TY - JOUR
T1 - An Impedance Converter-Based Probe Characterization Method for Magnetic Materials’ Loss Measurement
AU - Huang, Anfeng
AU - Kim, Hongseok
AU - Zhang, Hanyu
AU - He, Qiusen
AU - Pommerenke, David
AU - Fan, Jun
PY - 2022/6/1
Y1 - 2022/6/1
N2 - As an essential component in power applications, magnetic cores and their design play an important role in achieving high efficiency and high power density. Accurate measurement of the core loss is important for inductor and power converter optimization. Loss measurement depends on exactly determining the phase angle between the voltage and the current. However, measurement errors can be introduced due to the discrepancies in propagation delays in the voltage and current sensors. In addition, the propagation delay is frequency-dependent but has a large influence in the MHz range and above. Previously, several methods have been proposed to compensate for this discrepancy, but they are time-consuming and can result in large measurement errors. In this article, a characterization method for core loss based on a vector network analyzer (VNA) and an impedance converter is proposed to accurately measure the phase discrepancies between voltage and current sensors. The proposed method is experimentally verified up to 15 MHz with a three-coil test setup.
AB - As an essential component in power applications, magnetic cores and their design play an important role in achieving high efficiency and high power density. Accurate measurement of the core loss is important for inductor and power converter optimization. Loss measurement depends on exactly determining the phase angle between the voltage and the current. However, measurement errors can be introduced due to the discrepancies in propagation delays in the voltage and current sensors. In addition, the propagation delay is frequency-dependent but has a large influence in the MHz range and above. Previously, several methods have been proposed to compensate for this discrepancy, but they are time-consuming and can result in large measurement errors. In this article, a characterization method for core loss based on a vector network analyzer (VNA) and an impedance converter is proposed to accurately measure the phase discrepancies between voltage and current sensors. The proposed method is experimentally verified up to 15 MHz with a three-coil test setup.
KW - Probes
KW - Loss measurement
KW - Voltage measurement
KW - Impedance
KW - Propagation delay
KW - Current measurement
KW - Core loss
UR - https://ieeexplore.ieee.org/document/9570372/
U2 - 10.1109/JESTPE.2021.3119558
DO - 10.1109/JESTPE.2021.3119558
M3 - Article
SN - 2168-6785
VL - 10
SP - 3045
EP - 3054
JO - IEEE Journal of Emerging and Selected Topics in Power Electronics
JF - IEEE Journal of Emerging and Selected Topics in Power Electronics
IS - 3
M1 - 9570372
ER -