Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Measurements of Magnetic Properties of Electromagnetic Actuator in High-Temperature Environment

  • Noh, M. (Chungnam National University) ;
  • Gi, M.J. (Chungnam National University) ;
  • Kim, D. (Chungnam National University) ;
  • Park, Y.W. (Chungnam National University) ;
  • Lee, J. (Korea Atomic Energy Res. Inst.) ;
  • Kim, J. (Korea Atomic Energy Res. Inst.)
  • Received : 2015.01.02
  • Accepted : 2015.03.16
  • Published : 2015.03.31
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Abstract

Electromagnetic actuators are versatile and able to meet demanding requirements, such as operation in very low or very high temperatures. When the actuator is used in a high-temperature environment up to $500^{\circ}C$, we need to know how the force-producing capability of the actuator is affected by the operating temperature. Specifically, it is necessary to know the temperature-dependence of magnetic properties that determine the mechanical forces. In this paper, we measure the changes in magnetic properties of SUS410 material in high-temperature environment. We also devise a novel signal processing technique to remove the integration drift. At the field strength of 18,000 A/m, we found that the flux density at $500^{\circ}C$ is decreased by 26%, compared to the result at room temperature. Therefore, the actuator must be sized appropriately, if it is to operate in high-temperature settings.

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References

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