Basic Electrical and Electronics Engineering: Unit II: Electrical Machines
Torque Equation of DC Motor
Torque is turning or twisting force about an axis torque is measured by the product of force and the radius at which the force acts.
TORQUE
EQUATION
Torque
is turning or twisting force about an axis torque is measured by the product of
force and the radius at which the force acts. Consider a wheel of radius 'r'
metres acted on by a circumferential force 'F' Newton as shown in fig 3.31.
The
angular velocity of the wheel is
ω
= 2πN / 60
Torque,
T = F × r
Work
done per revolution = F × distance moved
=
F × 2πг
Power
developed, P = Work done / Time = F × 2πг / time for 1 rev
P
= Τω
T
= Torque in N-m,
ω
= Angular speed r/sec
Power
in armature = Armature torque × ω
The
torque of a DC motor is proportional to the product of the armature current and
the flux.
Basic Electrical and Electronics Engineering: Unit II: Electrical Machines : Tag: : - Torque Equation of DC Motor
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