Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2010.2379.2386ZabihinejadA.IranianM.E.1220101020This study discussed the development of a high power Radial flux direct-drive PM generator for wind applications. A low-speed radial-flux permanent-electrical with new magnet (PM) generator topology was built and tested. The designed, optimized and constructed. This study presents the design of a 20 kW permanent magnet generator using Neodymium-Iron-Boron. The Finite Element Technique (FET) is used for detailed characteristics and final adjustments. The design was carried out with high-energy NdFeB built and tested. The ant colony algorithm is used to optimize machine structure and to achieve high power density and efficiency. The generator operation is investigated in both simulation and implementation. The simulation results show that the optimized structure have higher efficiency in comparison with other optimization methods such as genetic algorithm. The great agreement between simulation and implementation results proves the validity of this generator structure.]]>Atallah, K., Z.Q. Zhu, D. Howe and T.S. Brich,1998Boldea, I. and S.A. Nasar,1987Chen, J., C.V. Nayar and L. Xu,2000Di Caro, G. and M. Dorigo,1998Dorigo, M., V. Maniezzo and A. Colorni,1991Dorigo, M.,1992Dorigo, M., V. Maniezzo and A. Colorni,1996Gieras, J.F. and I.A. Gieras,2002Gieras, J.F., R. Wang and M.J. Kamper,2004Hughes, A. and T.J. Miller,1997Joorabian, M. and A.N. Zabihinejad,2009Kamper, M.J. and F.S. van der Merwe and S. Williamson,1996Kang, D.H., P. Curiac and J. Lee,2000Kessinger, R.L. and S. Robinson,1997Kessinger, R.L., P.A. Stahura, P.E. Receveur and K.D. Dockstader,1998Malekian, K. and J.M. Monfared,2007Mirzayee, M., H. Bahrami, A. Zabihi and M. Joorabian,2005Muljadi, E., C.P. Butterfield and Y.H. Wan,1999Stutzle, T. and H.H. Hoos,1998Tsekouras, G., S. Kiartzis, A.G. Kladas and J.A. Tegopoulos,2001