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A DC Motor whose poles are made of Permanent Magnets is known as Permanent Magnet DC (PMDC) Motor. The magnets are radially magnetized and are mounted on the inner periphery of the cylindrical steel s
A
DC Motor whose poles are made of Permanent Magnets is known as Permanent Magnet
DC (PMDC) Motor. The magnets are radially magnetized and are mounted on the
inner periphery of the cylindrical steel stator. The stator of the motor serves
as a return path for the magnetic flux.
The rotor has a DC armature, with commutator segments and brushes.
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A
DC Motor whose poles are made of Permanent Magnets is known as Permanent Magnet
DC (PMDC) Motor. The magnets are radially magnetized and are mounted on the
inner periphery of the cylindrical steel stator. The stator of the motor serves
as a return path for the magnetic flux.
The rotor has a DC armature, with commutator segments and brushes.
Applications
of the Permanent Magnet DC Motor
The
PMDC motors are used in various applications ranging from fractions to several
horsepower. They are developed up to
about 200 kW for use in various industries. The following applications are
given below.
PMDC
motors are mainly used in automobiles to operate windshield wipers and washers,
to raise the lower windows, to drive blowers for heaters and air conditioners
etc.
They
are also used in computer drives.
These
types of motors are also used in toy industries.
PMDC
motors are used in electric toothbrushes, portable vacuum cleaners, food
mixers.
Used
in a portable electric tool such as drilling machines, hedge trimmers etc.
Advantages
of the Permanent Magnet DC Motor
Following
are the advantages of the PMDC Motor.
They
are smaller in size.
For
smaller rating Permanent Magnet reduces the manufacturing cost and thus PMDC
motor are cheaper.
As
these motors do not require field windings, they do not have field circuit
copper losses. This increases their efficiency.
Parameter
table
Detailed Images
