Abstract
Up to now the Epstein frame, as a standard magnetic measurement method, is still widely used in magnetic measurement, even though its advantages and disadvantages have been well recognized. As an application-oriented improvement, magnetic measurements based on the combination of Epstein frames of different sizes and loss data weighted processing have been proposed by the authors and briefly demonstrated in this chapter. According to a frequent request from industrial users, the multi-directional electromagnetic properties of the grain-oriented silicon steel are modeled using the 25 cm Epstein frame, in which the specimens are cut at different angles to the rolling direction. The magnetization curves (B–H) and the specific total loss curves (Bm–Wt) are measured at different sampling angles, meanwhile, the effects of the stress relief annealing on the electromagnetic properties are also examined.
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Acknowledgements
The authors thank all colleagues for the co-research on the Epstein combination method. Under the guidance of former Chief Engineer of Baobian Electric., Qifan Hu, the magnetic measurement based on multi-angle sampling was completed by Guisheng Han, Lanrong Liu, Yana Fan, and Junjie Zhang from the Institute of Power Transmission and Transformation Technology, Baobian Electric., and Dr. Xian Zhang of Tianjin Polytechnic University. It was also supported by colleagues from other relevant departments of Baobian Electric.
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Cheng, Z., Shi, L., Sievert, J. (2020). Magnetic Measurement Based on Epstein Combination and Multi-angle Sampling. In: Cheng, Z., Takahashi, N., Forghani, B. (eds) Modeling and Application of Electromagnetic and Thermal Field in Electrical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-0173-9_8
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DOI: https://doi.org/10.1007/978-981-15-0173-9_8
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