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determine the gain of the linearized controller
For a three-phase controlled converter, if the maximum control...
Fill in the blank(s) with the appropriate word(s) The three phase fully controlled bridge converter is...
Fill in the blank(s) with the appropriate word(s) The three phase fully controlled bridge converter is obtained by replacing six _________ of an uncontrolled converter by six __________. Version 2 EE IIT, Kharagpur 7 The pulse number of a three phase fully controlled bridge converter is _________. In a three phase fully controlled converter each device conducts for an interval of __________ degrees. iv) In a three phase fully controlled converter operating in continuous conduction there are ________ different conduction...
A three phase full-wave AC controller in Figure Q5(a) is supplied to a system with Y...
A three phase full-wave AC controller in Figure Q5(a) is supplied to a system with Y connected load system. The load consists of R = 100 and L = 0.01 mH which are connected in series between them. The line-to-line input voltage is given as 208 V with 50 Hz and the delay angle is given as a = 271/3. (1) Calculate the rms value of output phase voltage. (3 marks) (ii) Determine the power factor at output based on...
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?
8) A three-phase thyristor controlled converter is used to drive a motor system. What is the...
8) A three-phase thyristor controlled converter is used to drive a motor system. What is the required trigger delay angle a if the required average output DC voltage is 0.5Vm [2 points) a) 90 degrees. b) 45 degrees. c) 58.43 degrees. d) O degrees. 9) A 3-point motor starter arrangement is shown in the diagram below (1 point). Starting Resistence No volt col OFF Soft ron piece Starter handie Spring Over load release Lever Trangular iron Three Point Starter As...
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...
The speed of a separately excited de motor is controlled by a one-phase full-wave converter. The field circuit is also controlled by a full-wave converter and the field current is set to its maximum...
The speed of a separately excited de motor is controlled by a one-phase full-wave converter. The field circuit is also controlled by a full-wave converter and the field current is set to its maximum value. The AC supply voltage to the armature and field converters is one-phase, 400V, 50Hz. The armature resistance Ra 0.232, the field circuit resistance Rf- 1812, and the motor voltage constant is Kv 1.3V/A - rad/s. The armature current corresponding to the load demand Ia 42A...
esign three phase AC/DC converter with the following parameters - Vin (Line-Line) = 400 rms - Frequency = 50 Hz - Vout = 0 to 450V Simulate the converter under the following conditions 1- The load is...
esign three phase AC/DC converter with the following parameters - Vin (Line-Line) = 400 rms - Frequency = 50 Hz - Vout = 0 to 450V Simulate the converter under the following conditions 1- The load is Resistive, with 20Ω. Study the operation of the converter in term of: o Output voltage o Output current o Thyristor voltage and current o Relation of output voltage with firing angle alpha o Input and output harmonic spectrum.
(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...
Consider a three-phase thyristor-based AC-DC converter supplying a “superconductive inductance” of 10 H and 200 A....
Consider a three-phase thyristor-based AC-DC converter supplying a “superconductive inductance” of 10 H and 200 A. The grid voltage is 400VLL/60Hz. A) What is the shortest time to fully charge the Inductor, from “zero energy condition?” What value of firing angle of the thyristors (α) should be used in this case? B) When the inductor is fully charged, what value of α should be used to keep it at “stand-by”? How much reactive power does the AC-DC converter absorb from...
i. The speed of a separately excited dc motor is controlled by a one-phase full-wave converter. The field circuit is also controlled by a full-wave converter, see V supply) Vs pk-150V Ra-0.310 L Rf 1...
i. The speed of a separately excited dc motor is controlled by a one-phase full-wave converter. The field circuit is also controlled by a full-wave converter, see V supply) Vs pk-150V Ra-0.310 L Rf 152O E-63V α. 1-35A Figure 3 The AC supply voltage to the armature and field converters is one-phase, 150Vpeak, 50Hz. The armature resistance Ra-0.31Ω, the field circuit resistance Rf-152Ω, and the motor voltage constant is Kv-1.3V/A. The armature current corresponding to the load demand la-35A The...
A three phase full-wave AC controller in Figure Q5(a) is supplied to a system with Y connected load system. The load consists of R = 100 and L = 0.01 mH which are connected in series between them. The line-to-line input voltage is given as 208 V with 50 Hz and the delay angle is given as a = 271/3. (1) Calculate the rms value of output phase voltage. (3 marks) (ii) Determine the power factor at output based on...
8) A three-phase thyristor controlled converter is used to drive a motor system. What is the required trigger delay angle a if the required average output DC voltage is 0.5Vm [2 points) a) 90 degrees. b) 45 degrees. c) 58.43 degrees. d) O degrees. 9) A 3-point motor starter arrangement is shown in the diagram below (1 point). Starting Resistence No volt col OFF Soft ron piece Starter handie Spring Over load release Lever Trangular iron Three Point Starter As...
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...
The speed of a separately excited de motor is controlled by a one-phase full-wave converter. The field circuit is also controlled by a full-wave converter and the field current is set to its maximum value. The AC supply voltage to the armature and field converters is one-phase, 400V, 50Hz. The armature resistance Ra 0.232, the field circuit resistance Rf- 1812, and the motor voltage constant is Kv 1.3V/A - rad/s. The armature current corresponding to the load demand Ia 42A...
i. The speed of a separately excited dc motor is controlled by a one-phase full-wave converter. The field circuit is also controlled by a full-wave converter, see V supply) Vs pk-150V Ra-0.310 L Rf 152O E-63V α. 1-35A Figure 3 The AC supply voltage to the armature and field converters is one-phase, 150Vpeak, 50Hz. The armature resistance Ra-0.31Ω, the field circuit resistance Rf-152Ω, and the motor voltage constant is Kv-1.3V/A. The armature current corresponding to the load demand la-35A The...
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