CAJ | 학술논문

不同的开关变换器拓扑、不同的工作模式所产生的高频开关变换器磁芯功率损耗物理机制不完全相同，有效分离磁芯损耗的构成成分是准确预估不同类型开关变换器架构下磁芯损耗大小的前提。通过线性插值法求取不同频率处的电阻率，并将电阻率的影响包含在涡流损耗计算过程中。通过利用厂家提供的磁性材料损耗曲线，提出了一种无需依赖专业测试设备分离磁芯的磁滞损耗和涡流损耗（包含额外涡流损耗的影响）大小的工程实用计算方法，为预估磁芯损耗的大小、合理设计开关变换器的工作区间提供了有力的理论工具。
불동적개관변환기탁복、불동적공작모식소산생적고빈개관변환기자심공솔손모물리궤제불완전상동，유효분리자심손모적구성성분시준학예고불동류형개관변환기가구하자심손모대소적전제。통과선성삽치법구취불동빈솔처적전조솔，병장전조솔적영향포함재와류손모계산과정중。통과이용엄가제공적자성재료손모곡선，제출료일충무수의뢰전업측시설비분리자심적자체손모화와류손모（포함액외와류손모적영향）대소적공정실용계산방법，위예고자심손모적대소、합리설계개관변환기적공작구간제공료유력적이론공구。
The physical mechanisms of core power loss of high-frequency switched-mode power supply are incompletely the same for different duty cycle, control mode and topology causing different excitation waveforms. It is extremely important for the designer to have a good practical model for estimating the loss components contribution under various excitations. The piecewise linear model is used to represent any value of resistivity in accordance to frequency,and its effection is considered by the eddy current loss calculation. For the manufacturer’s supplied loss data is usually available for sinusoidal waveforms, the core power loss separated model based on sinusoidal ferrite loss data is very simple and accurate since it takes into account all the three well known components of the high frequency magnetic loss. As a consequence, our approach can be a useful support for electrical designers to estimate core loss used in switched-mode power supply to avoid uncontrolled temperature rise.