感应取能电源磁芯功率输出特性研究

Power Output Characteristics of Magnetic Core in CT Energy Harvesting Devices

电流互感器取能装置的磁芯是取能装置性能的决定性因素。分析了互感器取能电源的工作原理,建立了磁芯功率输出模型,并通过实验验证了模型的有效性。针对实际应用的要求,提出了取能磁芯的功率密度的概念。理论分析并实验验证了功率密度与气隙、磁芯尺寸以及磁芯材料的关系。

The magnetic core is the dominant factor of the performance of a current transformer （CT） energy harvesting device. In this paper, a power output model is built and is verified through experiments. According to the actual application requirements, the concept of power density is proposed. The relations of power density to air gap, magnetic core material, and size of magnetic core are analyzed and experimentally verified.