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TYPES OF ELECTRIC MOTOR - Coggle Diagram
TYPES OF ELECTRIC MOTOR
1.
DC:
direct current
3.
AC:
alternating current
DC BRUSHED MOTORS
:
first electric motor
still used
advantages:
adaptable for different speed and torque reeds
applications:
ideal for ships and railway locomotives
due to high torque at low speed
disadvantages:
commutator and brusches --> wear
requires maintenance
possible sparks --> unsafe
2.
BRUSHLESS DC MOTORS (BLDC):
do not require: commutator or brushes
electronic switching circuit
applications:
vehicles, drones, automatc machinery
invented by Galileo ferraris and Nikola Tesla
advantages:
in the late 19th century
widespread in the early 20th century
no need for commutator or brushes
reverse direction automatically
simple design
lower maintenance
spped: depends on the frequency
AC induction motors:
for household applianes
ex: washing machines
stator: electric windings connected to power supply
rotating magnetic field
advantages:
inexpensive
reliable
3 phase AC:
3 separate windings in the stator
each connected to the power supply