| Application: | Custom |
|---|---|
| Speed: | Custom |
| Number of Stator: | Custom |
| Function: | Driving |
| Casing Protection: | Custom |
| Number of Poles: | Custom |
| Samples: |
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brushless dc electric motor
With the Auto Chain advent of cheap computers and power transistors, it became possible to "turn the engine inside out" and eliminate the brushes. In a brushless DC electric motor (BLDC), you put the long lasting magnets on the rotor and you move the electromagnets to the stator. You then use a computer (connected to high-power transistors) to charge up the electromagnets as the shaft turns. This technique has all sorts of advantages:
Because a computer regulates the motor rather than mechanical brushes, it's more precise. The computer may also factor the speed of the motor into the equation. This makes brushless motors more efficient.
There is absolutely no sparking and much less electrical noise.
There are no brushes to degrade.
With the electromagnets on the stator, they are extremely easy to cool.
You can have a lot of electromagnets on the stator for more precise control.
The only disadvantage of a brushless engine is its higher initial cost, but you can often recover that cost through the higher efficiency over the life of the motor.
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