Design and Analysis of a Linear Hybrid Excitation Flux-Switching Generator for Direct Drive Wave Energy Converters | Zendy

Lei Huang | Zendy; Minqiang Hu | Zendy; Jing Liu | Zendy; Chunyuan Liu | Zendy; Weibo Zhong | Zendy

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Design and Analysis of a Linear Hybrid Excitation Flux-Switching Generator for Direct Drive Wave Energy Converters

Author(s) -

Lei Huang,

Minqiang Hu,

Jing Liu,

Chunyuan Liu,

Weibo Zhong

Publication year - 2013

Publication title -

advances in mechanical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 40

eISSN - 1687-8140

pISSN - 1687-8132

DOI - 10.1155/2013/963093

Subject(s) - generator (circuit theory) , converters , linear congruential generator , finite element method , electromagnetic coil , vernier scale , excitation , switched reluctance motor , shunt generator , computer science , stator , control theory (sociology) , cogging torque , engineering , topology (electrical circuits) , voltage , electrical engineering , magnet , power (physics) , physics , structural engineering , rotor (electric) , armature (electrical engineering) , control (management) , quantum mechanics , astronomy , artificial intelligence

Linear generators have the advantage of a simple structure of the secondary, which is suitable for the application of wave energy conversion. Based on the vernier hybrid machines (VHMs), widely used for direct drive wave energy converters, this paper proposes a novel hybrid excitation flux-switching generator (LHEFSG), which can effectively improve the performance of this kind of generators. DC hybrid excitation windings and multitooth structure were used in the proposed generator to increase the magnetic energy and overcome the disadvantages of easily irreversible demagnetization of VHMs. Firstly, the operation principle and structure of the proposed generator are introduced. Secondly, by using the finite element method, the no-load performance of the proposed generator is analyzed and composed with ones of conventional VHM. In addition, the on-load performance of the proposed generator is obtained by finite element analysis (FEA). A dislocation of pole alignments method is implemented to reduce the cogging force. Lastly, a prototype of the linear flux-switching generator is used to verify the correctness of FEA results. All the results validate that the proposed generator has better performance than its counterparts

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