Electric Drives
A separately excited dc motor controlled by a 3 phase full wave full
controlled converter connected to the armature and field circuits. the ac
supply voltage is 208v and the frequency is 60 Hz. If the field current
adjusted to If =1 A and the armature resistance Ra = 0.2 Ω ,the field
resistance Rf = 250 Ω and the voltage constant K = 1.2V/A-rad/sec. The load
torque TL=120 Nm and The firing angle of the armeture circuit adjusted to
be αa=30. Consider armature inductance La is so large that the output
current Ia can be assumed to be continuous and ripple-free.
a. Draw the waveforms of the motor at firing angle α=30.
b. Determine the developed torque and the motor speed.
c. If the load is increased by 25% calculate the motor speed.
d. Determine the firing angle α to return the speed to its previous value
as in case (b).
Homework Answers
Request Answer!
We need at least 9 more requests to produce the answer.
1 / 10 have requested this problem solution
The more requests, the faster the answer.
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...
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...
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...
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...
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...
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...
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...
solve it now please A 220 V, 1000 rpm, separately excited dc motor is fed from...
solve it now
please
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...
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)...
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...
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...
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...
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...
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...
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...
solve it now
please
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...
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)...
Most questions answered within 3 hours.
-
Part 1. Primitive Types, Sorting, Recursion for
Homework.java
a) Implement the static method initializeArray that receives...
asked 39 minutes ago -
Using C++, build a sorter that can rank a sequence of numbers in
a descending order....
asked 35 minutes ago -
Derive ground state term symbols. Use notation 2S(1/2) for state
2S1/2
a) d5
b) f3
c)...
asked 59 minutes ago -
A sample of size 31 will be drawn from a population with mean 39
and standard...
asked 1 hour ago -
What is the effect on the P-value when a test is changed from a
two-tailed hypothesis...
asked 1 hour ago -
I wish to estimate µ, the mean of a population. After I collect
and an-
alyze...
asked 2 hours ago -
At a local university, you poll a group of 115 students and find
that 37 of...
asked 1 hour ago -
Gladstone company tracks the number of units purchased and sold
throughout each accounting period but applies...
asked 1 hour ago -
When determining if a molecule's configuration is E or Z, what
determines the higher priority groups?
asked 2 hours ago -
13. What is the amount
of conversion cost transferred to finished goods? (Round
your intermediate calculations...
asked 2 hours ago -
Sulfuric Acid is a "strong" acid, but only releases a single
proton when it dissolves. What...
asked 2 hours ago -
The
second floor of a house is 6 m above the street level. How much
work...
asked 2 hours ago