Aluminum is good, but copper is better -- at least when you're talking about die-cast rotors in three-phase induction motors. Siemens Energy & Automation, based in Alpharetta, Ga., offers a new line ...
Global electric vehicle makers are gradually adopting copper-based rotar motor technology instead of the magnet-based motors to power the new breed of vehicles, according to Mr Hal M. Stillman, ...
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