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  1. avada

    Why Electric motors are inefficient at low revs?

    Hello! Everywhere efficiency is elaborated they always mention that electric motors have low efficiency at low revolutions or power. For example Tesla announced that they added a second motor to the model S which improved it's efficiency. I was wondering what are the root causes of this...
  2. avada

    Is one pole BLDC without switching possible?

    Hello! This looks like the place to ask. I was wondering, if a DC motor could work this way, with only nort poles facing outward, and the south poles facing into the center. Which wouldn't need any sort of commutation/switching, I guess... Something like this: If something like this does...
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