Shielding of Power Frequency Magnetic Field

• Main Authors: LIU CHIA YI, 劉佳益
• Other Authors: C. J. Wu
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/65259132089781498978

碩士 === 國立臺灣科技大學 === 電機工程系 === 91 === This thesis is to study the magnetic-field shielding methods caused by electric power lines. The finite element based simulation package, FLUX3D, can be used to establish the simulation model and to evaluate the magnetic-field shielding effect of aluminum plates, silicon-steel plates and Amumetal. It is desired to reduce magnetic-field interferences due to three-phase currents. For the improvement-scheme of power frequency magnetic-field, we can concentrate power lines arrangement and have suitable phase arrangement. So that the magnetic-field flux density due to three-phase current can be canceled by each other. Finally, we can use appropriate metal plates to shield magnetic-field, and to reduce magnetic-field interference furthermore. We should find the better combination shielding methods of aluminum plates, silicon-steel plates and Amumetal.