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Brushless Dc Electric Motor

Brushless Dc Electric Motor

The armature contains an electromagnet. When you run electrical power into this electromagnet, it generates a magnetic field in the armature that draws in and repels the magnets in the stator. Therefore the armature spins through 180 degrees.

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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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Note: ※is the dimension of motor less then 4kw

The dimension L of 4kw motor is approximately 470.

Dimension marked italic will be little changed according to motor power.

Some new special specifications are not shown in the table. They are smaller.

Prompt design according to customer’s requirement is available.


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