Super-multipolar permanent magnet reluctance generator designed for small-scale renewable energy generation

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
Pages489-494
Number of pages6
DOIs
Publication statusPublished - 2012 Dec 14
Event2012 20th International Conference on Electrical Machines, ICEM 2012 - Marseille, France
Duration: 2012 Sep 22012 Sep 5

Publication series

NameProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012

Other

Other2012 20th International Conference on Electrical Machines, ICEM 2012
CountryFrance
CityMarseille
Period12/9/212/9/5

Keywords

  • Permanent magnet reluctance generator (PMRG)
  • small-scale renewable energy generation
  • torque ripple reduction
  • two-stacked structure

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

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