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Coupled Fluid-Thermal Analysis for Induction Motors with Broken Bars Operating under the Rated Load

Author

Listed:
  • Ying Xie

    (School of Electrical & Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

  • Jinpeng Guo

    (School of Electrical & Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

  • Peng Chen

    (School of Electrical & Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

  • Zhiwei Li

    (School of Electrical & Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

Abstract

Thermal stress of the rotor in a squirrel cage induction motor is generated due to the temperature rise, it is also one of the factors causing the broken bar fault because the structure of the rotor would be destroyed if the stress of the rotor bars exceed the strength limit. The coupled fluid-thermal analysis for the induction motor with healthy and broken bar rotors is performed in this paper. Much concern has been committed to establishment of the fluid model on the basis of computational fluid dynamic (CFD) theory. The heat field of the prototypes is analysed so that the effect of the asymmetrical rotor on the motor heat performance can be investigated in depth. Eventually, the efficiency of the presented model and method, for the totally enclosed fan cooled (TEFC) induction motor, can be verified through experimental results. In addition, this paper reports a quantitative analysis of the heat flux distribution of the fault rotor, and the heat flux density of the bars is investigated in detail. Then, the part most likely to break in the rotor as a result of the thermal load is identified.

Suggested Citation

  • Ying Xie & Jinpeng Guo & Peng Chen & Zhiwei Li, 2018. "Coupled Fluid-Thermal Analysis for Induction Motors with Broken Bars Operating under the Rated Load," Energies, MDPI, vol. 11(8), pages 1-17, August.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:8:p:2024-:d:161862
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    Citations

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    Cited by:

    1. Junqing Li & Luo Wang, 2019. "Calculation and Analysis of Rotor Thermal Static Field for Inter-Turn Short Circuit of Large Hydro-Generator Excitation Winding," Energies, MDPI, vol. 12(7), pages 1-19, April.
    2. Minghan Ma & Yonggang Li & Yucai Wu & Chenchen Dong, 2018. "Multifield Calculation and Analysis of Excitation Winding Interturn Short Circuit Fault in Turbo-Generator," Energies, MDPI, vol. 11(10), pages 1-16, October.
    3. Jan Mróz & Wojciech Poprawski, 2019. "Improvement of the Thermal and Mechanical Strength of the Starting Cage of Double-Cage Induction Motors," Energies, MDPI, vol. 12(23), pages 1-13, November.
    4. Arkadiusz Duda & Maciej Sułowicz, 2020. "A New Effective Method of Induction Machine Condition Assessment Based on Zero-Sequence Voltage (ZSV) Symptoms," Energies, MDPI, vol. 13(14), pages 1-26, July.

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