- #1
GeekyGuy
- 8
- 0
I've been pondering over this for a while. Is it possible to make a DC motor that does not require a commutater.
Click For Summary
SUMMARY
DC motors can function without a commutator by utilizing brushless DC motors, which employ transistors to switch the magnetic poles instead of traditional brushes. These motors, commonly found in computer fans, use permanent magnets for the armature. Additionally, universal motors, like those in corded power drills, can operate on both AC and DC due to their series-wound stator and armature, although they do include brushes. The distinction between AC and DC motors can often be blurred based on their operational characteristics rather than solely on the type of power source.
PREREQUISITES- Understanding of brushless DC motor technology
- Knowledge of universal motor design and operation
- Familiarity with magnetic field principles in electric motors
- Basic electronics, including transistor functionality
- Research brushless DC motor design and applications
- Explore the operation and advantages of universal motors
- Learn about the role of transistors in motor control
- Investigate the differences between AC and DC motor characteristics
Electrical engineers, hobbyists in robotics, and anyone interested in motor technology and design innovations.
- #2
Suerbatica
- 10
- 0
Is it possible to make a Motor output a DC voltage without commutation? I don't fully understand your question.
Suer
Suer
- #3
Cliff_J
Science Advisor
- 789
- 7
Look at brushless DC motors like used on some computer fans - the switching of north/south poles on the stator is handled by transistors that switch back and forth instead of brushes and the armature is permanent magnets.
If you take a universal motor like used in a corded power drill, it does run on AC current from the wall but will also run on DC because its really just a DC motor with the stator and armature wound in series. Sure it has brushes that wear out, but its still cheap to build and has great startup torque and speed control that a shaded-pole AC induction motor couldn't touch and is why its used.
So sometimes the distinctions between what is considered an AC or a DC motor can be blurred somewhat by their operation and not just the power source.
If you take a universal motor like used in a corded power drill, it does run on AC current from the wall but will also run on DC because its really just a DC motor with the stator and armature wound in series. Sure it has brushes that wear out, but its still cheap to build and has great startup torque and speed control that a shaded-pole AC induction motor couldn't touch and is why its used.
So sometimes the distinctions between what is considered an AC or a DC motor can be blurred somewhat by their operation and not just the power source.
- #4
- #5
GeekyGuy
- 8
- 0
Thanks. 
A motor that uses an intelligent electronic controller. I never heard of that before, but it sounds pretty cool.
Thanks again.
A motor that uses an intelligent electronic controller. I never heard of that before, but it sounds pretty cool.Thanks again.
Similar threads
- · Replies 13 ·
- · Replies 5 ·
- · Replies 3 ·
- · Replies 4 ·
- · Replies 7 ·
- · Replies 24 ·