摘要
交流电流流过RLC谐振电路中会出现涡流,线圈电阻也将随交流频率的增加而急剧上升。由于单芯线圈与多芯线圈产生趋肤与邻近效应的机理不同,故两者的交流电阻随交流频率的增加趋势有所不同。采用谐振法测量了单芯线及多芯线中电阻与交流频率的关系,仿真计算了单芯、多芯线圈在不同交流频率下的涡流损耗,表明在高频交流情况下,多芯线圈受涡流效应的影响要高于单芯线圈。同时,实验测试与计算结果相吻合。
Eddy currents occur when the AC current flows through the RLC resonant circuit,and the coil resistance will rise sharply as the AC frequency increases.Because the mechanism of skin and proximity effects between single-core coils and multi-core coils is different,the AC resistance of the two coils is different with the increase of AC frequency.The relationship between resistance and AC frequency in single-core and multi-core wires was measured by the resonance method,and the eddy current losses of single-core and multi-core coils under different AC frequencies were simulated and calculated,which showed that in the case of high-frequency AC,the eddy current effect of multi-core coils was higher than that of single-core coils.Experimental tests are in agreement with the calculated results.
作者
朱昊昕
贺西平
廖迈伟
ZHU Haoxin;HE Xiping;LIAO Maiwei(School of Physics and Information Technology,Shanxi Normal University,Xi'an 710119,China)
出处
《大学物理实验》
2024年第3期77-83,共7页
Physical Experiment of College
基金
国家自然科学基金(12174131)。
