Efficiency estimation for permanent magnets of synchronous wind generators

A. Serebryakov 1 , N. Levin 1 , A. Sokolov 1 ,  and E. Kamolins 1
  • 1 Riga Technical University 1 Kalku Str., Riga, LV-1658, LATVIA

Abstract

Application of wind generators opens wide possibilities for raising the efficiency of low- and medium-power wind generators (WGs). The mass of generators in the proposed version is smaller, their reliability higher, while maintenance costs are lower. At the same time, the use of high-energy permanent magnets in generators of enhanced power comes up against some obstacles, which can be overcome through proper orientation of magnetization at creation of a magnetic field in the airgap of electrical machine. In this regard, it might be preferable to use magnets with indirect action on the airgap instead of those with direct action. A convincing example of the former variant is a generator with tangentially oriented magnetization of permanent magnets. In the work, an attempt is done to prove the advantages of such installation in modern low- and medium-power WGs

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