Abstract：Integrated EMI filters, in which the high permittivity material is used, play an important role in restraining conducted EMI of the power electronic system. The characteristics of the high permittivity material, under the operating voltage in circuits, are very important. In this paper, a system is proposed to measure the impedance of a capacitor in the high DC voltage condition. According to the different discharge time constants of capacitors, the system is divided into two modes. In addition, the CaCu3Ti4O12 ceramic has been measured by the system, as well as the high-frequency models of resistors, conductors and capacitors are established. The parasitic parameters of the models are extracted by an analytical approach, which are used on the data processing. A test verifies the measure system.
王文涛, 王世山, 龚敏. 在直流偏置电压下的材料介电常数测试系统设计[J]. 电工技术学报, 2016, 31(14): 112-121.
Wang Wentao, Wang Shishan, Gong Min. System Design for Measurement of Material Permittivity with DC Bias Voltage. Transactions of China Electrotechnical Society, 2016, 31(14): 112-121.
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