Comparison of salient pole and Permanent Magnet Synchronous Machines designed for wind turbines

Kömürgöz Kırış G., Gündoǧdu T.

2012 IEEE Power Electronics and Machines in Wind Applications, PEMWA 2012, Denver, CO, United States Of America, 16 - 18 July 2012 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/pemwa.2012.6316381
  • City: Denver, CO
  • Country: United States Of America
  • Keywords: FEM, Permanent Magnets, Rare-Earth Market, Synchronous Machine Design, Wind Energy
  • Istanbul Technical University Affiliated: Yes

Abstract

The paper presents an analysis and comparison of synchronous electrical machines with salient pole with field winding and those with peripheral winding, presenting important advantages. Chinese export restrictions already reduce the reliability of planning for investments in permanent magnet (PM) wind turbines. Today, the production of PMs consumes the largest proportion of rare earth elements, with 40% of the rare earth-based magnets used for generators and other electrical machines. The cost and availability of NdFeB magnets will likely determine the production rate of PM generators. In this study, a Salient Pole Synchronous Machine (SPSM) and a Permanent Magnet Synchronous Machine (PMSM) are designed in a way that the plate values remain constant. The analysis results clearly indicate that SPSM designs would be attractive to wind power companies in terms of cost. Furthermore, the importance of the design of electrical machines and the determination of criteria are emphasized. © 2012 IEEE.