TY - GEN
T1 - Super-multipolar permanent magnet reluctance generator designed for small-scale renewable energy generation
AU - Nakamura, K.
AU - Ichinokura, O.
PY - 2012
Y1 - 2012
N2 - This paper describes a super-multipolar permanent magnet reluctance generator (PMRG) for small-scale renewable energy generation. The numbers of stator and rotor poles of the PMRG are 72 and 96 respectively, in order to be directly connected to the turbine without a gear box. The rated power of the designed PMRG is about 1.0 kW at 100 rpm. The PMRG has two features for reducing torque ripple; the first one is a two-stacked structure, namely, one rotor is shifted by 180 deg. in electrical angle from the other rotor; the second one is that the rotor pole-tips are cut off so that the torque waveform consists of only odd-harmonics. In such a structure, the torque ripple of the PMRG can be reduced drastically. In this paper, first, the shape of rotor pole-tips is optimized by 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 are indicated. Finally, the measured characteristics of the developed 72/96-pole PMRG are described.
AB - This paper describes a super-multipolar permanent magnet reluctance generator (PMRG) for small-scale renewable energy generation. The numbers of stator and rotor poles of the PMRG are 72 and 96 respectively, in order to be directly connected to the turbine without a gear box. The rated power of the designed PMRG is about 1.0 kW at 100 rpm. The PMRG has two features for reducing torque ripple; the first one is a two-stacked structure, namely, one rotor is shifted by 180 deg. in electrical angle from the other rotor; the second one is that the rotor pole-tips are cut off so that the torque waveform consists of only odd-harmonics. In such a structure, the torque ripple of the PMRG can be reduced drastically. In this paper, first, the shape of rotor pole-tips is optimized by 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 are indicated. Finally, the measured characteristics of the developed 72/96-pole PMRG are described.
KW - Permanent magnet reluctance generator (PMRG)
KW - small-scale renewable energy generation
KW - torque ripple reduction
KW - two-stacked structure
UR - http://www.scopus.com/inward/record.url?scp=84870835465&partnerID=8YFLogxK
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U2 - 10.1109/ICElMach.2012.6351842
DO - 10.1109/ICElMach.2012.6351842
M3 - Conference contribution
AN - SCOPUS:84870835465
SN - 9781467301428
T3 - Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
SP - 489
EP - 494
BT - Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
T2 - 2012 20th International Conference on Electrical Machines, ICEM 2012
Y2 - 2 September 2012 through 5 September 2012
ER -
