Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2009.04b
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- Pages.38-40
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- 2009
Design of Permanent Magnet Type Wind Power Generators for Cogging Torque Reduction with Optimum Pole Arc Pitch Ratio
코깅토크 저감을 위한 최적 극호비를 갖는 영구자석형 풍력발전기의 설계
- Jang, Seok-Myeong (Chungnam National University) ;
- Kim, Jin-Soon (Chungnam National University) ;
- Ko, Kyoung-Jin (Chungnam National University) ;
- Choi, Jang-Young (Halla Climate Control) ;
- Yoon, Gi-Gab (Korea Electric Power Research Institute)
- Published : 2009.04.23
Abstract
In order to achieve a gearless construction of the wind energy conversion system(WECS), a low-speed generator should be used. Of the various candidate machine types, radial-field, multi-pole, permanent magnet, synchronous machines may be used for low-speed applications. So, this paper deals with the design of direct-coupled, multi-pole radial field machines with permanent magnet(PM) excitation for wind power applications for cogging torque reduction through the determination of optimum pole arc/pitch ratio. On the basis of an equivalent magnetic circuit method(EMCM) and a space harmonic method(SHM), an initial design is performed considering restricted conditions. And then, a detailed design is made using a non-linear finite element analyses(FEA). Finally, test results concerning generating characteristics are given to confirm the validation of the design.
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