Open AccessResearch on a permanent magnet tubular linear generator for direct drive wave energy conversion
Author(s) -
Liu Chunyuan,
Yu Haitao,
Hu Minqiang,
Liu Qiang,
Zhou Shigui,
Huang Lei
Publication year - 2014
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2012.0364
Subject(s) - magnet , permanent magnet synchronous generator , generator (circuit theory) , air gap (plumbing) , finite element method , energy transformation , magnetic flux , linear congruential generator , magnetization , power density , halbach array , physics , power (physics) , mechanical engineering , materials science , electrical engineering , mechanics , engineering , magnetic field , structural engineering , quantum mechanics , composite material , thermodynamics
An external tubular linear permanent magnet generator (ETLPMG) is proposed for direct drive wave energy conversion. ETLPMG with quasi‐Halbach array is larger in the air gap magnetic flux density than the internal and radial magnetisation one. An assistant tooth and fractional slot are implemented to decrease the detent force. The power density of ETLPMG is about 7–8 times for that of the internal one and the efficiency reached 90.03% at 18 Ω condition. The characteristics of the ETLPMG are analysed with a finite element analysis. Finally, a prototype is manufactured to verify the simulation results by some experiment tests.