Open AccessAxial‐flux permanent‐magnet synchronous generator with coreless armature and non‐integral coil–pole ratio
Author(s) -
Wu Danqi,
Yang Junhua,
Chan Tze Fun,
Lai Chun Sing,
Li Xuecong,
Yan Baiping,
Lai Loi Lei,
Wang Dongxiao,
Gao Xiaodan,
Meng Ke
Publication year - 2019
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.2018.5311
Subject(s) - armature (electrical engineering) , shunt generator , electromagnetic coil , permanent magnet synchronous generator , magnet , torque ripple , ripple , electrical engineering , field coil , finite element method , physics , engineering , voltage , mechanics , control theory (sociology) , mechanical engineering , structural engineering , computer science , direct torque control , induction motor , control (management) , artificial intelligence
This article presents a study on an axial‐flux permanent‐magnet synchronous generator (AFPMSG) with a double‐sided rotor, coreless armature. The armature winding consists of non‐overlapping concentrated coils and has a non‐integral coil–pole ratio. It is shown that, with an appropriate choice of armature coil number to pole number, the fundamental winding factor of the AFPMSG can be made close to that of a full‐pitched integral slot winding. The field distribution and load performance are computed for a prototype machine based on a two‐dimensional, time‐stepping finite element method. A study of the armature reaction effect of the coreless armature winding and the origin of torque ripple is also carried out. The computed voltage and current waveforms, as well as the load characteristics, are verified by practical experiments.