slots at your disposal to place in conductors.
You are tasked with designing the stator winding distribution of a three-phase, 60 Hz induction motor, whose rated speed will be 900 rpm. You will have only 36 equidistant stator slots at your disposal to place in conductors.(a) Determine and sketch on separate axes the winding distribution of phases a, b and c. Adopt a conductor placement approach that will minimize thegeneration of higher-order harmonics in the rotating magnetic flux wave. Assume you have 132 turns to distribute per phase.(b) Sketch on separate axes the air gap H-field...
hot answere A 3-phase, 10kvA, 400 Vrms (line-to-line), 50 Hz synchronous gené rator has negligible stator...
hot answere A 3-phase, 10kvA, 400 Vrms (line-to-line), 50 Hz synchronous gené rator has negligible stator Winding resistane and and a synchronous inductance of 10mit per phase. Determine the power angle and the excitation voltage requined to achieve a unity power bactor. Hot answered ERVICES - → Two Coils are wound on a toroidal Cove as shown below. The core a has a square cross section. The coil Currents are i, = 0.25 A robin N = 500 turns 3...
Question 2 [10 marks) A six pole, three phase induction motor, with a star connected stator...
Question 2 [10 marks) A six pole, three phase induction motor, with a star connected stator winding is energised from a 380V, 50Hz supply. The ratio of the stator to rotor turns is assumed 1.8 and a full load slip of 4%. If the respective per phase rotor resistance and standstill reactance are 0.120 and 0.8502, determine: a. Torque developed at full load b. The maximum torque and the speed at maximum torque
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...
A 230 V, 50 Hz, three-phase, Y-connected, 6-pole induction motor has the following per-phase parameters R-0.07...
A 230 V, 50 Hz, three-phase, Y-connected, 6-pole induction motor has the following per-phase parameters R-0.07 Ro 00 0.08 Ω x, x, 0.3 xm 6.33 At a slip of 2%, determine the followings using approximate equivalent circuit of the motor i) The motor speed in rev/min and rad/s. ii) The rotor current. ii) The stator current. iv) The induced torque. v) The efficiency of the motor.
A 3-phase, 12-pole, star-connected alternator has 24 slots with 43 conductors per slot. The coil-span is 7 slots. Find the phase and line induced EMFs if the flux per pole is 0.064 weber and the machine runs at 720 RPM
hot answere A 3-phase, 10kvA, 400 Vrms (line-to-line), 50 Hz synchronous gené rator has negligible stator Winding resistane and and a synchronous inductance of 10mit per phase. Determine the power angle and the excitation voltage requined to achieve a unity power bactor. Hot answered ERVICES - → Two Coils are wound on a toroidal Cove as shown below. The core a has a square cross section. The coil Currents are i, = 0.25 A robin N = 500 turns 3...
Question 2 [10 marks) A six pole, three phase induction motor, with a star connected stator winding is energised from a 380V, 50Hz supply. The ratio of the stator to rotor turns is assumed 1.8 and a full load slip of 4%. If the respective per phase rotor resistance and standstill reactance are 0.120 and 0.8502, determine: a. Torque developed at full load b. The maximum torque and the speed at maximum torque
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...
A 230 V, 50 Hz, three-phase, Y-connected, 6-pole induction motor has the following per-phase parameters R-0.07 Ro 00 0.08 Ω x, x, 0.3 xm 6.33 At a slip of 2%, determine the followings using approximate equivalent circuit of the motor i) The motor speed in rev/min and rad/s. ii) The rotor current. ii) The stator current. iv) The induced torque. v) The efficiency of the motor.
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