What is 'copper loss' (I²R loss) in an EV traction motor, and how does motor design mitigate it?
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A
Energy lost as heat in stator windings due to current flow; reduced by using larger or more conductive copper conductors
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B
Energy lost to friction in the motor bearings; reduced by using ceramic bearings
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C
Energy lost as eddy currents in the rotor; reduced by laminating the core
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D
Energy lost to back-EMF at high speeds; reduced by field weakening