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A 220 V, 1000 rpm, separately excited dc motor is fed from...
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....
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...
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) 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...
please solve this problem with detail explainations. Thanks Problem # 1 If the available power source is a three-phase, 60 Hz, ac supply and a separately excited DC motor is to be fed from this sourc...
please solve this problem with detail explainations. Thanks
Problem # 1 If the available power source is a three-phase, 60 Hz, ac supply and a separately excited DC motor is to be fed from this source, configure possible drive circuits for iOne-Quadrant Operation, i) Two-Quadrant Operation ) Four- Quadrant Operation Hints: (See below for the single phase diagram) For one-quadrant operation, the motor control circuit is a half-wave controlled rectifier or a se controlled converter and the driver for the...
A 230 V, 1000 rpm, 30 A separately excited motor has armature resistance and inductance of...
A 230 V, 1000 rpm, 30 A separately excited motor has armature resistance and inductance of 0.7 Ω and 50 mH respectively. Motor is controlled in regenerative braking by a chopper operating at 800 Hz from a dc source of 230 V. Assuming continuous conduction a) Calculate duty ratio of chopper for rated torque and the speed of 800 rpm. b) What will be the motor speed for duty ratio of 0.6 and rated motor torque? c) What will be...
As shown in the following figure, the speed of a 12 kW, 220 V, 1000 rpm...
As shown in the following figure, the speed of a 12 kW, 220 V, 1000 rpm dc series motor is controlled using a single-phase full-wave half-controlled bridge converter (similar to that of Figure 3.48, page 102 of the textbook). The combined armature and field resistance is 0.2 S2. The supply voltage is 250 V (rms), 60 Hz. Assuming the motor is operating in the linear region of its magnetization curve (that is flux versus mmf curve) with constant KC 0.03...
3) A saperately excited DC motor has the following parameters: Ra = 10 Ke = 0.4...
3) A saperately excited DC motor has the following parameters: Ra = 10 Ke = 0.4 V/rpm. Wb O = 0.2 Wb The motor speed is controlled by a full-wave bridge rectifier. The firing angle is set at 45, and the average speed is 1500 rpm. The applied AC voltage to the input of the bridge rectifier is 220Vrms - 50 Hz. a) (10p) Please draw the complete circuit. (converter + motor) b) (10p) Please find the armature current. c)...
3) A saperately excited DC motor has the following parameters: Ra = 10 Ke = 0.4...
3) A saperately excited DC motor has the following parameters: Ra = 10 Ke = 0.4 V/rpm. Wb 0 = 0.2 Wb The motor speed is controlled by a full-wave bridge rectifier. The firing angle is set at 45°, and the average speed is 1500 rpm. The applied AC voltage to the input of the bridge rectifier is 220Vrms - 50 Hz. a) (10p) Please draw the complete circuit. (converter + motor) b) (10p) Please find the armature current. c)...
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....
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....
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...
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) 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...
please solve this problem with detail explainations. Thanks
Problem # 1 If the available power source is a three-phase, 60 Hz, ac supply and a separately excited DC motor is to be fed from this source, configure possible drive circuits for iOne-Quadrant Operation, i) Two-Quadrant Operation ) Four- Quadrant Operation Hints: (See below for the single phase diagram) For one-quadrant operation, the motor control circuit is a half-wave controlled rectifier or a se controlled converter and the driver for the...
As shown in the following figure, the speed of a 12 kW, 220 V, 1000 rpm dc series motor is controlled using a single-phase full-wave half-controlled bridge converter (similar to that of Figure 3.48, page 102 of the textbook). The combined armature and field resistance is 0.2 S2. The supply voltage is 250 V (rms), 60 Hz. Assuming the motor is operating in the linear region of its magnetization curve (that is flux versus mmf curve) with constant KC 0.03...
3) A saperately excited DC motor has the following parameters: Ra = 10 Ke = 0.4 V/rpm. Wb O = 0.2 Wb The motor speed is controlled by a full-wave bridge rectifier. The firing angle is set at 45, and the average speed is 1500 rpm. The applied AC voltage to the input of the bridge rectifier is 220Vrms - 50 Hz. a) (10p) Please draw the complete circuit. (converter + motor) b) (10p) Please find the armature current. c)...
3) A saperately excited DC motor has the following parameters: Ra = 10 Ke = 0.4 V/rpm. Wb 0 = 0.2 Wb The motor speed is controlled by a full-wave bridge rectifier. The firing angle is set at 45°, and the average speed is 1500 rpm. The applied AC voltage to the input of the bridge rectifier is 220Vrms - 50 Hz. a) (10p) Please draw the complete circuit. (converter + motor) b) (10p) Please find the armature current. c)...
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....
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