Abstract
This paper presents a power efficiency study of eddy current shielding of structural components in electroheat engineering. The objective of this study is to minimize power loss in steel structures by shielding them from magnetic fields produced by nearby conductors carrying large AC currents with the least amount of materials. The hybrid integrodifferential finite element - Green's function method is used for this investigation. The structural components studied are I-shaped steel beams located in the vicinity of a high current carrying conductor. Total induced power losses in the shield and beam are obtained and compared with power losses of the beam in the absence of the shield. The influences of structural and shield dimensions on the total power losses (shielding effectiveness) are determined. Shielding criteria for I-beams are established.
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