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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...
6. The speed of a 150 HP, 650 V, 1750 rpm, separately excited DC motor is...
6. The speed of a 150 HP, 650 V, 1750 rpm, separately excited DC motor is controlled by a 3- phase full converter. The converter is operating from 3-phase, 460 V, 50 Hz supply. The rated armature current of the motor is 170 A. The motor parameters are Ra = 0.099 2, La = 0.73 mH, and K.D=0.33 V/rpm. Neglect the losses in converter system. Determine i. No-load speed at firing angles a = 0º and a = 30°. Assume...
solve it now please A 220 V, 1000 rpm, separately excited dc motor is fed from...
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A 220 V, 1000 rpm, separately excited dc motor is fed from a three-phase controlled three-phase ac-dc converter through 220 V (line value-rms value), 50 Hz ac-source. It is required to apply 220 V (dc-value) across the motor terminals. What is the firing angle if the motor speed is 1000 rpm and takes 10 A ripple-free current. The armature resistance is 1 ohm. The field circuit with 198 ohms is fed from a fully controlled single-phase...
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...
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...
(i) A 220 volts, 825 rpm, 125 A separately excited DC motor has an armature resistance...
(i) A 220 volts, 825 rpm, 125 A separately excited DC motor has an armature resistance of 0.05 2. It is fed from a single phase fully controlled rectifier with an ac source of 225 Volts, 50Hz. Assuming continuous conduction calculate (a) Firing angle for 1/4"hrated motor torque and 750 rpm (b) Motor speed for a=160 degrees and rated torque 5 Marks (ii) Draw and explain with neat circuit diagram of a DC drive circuit, which works with positive output...
A power electronic converter used to drive a separately-excited DC motor for application in Sohar, Oman...
A power electronic converter used to drive a separately-excited DC motor for application in Sohar, Oman as shown in Figure Q2. Let R = 0.25 , K = 0.62 V/rpm.Wb, (flux per pole) = 175 mWb. The used converter is a single-phase, controlled full-wave bridge rectifier. Assume the firing angle is 45°, and the average speed is 1300 rpm and torque constant K is 9.55 of K. Assuming the motor current is continuous; calculate the armature current drawn by the...
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...
A 100 kW, 500 V, 2000 r.p.m separately excited d.c. motor is energized from a 400...
A 100 kW, 500 V, 2000 r.p.m separately excited d.c. motor is energized from a 400 V, 50 Hz, three phase source through a three phase full converter. The voltage drop in conducting thyristors is 2 V. The d.c. motor armature resistance is 0.1 Ω, motor constant is 1.6 V-s/rad, rated armature current is 210 A and no-load armature current is 10% of rated current. Determine the following: i) Motor terminal voltage at a firing angle of 30 ii) No...
Open Book Exam A 220 V, 1000 V dc-sourc rpm, separately dc motor is fed from a dc-dc converter th...
Open Book Exam A 220 V, 1000 V dc-sourc rpm, separately dc motor is fed from a dc-dc converter through 550 e with duty cycle 40 %. The motor speed is 1000 rpm when takes ripple free and armature resistance is 1 Ω. The motor constant is 6/π V/A-rad/s. The field circuit with 198 Ω is fed from a controlled single-phase rectifier and set to the maximum possible value. The ac source for field circuit is 220 V, 50 Hz....
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...
6. The speed of a 150 HP, 650 V, 1750 rpm, separately excited DC motor is controlled by a 3- phase full converter. The converter is operating from 3-phase, 460 V, 50 Hz supply. The rated armature current of the motor is 170 A. The motor parameters are Ra = 0.099 2, La = 0.73 mH, and K.D=0.33 V/rpm. Neglect the losses in converter system. Determine i. No-load speed at firing angles a = 0º and a = 30°. Assume...
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A 220 V, 1000 rpm, separately excited dc motor is fed from a three-phase controlled three-phase ac-dc converter through 220 V (line value-rms value), 50 Hz ac-source. It is required to apply 220 V (dc-value) across the motor terminals. What is the firing angle if the motor speed is 1000 rpm and takes 10 A ripple-free current. The armature resistance is 1 ohm. The field circuit with 198 ohms is fed from a fully controlled single-phase...
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...
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...
(i) A 220 volts, 825 rpm, 125 A separately excited DC motor has an armature resistance of 0.05 2. It is fed from a single phase fully controlled rectifier with an ac source of 225 Volts, 50Hz. Assuming continuous conduction calculate (a) Firing angle for 1/4"hrated motor torque and 750 rpm (b) Motor speed for a=160 degrees and rated torque 5 Marks (ii) Draw and explain with neat circuit diagram of a DC drive circuit, which works with positive output...
A power electronic converter used to drive a separately-excited DC motor for application in Sohar, Oman as shown in Figure Q2. Let R = 0.25 , K = 0.62 V/rpm.Wb, (flux per pole) = 175 mWb. The used converter is a single-phase, controlled full-wave bridge rectifier. Assume the firing angle is 45°, and the average speed is 1300 rpm and torque constant K is 9.55 of K. Assuming the motor current is continuous; calculate the armature current drawn by the...
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...
Open Book Exam A 220 V, 1000 V dc-sourc rpm, separately dc motor is fed from a dc-dc converter through 550 e with duty cycle 40 %. The motor speed is 1000 rpm when takes ripple free and armature resistance is 1 Ω. The motor constant is 6/π V/A-rad/s. The field circuit with 198 Ω is fed from a controlled single-phase rectifier and set to the maximum possible value. The ac source for field circuit is 220 V, 50 Hz....
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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