Redesign from 220 V, 200 Hz ( 12 000 rpm) to 165 V, 300 Hz ( 18 000 rpm)

Redesign from 220 V, 200 Hz ( 12 000 rpm) to 165 V, 300 Hz ( 18 000 rpm)
 
 There are two options:
 
 - keep the same power or
 
 - keep the same torque.

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