Question
In: Electrical Engineering
Starting from the dynamic equations of the PM DC motor obtain the voltage-to-speed transfer function in...
Starting from the dynamic equations of the PM DC motor obtain
the voltage-to-speed
transfer function in s-domain. Draw the block diagram.
Solutions
Manojponduru answered 1 year agoRelated Solutions
Starting from the dynamic equations of the PM DC motor obtain the voltage-to-speed transfer function in...
Starting from the dynamic equations of the PM DC motor obtain
the voltage-to-speed transfer function in s-domain. Draw the block
diagram.
Problem: A PM DC motor has the following parameters: Rated Power 10 hp; Rated armature voltage...
Problem: A PM DC motor has the following parameters:
Rated Power 10 hp;
Rated armature voltage 230 V-DC;
Rated RPM: 1800;
Armature Resistance: 0.2 Ohm
Armature Inductance: 0.005 H
Inertia (motor plus mechanical load): 0.1 kgm^2;
Viscous friction coefficient: 0.015 Nms
1. Compute the voltage constant of the motor. Also compute the
rated current and rated torque of the motor (obtained at the rated
RPM). If the motor is supplied by 230 V across the armature, and
the only torque...
(a) In DC motor, quadrant of operation can be defined by the armature voltage and current...
(a)
In DC motor, quadrant of operation can be defined by the
armature voltage and
current of the motor. By using an appropriate diagram, briefly
explain the
definition of all four quadrant of operation based on armature
voltage and current.
(b)
A chopper is used to control speed of 45.36 kW, 1750 rpm, 240 V,
189 A
permanent magnet DC motor with 0.01 Ω armature resistance. This
chopper-fed
DC motor is able to operate in both motoring and braking
mode...
I have a question for the effect and difference on a DC motor for the speed(...
I have a question for the effect and difference on a DC motor
for the speed( rad/s) in time (sec) if you apply:
1. Nothing (so no charge in the circuit only the mecanic charge
of the generator)
2. A resistant charge (only the resistant is plug in with the
generator)
3. Short circuit (No exterior electric charge but the terminals
are bounds together so an excessive amount of current flow into the
circuit)
4. Capacitive charge (only the capacitor...
In order for a dc motor to function properly, it must be protected from physical damage...
In order for a dc motor to function properly, it must be
protected from physical damage during the starting period. At
starting conditions, the motor is not rotating, and armature
generated voltage EA = 0 V. Since the internal resistance of a
normal DC motor is very low, a very high current flows. It is
possible for a motor to be severely damaged by such currents, even
if they last for only a moment. A solution to the problem of...
Design and analyse of a circuit which turns a DC motor at a speed which is...
Design and analyse of a circuit which turns a DC motor at a
speed which is proportional to how much a temperature is away from
a set temperature, and turns:
Clockwise when temperature is greater than (say) 25 degrees
C.
Anticlockwise when the temperature is less than (say) 20 degrees
C.
Such a circuit might be used to regulate the temperature of a
room by turning a ceiling fan to move warm air in/out of that room
(using the roof...
A) Refer to the diagram on “Speed Control of a Shunt Wound DC Motor. Suppose the...
A) Refer to the diagram on “Speed Control of a Shunt Wound DC
Motor.
Suppose the no load voltage V = 90V, Ra +
R1 = 4 ohms, Rsh + RF = 130 ohms,
and the motor runs at a rated speed of 1000 RPM when IL
= 4 amps. What is the back EMF VB in volts when the
motor runs at IL = 6 amps?
Note: Type a 1-decimal number, rounded off to the nearest
0.1
B) How...
When running at 4000rpm with an applied voltage of 42v, a DC permanent magnet motor develops...
When running
at 4000rpm with an applied voltage of 42v, a DC permanent magnet
motor develops 23.1W of output power. The motor has a theoretical
no-load speed of 6000rpm at an applied voltage of 42v.
What is the
motor output torque at 4000rpm in N-m, What is the motors
theoretical back-EMF constant, What is the motors theoretical
torque constant, What is the motors theoretical stall torque, What
is the motors armature resistance, What is the motors efficiency at
4000rpm when...
Why is the starting current high in a DC motor? Explain the working of a four-point...
Why is the starting current high in a DC motor? Explain the
working of a four-point starter for a DC machine.
DO NOT COPY FROM PREVIOUS SOLUTIONS Design a low-voltage, high-current, shunt-excited DC motor for an industrial...
DO NOT COPY FROM PREVIOUS
SOLUTIONS
Design a low-voltage, high-current, shunt-excited DC motor for
an industrial facility.
The motor should have the following specifications:
The output power of the machine is expected to be between (50)
hp.
The copper losses in the machine should be between 4% and 7% of
the output power.
The brush losses in the machine should be between 2% and 5% of
the copper losses.
The no load power should not exceed 6% of the output...
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