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.
关键词
交流阻值/交流频率/趋肤效应/邻近效应
Key words
AC resistance/AC frequency/skin effect/proximity effect
维普
万方数据