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Energies 2017, 10(8), 1148; doi:10.3390/en10081148

Performance Study of Hybrid Magnetic Coupler Based on Magneto Thermal Coupled Analysis

1
Anhui Mining Machinery and Electrical Equipment Collaborative Innovation Center, Anhui University of Science and Technology, Huainan 232001, China
2
Hefei Institute of Material Science, Chinese Academy of Sciences, Hefei 230000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Tomonobu Senjyu
Received: 3 July 2017 / Revised: 1 August 2017 / Accepted: 1 August 2017 / Published: 4 August 2017
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Abstract

Specific to a problem of large vibro-impact aris ing from the cutting unit of the hard rock tunnel boring machine (TBM), a hybrid magnetic coupler based on soft start was proposed in this paper. The mathematical model for total eddy current losses of such a coupler was established by field-circuit method. Then, magnetic-thermal coupling simulation was performed by virtue of three-dimensional finite element software. In addition, an experimental prototype was independently designed; by comparing the model with experimental data, validity of the above mathematical model was verified. The relevant research results indicated that calculated values were consistent with experimental values, and the magneto thermal coupling method could be applied to accurately analyze temperature distribution of the hybrid magnetic coupler. By contrast to the existing magnetic coupling of the same dimension, output efficiency of the hybrid magnetic coupler was improved by 1.2%. Therefore, this research technique can provide references for designing the cutting unit of hard rock TBM with a high start impact. View Full-Text
Keywords: hybrid magnetic coupler; magneto thermal coupling; output efficiency; total eddy current loss hybrid magnetic coupler; magneto thermal coupling; output efficiency; total eddy current loss
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Wang, S.; Guo, Y.; Cheng, G.; Li, D. Performance Study of Hybrid Magnetic Coupler Based on Magneto Thermal Coupled Analysis. Energies 2017, 10, 1148.

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