• 제목/요약/키워드: Core Center

검색결과 2,385건 처리시간 0.034초

직결식 세탁기용 BRUSHLESS DC MOTOR (BRUSHLESS DC MOTOR FOR A DIRECT DRIVE WASHING MACHINE)

  • 이진원;김창준;성부현;원종화;이유신
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1996년도 하계학술대회 논문집 A
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    • pp.406-408
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    • 1996
  • This paper describes the BLDC motor which is applicated for a top front loading domestic washing machine. This motor is adopted direct drive washing machine without gear-belt-pulley system. Because gear box is removed, machine volume and noise are reduced. Moreover mechanical troubles in gear box are removed. Realization of variable speed region through of PWM control and high speed is able to efficient washing and spinning.

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Improved Magnetic Properties of Silicon-Iron Alloy Powder Core

  • Lee, Tae-Kyung;Kim, Gu-Hyun;Choi, Gwang-Bo;Jeong, In-Bum;Kim, Kwang-Youn;Jang, Pyung-Woo
    • 한국분말야금학회:학술대회논문집
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    • 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part2
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    • pp.1191-1192
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    • 2006
  • Eventhough Fe-6.5 wt.% Si alloy shows excellent magnetic properties, magnetic components made of the alloy are not totally because of its extremely low ductility. In order to overcome this demerit of alloy, 6.7 wt.% Si alloy powders were produced by gas atomization and then post-processed to form magnetic cores. By doing so, the total core loss could be minimized by reducing both hysteresis and eddy current loss. From our experiments, we were able to achive a core loss of $390mW/cm^3$ at 0.1 T and 50 kHz through proper processes and a permeability $\mu_{eff}$ of 68 at low frequency.

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