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A modified electromagnetic force calculation method has high accuracy and applicability for EMS maglev vehicle

Yang Feng1, Chunfa Zhao1, Zhan Bai1

  • 1State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China.

ISA Transactions
|January 22, 2023
PubMed
Summary

A new magnetic resistance modification (MRM) method improves electromagnetic force calculations by accounting for non-linear magnetization and magnetic resistance. This enhances the accuracy of dynamics simulations for electromagnetic suspension (EMS) maglev vehicles.

Keywords:
Maglev trainMagnet/rail interactionMagnetic circuit analysisNonlinear magnetization characteristicsVehicle system dynamics simulation

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Area of Science:

  • Electromagnetics
  • Mechanical Engineering
  • Materials Science

Background:

  • Traditional electromagnetic force calculations neglect non-linear magnetization and magnetic resistance, leading to significant errors, especially in off-rated conditions.
  • These inaccuracies cause dynamics simulations to diverge from real-world performance, limiting the reliability of electromagnetic suspension (EMS) maglev systems.

Purpose of the Study:

  • To develop a more accurate analytical method for calculating electromagnetic forces in electromagnets.
  • To enhance the precision of dynamics simulations for electromagnetic suspension (EMS) maglev vehicles.

Main Methods:

  • Derived an analytical formula for electromagnetic force incorporating full circuit magnetic resistance modification and non-linear magnetization characteristics.
  • Developed the magnetic resistance modification (MRM) method, integrating finite element simulation analysis for calculating electromagnetic levitation and guiding forces.

Main Results:

  • The MRM method significantly improves the accuracy of electromagnetic force calculations compared to traditional methods.
  • The enhanced accuracy of the MRM method leads to more reliable dynamics simulations for EMS maglev vehicles.

Conclusions:

  • The proposed MRM method offers a substantial improvement in electromagnetic force calculation accuracy.
  • This method provides a more realistic basis for dynamics simulations in EMS maglev vehicle design and operation.