A resonant method to construct core loss of magnetic materials using impedance analyser
A resonant method to construct core loss of magnetic materials using impedance analyser
复制标题
利用阻抗分析仪构建磁性材料磁芯损耗的谐振方法
DOI：
10.1109/pesc.1998.703454
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
D.M. Zhang
中科院分区：
文献类型：
--
作者：
C. F. Foo;D.M. Zhang
提出了一种简单的基于阻抗测量的室内实验装置，用于测定铁磁材料在正弦激励下的铁芯损耗。高频变压器用的磁芯是由磁芯损耗极低的材料制成的。阻抗法计算铁芯损耗的精度对测量设备的寄生阻抗和时延带来的相位误差很敏感。为了尽量减少这种误差，提出了一种使用阻抗分析仪的谐振方法来构造铁芯损耗。该方法对高频电压的要求不大。该方法与补偿技术相结合，在构造高频铁芯损耗时提供了相当精确的结果。
A simple in-house experimental setup based on impedance measurement for determining the core loss of ferrimagnetic materials under sinusoidal excitation is proposed. The magnetic cores used in high frequency transformers are made of materials having very low core loss. The accuracy of the core loss constructed by the impedance method is sensitive to phase errors introduced by the parasitic impedances and time delays of the measurement equipment. To minimize this error, a resonant method using an impedance analyser is proposed for constructing the core loss. The voltage requirement for this method at high frequency is not large. The proposed method, implemented with compensating techniques, provides reasonably accurate results in constructing core loss at high frequency.