An Accurate Magnetic-thermal Coupling Model for Thermal Decay Analysis of Eddy Current Brakes
ID:251 View Protection:ATTENDEE Updated Time:2021-12-09 10:36:18 Hits:628 Oral Presentation

Start Time:2021-12-16 09:00(Asia/Shanghai)

Duration:15min

Session:G Electric Machine Design and Control » G1Session 17

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Abstract
The torque decay is inevitable when Eddy current brakes (ECB) is continuously braking, which involves the interaction between electromagnetic field and temperature field. In this paper, based on the traditional magneto-thermal coupling model, a magnetic-thermal coupling model considering current decline (MCM-CD) is proposed to accurately calculate the torque decline curve. Through 3D electromagnetic field numerical analysis, the rule of heat generation rate of stator and coil was obtained. The temperature distributions of the stator and coil are calculated by the finite difference method, and the average temperature is used to modify the conductivity, permeability and current in the electromagnetic field model. The simulation and experimental results show that the MCM-CD can accurately calculate the thermal decline of the ECB. The proportion of torque decline caused by three factors is analyzed, among which the conductivity and current have a greater effect on the torque decline.
Keywords
Magnetic-thermal coupling model,eddy current brake,thermal decay,current decay,experiment
Speaker
Zhiwei Gao
Beijing University of Technology

Submission Author
Zhiwei Gao Beijing University of Technology
Desheng Li Beijing University of Technology
Benzhen Guo Beijing University of Technology
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  • Conference Date

    Jul 11

    2023

    to

    Aug 18

    2023

  • Nov 10 2021

    Draft paper submission deadline

  • Dec 10 2021

    Registration deadline

  • Dec 11 2021

    Contribution Submission Deadline

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IEEE IAS
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IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST