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E358 LESSON 8 - Coggle Diagram
E358 LESSON 8
DC MOTORS
BRUSHLESS MOTOR
Use electronic communication
control current in stator windings
interact with permanent magnets on rotor
BRUSHED MOTOR
Mechanical Brushes
commutate current in armature windings
AC MOTORS
Induction Motors
Squirrel Cage Induction Motors
SImple
Robust
widely used
Wound Rotor Induction Motor
External resistance
Synchronous Motors
Permanent Magnet Synchronous Motors
Permanent magents
High Efficiency
Power density
Wound Field Synchronous Motors
Electromagnets
Advantages
DC
Brushed
Simple Control
High starting torque
Relatively Inexpensive
Brushless
Higher efficiency
Longer Lifespan
Higher Power Density
Quieter Operation
Better speed control and wider speed range
AC
Induction Motor
Simple
Robust Construction
Inexpensive
Low maintenance
High starting torque
Can operate directly from AC power
Synchronous Motors
High Efficiency
Precise Speed Control
High Power Factor
High torque-to-inertia ratio
Disavantages
DC
Brushless DC
More complex control electronics
Can be more expensive
Brushed DC
Lower efficiency
Require regular maintenance due to bush wear
Limited lifespan
Not suitable for explosive environment
AC
Induction Motors
Speed control more complex
Lower power factor
Starting torque
Synchronous Motors
More complex and expensive
Starting can be more complex