Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Change of Operating Characteristics of Latching Relay with Temperature

래칭 릴레이의 온도에 따른 동작 특성 변화

  • Ryu, Jae-Man (Department of Electrical Engineering, Inha University) ;
  • Jin, In-Young (Department of Electrical Engineering, Inha University) ;
  • Huh, Chang-Su (Department of Electrical Engineering, Inha University)
  • Received : 2017.05.28
  • Accepted : 2017.06.15
  • Published : 2017.08.01
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Abstract

Electrical relay in an essential part of smart grids, electrical vehicles, and LED lightning systems. Therefore, studying relay reliability is important. Relays using permanent magnet actuators (PMAs), which are energy efficient, are also in the spotlight. However, most of the permanent magnets used in PMAs have a characteristic wherein the magnetic flux decreases as the temperature increases. When the magnetic flux is reduced, the force acting on the actuator is reduced. Therefore, in this study, we measured the decrease in the relay operating speed with permanent magnet reduction due to temperature rise. In addition, changes in the bouncing phenomena due to magnetic flux reduction were analyzed. As a result, the operating speed of the relay has decreased and the bouncing phenomenon has not significantly changed.

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References

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