본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Renewable energy v.105, 2017년, pp.199 - 208   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

A new linear magnetic gear with adjustable gear ratios and its application for direct-drive wave energy extraction

Li, Wenlong (Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China ) ; Chau, K.T. (Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China ) ; Lee, Christopher H.T. (Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China ) ; Ching, T.W. (Faculty of Science and Technology, University of Macau, Macao, China ) ; Chen, Mu (Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China ) ; Jiang, J.Z. (Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China ) ;
  • 초록  

    Abstract In this paper, a new linear magnetic gear with multiple gear ratios is proposed. Unlike the conventional linear magnetic gears, the proposed one purposely utilizes the aluminum-nickel-cobalt (AlNiCo) permanent magnets (PMs) as the excitation source. Due to the relatively low coercivity, AlNiCo PMs can be magnetized or demagnetized by applying an appropriate DC current pulse into the magnetizing winding. Thus, the pole-pair numbers of PMs on two movers can be varied accordingly so that different gear ratios can be achieved. Firstly, the mathematical modeling of the hysteresis loop of AlNiCo PMs is established. Then, the proposed linear magnetic gear with adjustable gear ratios is presented. Instead of the traditional surface-mounted PM configuration, the proposed machine installs the PMs using the surface-inset and consequent-pole configuration. Hence, the adverse influence during the magnetizing or demagnetizing process can be minimized. Since the magnetizing windings are placed in the movers, no position control is required for the magnetizing or demagnetizing process. By applying finite element analysis, the electromagnetic performances of the proposed linear magnetic gear with adjustable gear ratios are evaluated. Finally, the proposed linear magnetic gear is applied for direct-drive wave energy extraction. Owing to the capability of adjustable gear ratios, the wave energy converter can be operated in resonance with the waves at different sea states so that the maximized power can be captured. Highlights A multiple-gear-ratio linear magnetic gear for wave energy harvesting is proposed. The magnetizing winding for pole-changing are placed in the movers. AlNiCo PM arrangement adopts the surface-inset consequent-pole topology. The control algorithm for pole-changing does not need the position information. The multiple gear ratios can significantly improve the power capture ratio.


  • 주제어

    Permanent magnet .   Linear magnetic gear .   Variable gear ratio .   Direct-drive .   Wave energy.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기