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A three phase full-wave AC controller in Figure Q5(a) is supplied to a system with Y...
A separately excited dc motor is fed by a 3-phase, 6-pulse converter shown in figure Q5. The 3-phase line is a 500 V, 6...
A separately excited dc motor is fed by a 3-phase, 6-pulse converter shown in figure Q5. The 3-phase line is a 500 V, 60 Hz supply. At rated condition, the dc motor armature current is 15 A. The dc motor armature resistance is 0.15 Ω and the rated speed is 1700 rpm. If the delay angle of the converter is 36 °, calculate the following: 3-phase (2 0 line Figure Q5. (2 marks) Rated voltage of the motor a. b....
4. A 3-phase full-wave converter drive is feeding power to a 220 V, 20 A, 1000...
4. A 3-phase full-wave converter drive is feeding power to a 220 V, 20 A, 1000 rpm separately excited dc motor. The ac input to the converters are 415 V, 3-phase, 50 Hz, Y-connected supply system. The field is also controlled by a 3-phase full converter and is set to the maximum possible value. The armature resistance is 0.5 Q and the field resistance is 250 12. The motor voltage constant is 1.2 V/A rad/s. Assume continuous conduction and ripple...
A Δ-connected source supplies power to a Y-connected load in a three-phase balanced system. Given that...
A Δ-connected source supplies power to a Y-connected load in a three-phase balanced system. Given that the line impedance is (1 + j1) Ω per phase while the load impedance is (6 + j4) Ω per phase, find the magnitude of the line voltage at the load. Assume the source phase voltage Vab= 208 ∠0° V rms. The magnitude of the line voltage at the load is _______ Vrms.
A single-phase half-wave ac voltage controller feeds a load of R = 40 Ω with (maximum...
A single-phase half-wave ac voltage controller feeds a load of R = 40 Ω with (maximum voltage of 230V), 50 Hz. Firing angle of thyristor is 60°. Determine (a) rms value of output voltage (b) power delivered to load and input pf and (c) average input current. (a) The rms value of load voltage. And repeat the above for A single phase Full-wave ac voltage controller?
A purely inductive, balanced, Y-connected load having an inductance L per phase, is fed by the three-phase half-bridge inverter shown below in Figure Q5. The inverter is operated in the square-wave mo...
A purely inductive, balanced, Y-connected load having an
inductance L per phase, is fed by the three-phase half-bridge
inverter shown below in Figure Q5. The inverter is operated in the
square-wave mode (meaning that the pole voltages are square waves)
with a frequency fs.
A purely inductive, balanced, Y-connected load having an inductance L per phase, is fed biy the three-phase half-bridge inverter shown below in Figure Q5. The inverter is operated in the square-wave mode (meaning that the pole...
An AC-AC converter with a thyristor connected to a 250 V (phase-neutral) and 50 Hz source...
An AC-AC converter with a thyristor connected to a 250 V (phase-neutral) and 50 Hz source is Y-connected. It feeds a 3-phase resistor. Circuit losses are neglected. Load resistance is 10 Ω / phase, α trigger angle is ?/6rad. Accordingly a) Calculate the effective values of the output voltage, output current and output power of the converter. b) Find the total reactive and total harmonic powers for the α angle value you obtained. c) Calculate the phase shift angle, phase...
(a) Two three-phase, 400kV (rms), 50Hz, AC networks are connected together via a current-source HVDC link...
(a) Two three-phase, 400kV (rms), 50Hz, AC networks are connected together via a current-source HVDC link made up of a three-phase, 12-pulse full-wave thyristor rectifier and a three-phase, 12-pulse full-wave thyristor inverter. (i) Draw the circuit diagram for this system and explain, for the rectifier stage, how the firing delay angle may be used to control the average DC voltage. (ii) Explain the main advantages of HVDC transmission compared to AC transmission. (b) An H-Bridge converter is to be used...
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a ...
Please show how this transformers problem is done. Thanks!
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a balanced three-phase load (it doesn't matter whether the load is Y or Delta connected). The voltage and current of the source are: van (t) - 340 sin (377t + 0.5236) ia(t) 100sin (377t 0.87266) Calculate the following: (a) The rms phase voltage (Van, magnitude and phase). (b) The rms line-to-line voltage (Vab, magnitude and phase) (c) The...
A six-step three-phase inverter has a 480 Vdc source and an output frequency of 60 Hz....
A six-step three-phase inverter has a 480 Vdc source and an output frequency of 60 Hz. Consider a balanced Y-connected resistive load of 16 ohm per phase. Determine the instantaneous source current, the total load power, and the rms line-line (Vab) and the line-neutral (Van) load voltage.
3. A 3-phase full-wave converter drive is feeding power to a 220 V, 20 A, 1500...
3. A 3-phase full-wave converter drive is feeding power to a 220 V, 20 A, 1500 rpm separately excited DC motor. The ac input to the converters are 415 V, 3-phase, 50 Hz, Y-connected supply system, connected through a step-down transformer so that the armature terminal voltage equals to rated voltage when converter firing angle is 0°. The resistance of the armature winding is 0.5 12. Determine the firing angle, i. when the motor is running at 1000 rpm and...
A separately excited dc motor is fed by a 3-phase, 6-pulse converter shown in figure Q5. The 3-phase line is a 500 V, 60 Hz supply. At rated condition, the dc motor armature current is 15 A. The dc motor armature resistance is 0.15 Ω and the rated speed is 1700 rpm. If the delay angle of the converter is 36 °, calculate the following: 3-phase (2 0 line Figure Q5. (2 marks) Rated voltage of the motor a. b....
4. A 3-phase full-wave converter drive is feeding power to a 220 V, 20 A, 1000 rpm separately excited dc motor. The ac input to the converters are 415 V, 3-phase, 50 Hz, Y-connected supply system. The field is also controlled by a 3-phase full converter and is set to the maximum possible value. The armature resistance is 0.5 Q and the field resistance is 250 12. The motor voltage constant is 1.2 V/A rad/s. Assume continuous conduction and ripple...
A purely inductive, balanced, Y-connected load having an
inductance L per phase, is fed by the three-phase half-bridge
inverter shown below in Figure Q5. The inverter is operated in the
square-wave mode (meaning that the pole voltages are square waves)
with a frequency fs.
A purely inductive, balanced, Y-connected load having an inductance L per phase, is fed biy the three-phase half-bridge inverter shown below in Figure Q5. The inverter is operated in the square-wave mode (meaning that the pole...
Please show how this transformers problem is done. Thanks!
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a balanced three-phase load (it doesn't matter whether the load is Y or Delta connected). The voltage and current of the source are: van (t) - 340 sin (377t + 0.5236) ia(t) 100sin (377t 0.87266) Calculate the following: (a) The rms phase voltage (Van, magnitude and phase). (b) The rms line-to-line voltage (Vab, magnitude and phase) (c) The...
3. A 3-phase full-wave converter drive is feeding power to a 220 V, 20 A, 1500 rpm separately excited DC motor. The ac input to the converters are 415 V, 3-phase, 50 Hz, Y-connected supply system, connected through a step-down transformer so that the armature terminal voltage equals to rated voltage when converter firing angle is 0°. The resistance of the armature winding is 0.5 12. Determine the firing angle, i. when the motor is running at 1000 rpm and...
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