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A novel method to avoid degradation due to demagnetization of PM linear generators for oceanic wave energy extraction

Conference Paper


Abstract


  • Demagnetization is one of the noticeable problems in almost every permanent magnet linear generator (PMLG) for oceanic wave energy conversion. To avoid the degradation of electrical power generation capability, a PMLG with a new feature of variable air gap length is proposed in this paper. To verify the effectiveness of the proposed method, a PMLG has been designed which is simulated for both the fixed and variable air gaps. The finite element analysis is performed for simulation for analysis of the PMLG with the conventional and the proposed methods by using the software package ANSYS/Ansoft. The voltage, current, power, magnetic flux density, and force components of the PMLG are analyzed and discussed. The simulation results show that the new method can effectively avoid the demagnetization problem.

UOW Authors


  •   Farrok, Omar (external author)
  •   Islam, Md Rabiul
  •   Sheikh, Md Rafiqul Islam (external author)
  •   Guo, Youguang (external author)
  •   Zhu, Jianguo G. (external author)
  •   Lei, Gang (external author)

Publication Date


  • 2017

Citation


  • O. Farrok, M. Islam, M. Sheikh, Y. Guo, J. Zhu & G. Lei, "A novel method to avoid degradation due to demagnetization of PM linear generators for oceanic wave energy extraction," in 2017 20th International Conference on Electrical Machines and Systems (ICEMS), 2017, pp. 1-6.

Scopus Eid


  • 2-s2.0-85034662392

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1094

Start Page


  • 1

End Page


  • 6

Place Of Publication


  • United States

Abstract


  • Demagnetization is one of the noticeable problems in almost every permanent magnet linear generator (PMLG) for oceanic wave energy conversion. To avoid the degradation of electrical power generation capability, a PMLG with a new feature of variable air gap length is proposed in this paper. To verify the effectiveness of the proposed method, a PMLG has been designed which is simulated for both the fixed and variable air gaps. The finite element analysis is performed for simulation for analysis of the PMLG with the conventional and the proposed methods by using the software package ANSYS/Ansoft. The voltage, current, power, magnetic flux density, and force components of the PMLG are analyzed and discussed. The simulation results show that the new method can effectively avoid the demagnetization problem.

UOW Authors


  •   Farrok, Omar (external author)
  •   Islam, Md Rabiul
  •   Sheikh, Md Rafiqul Islam (external author)
  •   Guo, Youguang (external author)
  •   Zhu, Jianguo G. (external author)
  •   Lei, Gang (external author)

Publication Date


  • 2017

Citation


  • O. Farrok, M. Islam, M. Sheikh, Y. Guo, J. Zhu & G. Lei, "A novel method to avoid degradation due to demagnetization of PM linear generators for oceanic wave energy extraction," in 2017 20th International Conference on Electrical Machines and Systems (ICEMS), 2017, pp. 1-6.

Scopus Eid


  • 2-s2.0-85034662392

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1094

Start Page


  • 1

End Page


  • 6

Place Of Publication


  • United States