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- Title
Research on Coupled Magnetic-Thermal Network Modeling of Double-sided Permanent Magnet Tubular Machine.
- Authors
LU Zhemin; GUO Liang; LU Wenqi
- Abstract
Doubled-sided permanent magnet tubular machine has higher space utilization ratio and good application prospects in fields like wave energy generation. However, characteristics like multi-parameter, nonlinear and strong coupling brings difficulties to electromagnetic analysis and thermal analysis for bad heat dissipation and asymmetry between inner and outer stators. In order to realize the accurate and fast solution of its magnetothermal characteristics, an iterative bidirectional coupled magnetic-thermal network modeling method was proposed. Firstly, adaptive connection magnetic circuit was built. Additional semi-arc leakage magnetic circuit was added to between the nodes to accurately simulate the magnetic leakage, and equivalent magnetic network model was built and solved. Secondly, a lumped parameter thermal network model was built based on Nusselt number and thermal resistance formula. Finally, the bidirectional coupling of magnetic network model and thermal network model was realized by using iterative correction method according to the magnetic-thermal correlation of the loss model, and the internal stator temperature rise was improved. The finite element and experimental results indicate the rapidity and accuracy of proposed method.
- Subjects
MAGNETIC flux leakage; MAGNETIC circuits; NUSSELT number; THERMAL resistance; THERMAL analysis; PERMANENT magnets; PERMANENT magnet generators
- Publication
Light Industry Machinery, 2023, Vol 41, Issue 5, p67
- ISSN
1005-2895
- Publication type
Article
- DOI
10.3969/j.issn.1005-2895.2023.05.010