So does it consume significantly more electricity?
Not really. The excitation power is a small fraction of the total.
The problem is that it makes the rotor far less mechanically robust and also heavier. That's why these motors are less powerful.
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Not really. The excitation power is a small fraction of the total.
The problem is that it makes the rotor far less mechanically robust and also heavier. That's why these motors are less powerful.