Analytic calculation of electromagnetic performance of magnetic field of air-core reactor

作者：Bao, Xiaohua^*; Zhang, Cheng; Hu, Yunpeng

来源：Transactions of China Electrotechnical Society, 2016, 31: 68-75.

• Air-core reactor
• Analytical calculation
• Eddy current-loss
• Electromagnetic performance
• Electromagnetic properties
• Leakage magnetic field
• Magnetic-field intensity
• Shielding effectiveness

Aimed at the question of leakage magnetic field of air-core reactor, the corrective actions of magnetic shielding measures are taken. By installing hybrid passive magnetic shielding device, the magnetic field intensity is reduced in the aimed protected area and the health of staff and the security of equipments which working in the aimed area are protected and guaranteed. Under the excitation of sinusoidal current of certain frequency range, the analytical calculation formulas of eddy-current loss and shielding effective (SE) are solved by Poynting theorem and Maxwell equations. The finite element 3D models with different hybrid passive shielding are created to simulate the results of total eddy-current loss in shielding structure and the shielding effective of the observation point. By simulation, the electromagnetic properties of different combinations with hybrid passive shielding can be assessed and the suggestions and reference for the designers of hybrid passive magnetic shielding are provided.

• 出版日期2016
• 单位合肥工业大学