A Series Resonant Converter based Experimental Measurement of B-H Curve for Core Loss Estimation of a High Frequency Inductor

Isame, M and Roy, SK and Prasad, E and Basu, K (2023) A Series Resonant Converter based Experimental Measurement of B-H Curve for Core Loss Estimation of a High Frequency Inductor. In: UNSPECIFIED, pp. 5658-5663.

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Abstract

Estimation of core loss is essential for high-frequency converter design. For high-frequency applications, Ferrite is a popular choice. Eddy current loss in ferrite is negligible due to high material resistivity and core loss is dictated by the hysteresis loss. To estimate hysteresis loss, the B-H loop needs to be known for different values of frequencies and B values. However, in the material datasheet, B-H loop data is generally given for a single operating condition. So, from the converter design and optimization point of view, it is essential to obtain the B-H curve for different operating conditions. It may help in predicting the B-H loop for non-sinusoidal excitation experienced in switching converters. In this work, a new B-H loop measurement method is proposed. Compared to the linear amplifier-based conventional measurement technique, the proposed method can be used for high-power and high-frequency applications. Also, it does not require the input DC voltage supply higher than the drop across the device under test (for example, magnetic components like inductor and transformer). The proposed technique is used to measure the B-H loop for a 47 μH, 100kHz inductor designed for the dual active bridge (DAB) converter for a wide range of operating conditions. The experimentally obtained B-H loops are then used to obtain the hysteresis loss. The proposed experimental measurement technique is compared with the analytical method (using the Stientzmez equation) and Ansys Maxwell-based electromagnetic simulation for a wide range of operating conditions. © 2023 IEEE.

Item Type:	Conference Paper
Publication:	2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	01 Mar 2024 10:27
Last Modified:	01 Mar 2024 10:27
URI:	https://eprints.iisc.ac.in/id/eprint/84044

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