hello please solve the following question below. answer to for decimal places thank you in advnace A 460 V permanent-mag
Posted: Mon May 02, 2022 1:20 pm
hello please solve the following question below. answer to for
decimal places
thank you in advnace
A 460 V permanent-magnet excited DC motor has armature
resistance of 1.5 Ω. When driving a load of constant load torque
at rated speed of 1,200 rpm, the armature takes rated 20 A. Speed
is controlled by armature voltage variation, and armature is
supplied from a three-phase fully controllable bridge rectifier.
Available AC voltage is three-phase 415 V, 50 Hz, interfacing
transformer is not used, and armature current is continuous.
a) The machine operates at rated speed with rated load.
Determine rectifier output voltage and thyristor firing angle
Vrect1 = V
αα1 = ° (degree)
b) Determine the rated motor torque and power.
Ten = Nm
Pn = kW
c) The machine operates at 40 % of the rated speed with
60 % of the rated load. Determine rectifier output voltage and
the thyristor firing angle.
Vrect2 = V
αα2 = ° (degree)
decimal places
thank you in advnace
A 460 V permanent-magnet excited DC motor has armature
resistance of 1.5 Ω. When driving a load of constant load torque
at rated speed of 1,200 rpm, the armature takes rated 20 A. Speed
is controlled by armature voltage variation, and armature is
supplied from a three-phase fully controllable bridge rectifier.
Available AC voltage is three-phase 415 V, 50 Hz, interfacing
transformer is not used, and armature current is continuous.
a) The machine operates at rated speed with rated load.
Determine rectifier output voltage and thyristor firing angle
Vrect1 = V
αα1 = ° (degree)
b) Determine the rated motor torque and power.
Ten = Nm
Pn = kW
c) The machine operates at 40 % of the rated speed with
60 % of the rated load. Determine rectifier output voltage and
the thyristor firing angle.
Vrect2 = V
αα2 = ° (degree)