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High Frequency Core Loss Measurement of Low Loss Angle Magnetic Component
Author(s): 
Pages: 133-138
Year: Issue:  11
Journal: Transactions of China Electrotechnical Society

Keyword:  磁心损耗 损耗测量 直流法 小损耗角;
Abstract: 针对传统交流功率计法测量阻抗角接近90°的磁件磁心损耗时有很大的测量误差,提出了一种新型的直流测量法,基本思想是通过一个DC-AC逆变电路将直流电压转变为矩形波电压,施加到被测磁件上,测量直流输入的有功功率得到磁心损耗。其中,为了有效扣除磁心损耗外的其他损耗,提出了用空心电感定标的方法。实验结果表明:直流测量法可用来测量小损耗角磁件磁心损耗,且不受阻抗角的影响,具有很高的精度。
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