Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Design and Analysis of a New Hybrid Electromagnetic Levitation System

  • Received : 2018.09.28
  • Accepted : 2019.01.03
  • Published : 2019.01.31
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Abstract

A new permanent magnet biased hybrid maglev actuator is developed. Compared to the classical hybrid maglev actuators, the new maglev has unique flux paths such that bias fluxes are separated with control flux paths. The control flux paths have minimum reluctances only developed by air gaps, so the currents to produce control fluxes can be minimized. The consumed power to operate this maglev system can also be minimized. The gravity load can be compensated with the static magnetic forces developed by the permanent magnet bias fluxes while external disturbances are controlled with the bidirectional AC magnetic forces developed by control fluxes by currents. 1-D circuit model is developed for this model such that the flux densities and magnetic forces are extensively analyzed. 3-D finite element model is also developed to analyze the performances of the maglev actuator.

Keywords

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Fig. 1 U-shaped Hybrid Electromagnetic Suspensions

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Fig. 2 A New Hybrid Maglev Actuator Model

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Fig. 3 Equivalent Magnetic Circuit

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Fig. 4 1D flux density simulation with AC currents.

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Fig. 5 1D magnetic force simulation with AC currents.

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Fig. 6 A New Maglev 3D model

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Fig. 7 Bias flux density distribution withi i= 0 A

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Fig. 8 Flux density distribution with d=0.018m , i=0A   

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Fig. 9 The static magnetic forces and air gap flux densities with d

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Fig. 10 Flux density distribution with i= 5A

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Fig. 12 Magnetic Forces with i=5sinΩt A 

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Fig. 11 Flux density distribution with i=-5A

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Fig. 13 A Classical Hybrid Maglev 3D model

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Fig. 14 Flux density distribution with i=0A

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Fig. 16 Flux density distribution with i=-5A

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Fig. 15 Flux density distribution with i=5A

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Fig. 17 The magnetic forces with i=5sinΩt A 

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