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A comment on An electric motor that does not need expensive rare-earth magnets. Parent comment
It has all to do with speed x torque (x power) behaviour, and how it's controlled.
To change the speed on an induction motor is complicated, as opposed to changing the speed in a DC motor, where you just change voltage supplied
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It has all to do with speed x torque (x power) behaviour, and how it's controlled.
To change the speed on an induction motor is complicated, as opposed to changing the speed in a DC motor, where you just change voltage supplied