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Analysis of Transmission Power and Efficiency of Side-Mounted Inductive Power Supply System for Metal Rotary Shafts

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Abstract

The online detection of metal shaft parameters, such as torque, power and deformation, is widely applied in engineering projects. The power supply of metal shafts is the key to the detection reliability and practicality. However, traditional slip ring and battery power supply are limited in reliability and service life. In this paper, a side-mounted inductive power supply system for the rotating metal shaft is designed by using a Utype core. The equivalent reluctance and circuit models of the system are analyzed, and the methods of improving the coupling coefficient and transmission efficiency are proposed from theoretical analysis. Through the finite element simulation analysis of the system, the general relationships between the transmission power and efficiency of the system and the number of coil turns, the working frequency and the load are analyzed. The accuracy of theoretical analysis and simulation analysis is verified by the practical power transmission experiments. This paper provides a novel and reliable power supply method for inductive power supply of rotating equipment, and enriches the solutions of rotating power supply.

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Acknowledgment

The authors thank the National Defense High Torque First-Level Metering Station for supporting the experimental work in this paper.

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Authors and Affiliations

  1. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Yong Zhao  (赵勇), Xiaojun Ji  (吉小军) & Junkai Gao  (高浚凯)

  2. The No.704 Research Institute of China Shipbuilding Industry Corporation, Shanghai, 200310, China

    Ming Dai  (戴明) & Hongli Qi  (齐红丽)

Authors
  1. Yong Zhao  (赵勇)
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  2. Xiaojun Ji  (吉小军)
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  3. Ming Dai  (戴明)
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  4. Hongli Qi  (齐红丽)
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  5. Junkai Gao  (高浚凯)
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Corresponding author

Correspondence to Xiaojun Ji  (吉小军).

Additional information

Foundation item: the National Natural Science Foundation of China (No. 51475306)

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Zhao, Y., Ji, X., Dai, M. et al. Analysis of Transmission Power and Efficiency of Side-Mounted Inductive Power Supply System for Metal Rotary Shafts. J. Shanghai Jiaotong Univ. (Sci.) 25, 273–280 (2020). https://doi.org/10.1007/s12204-020-2181-4

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  • DOI: https://doi.org/10.1007/s12204-020-2181-4

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