Journal of the Korean Magnetics Society (한국자기학회지)

The Korean Magnetics Society (한국자기학회)
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Characteristic Analysis for the Reduction Detent Force of Double-sided Slotted Type Permanent Magnet Linear Generator for Wave Energy Conversion

파력에너지 변환용 양측식 슬롯티드 타입 선형 발전기의 디텐트력 저감을 위한 특성해석

  • Seo, Sung-Won (Department of Electrical Engineering, Chungnam National University) ;
  • Choi, Jang-Young (Department of Electrical Engineering, Chungnam National University) ;
  • Koo, Min-Mo (Department of Electrical Engineering, Chungnam National University) ;
  • Park, Hyung-Il (Department of Electrical Engineering, Chungnam National University) ;
  • Hong, Keyyong (Offshore Plant Research Division, Korea Research Institute of Ships & Ocean Engineering) ;
  • Kim, Kyong-Hwan (Offshore Plant Research Division, Korea Research Institute of Ships & Ocean Engineering)
  • Received : 2016.01.22
  • Accepted : 2016.02.15
  • Published : 2016.02.29
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Abstract

This study considered the reduction of the detent force of a permanent magnet linear synchronous generator (PMLSG). The PMLSG has a relatively large magnetic air gap. Thus, a slotted type of stator structure is generally employed. Furthermore, the detent force, which is caused by energy imbalances owing to the interaction between tooth-slot structures and the permanent magnets (PMs), must be minimized for start-up operation. Therefore, in this paper, the methods of auxiliary teeth and a notch in the teeth are applied to reduce the detent force.

본 논문은 파력에너지 변환용 양측식 슬롯티드 타입 선형 발전기의 디텐트력 저감을 위한 방법을 제시하였다. 양측식 선형 발전기는 비교적 큰 공극을 갖는다. 그렇기 때문에 일반적으로 선형기는 슬롯 구조를 갖는다. 이때의 디텐트력은 선형 발전기의 치/슬롯과 영구자석 사이에 발생하는 힘으로 불필요한 에너지원으로 작용한다. 따라서, 본 논문에서는 슬롯구조를 갖는 선형 기기의 디텐트력을 줄이기 위한 세가지 방법인 보조치, 노치적용을 제시하고 유한요소해석법을 이용하여 본 연구의 타당성을 입증하였다.

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References

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