TY - JOUR
T1 - Development of 72/96-pole rare-earth free permanent magnet reluctance generator for small-scale renewable power generation
AU - Nakamura, Kenji
AU - Sunan, Erkan
AU - Ichinokura, Osamu
N1 - Funding Information:
This work was supported by JSPS Grant-in-Aid for Young Scientists (A) (22686028).
Publisher Copyright:
© 2014 The Institute of Electrical Engineers of Japan.
PY - 2014
Y1 - 2014
N2 - This paper discusses a super-multipolar permanent magnet reluctance generator (PMRG) for small-scale renewable power generation. The PMRG has 72 stator poles and 96 rotor poles in order to be directly connected to the turbine without a gear box. The designed PMRG has a rated power of over 1.0 kW at 100 rpm. The PMRG has two features to reduce torque ripple; a two-stacked structure where one rotor is shifted by an electrical angle of 180 degrees from the other rotor; and chamfered rotor pole-tips so that the torque waveform consists of only odd harmonics. This structure drastically reduces the torque ripple of the PMRG. The shape of the rotor pole-tips was first optimized by the two-dimensional finite element method (2D-FEM) coupled with a general-purpose optimization program. Next, the load characteristics of the PMRG obtained from 3D-FEM were considered. Finally, the characteristics of the developed 72/96-pole PMRG were measured.
AB - This paper discusses a super-multipolar permanent magnet reluctance generator (PMRG) for small-scale renewable power generation. The PMRG has 72 stator poles and 96 rotor poles in order to be directly connected to the turbine without a gear box. The designed PMRG has a rated power of over 1.0 kW at 100 rpm. The PMRG has two features to reduce torque ripple; a two-stacked structure where one rotor is shifted by an electrical angle of 180 degrees from the other rotor; and chamfered rotor pole-tips so that the torque waveform consists of only odd harmonics. This structure drastically reduces the torque ripple of the PMRG. The shape of the rotor pole-tips was first optimized by the two-dimensional finite element method (2D-FEM) coupled with a general-purpose optimization program. Next, the load characteristics of the PMRG obtained from 3D-FEM were considered. Finally, the characteristics of the developed 72/96-pole PMRG were measured.
KW - Chamfered pole-tips
KW - Permanent magnet reluctance generator (PMRG)
KW - Small-scale renewable power generation
KW - Torque ripple reduction
KW - Two-stacked structure
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U2 - 10.1541/ieejjia.3.41
DO - 10.1541/ieejjia.3.41
M3 - Article
AN - SCOPUS:85018394139
SN - 2187-1094
VL - 3
SP - 41
EP - 46
JO - IEEJ Journal of Industry Applications
JF - IEEJ Journal of Industry Applications
IS - 1
ER -
