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裵俊漢(Joon-Han Bae),裵德權(Duck-Kweon Bea) 대한전기학회 2006 전기학회논문지A Vol.55 No.8
Copper is widely used in electric wire, cable, conductor in electric devices. As the demand for electric power is increasing rapidly, electric power devices are getting amazingly bigger and complicated. The using of light-weight conductor can reduce the size and making cost of the electric devices. In high-frequency application, Electric current in a conductor tends to shift to the surface of the conductor, resulting in an uneven current distribution in the inner conductor. In the extreme case the current may essentially concentrate in the "skin" of the inner conductor as a surface current. In high frequency application, therefore, inner area of copper conductor may replace with aluminum conductor, which reduces the weight of conductor. This 'paper describes the manufacture and evaluation of composite conductors made of copper and aluminum. The optimum extruding ratio was 16 at 300℃. The electrical resistance of manufactured composite bus bar was 57?Ω at DC and 49.5?Ω at 300㎐.
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