volume | PIER Journals

Abstract

This paper presents a double-stator permanent magnet generator (DSPMG) integrated with a novel magnetic gear structure which is proposed to be used as a direct drive generator for low speed applications. Torque transmission is based on three rotors consisting of prime permanent magnet poles on the middle rotor and field permanent magnet poles on the inner and outer rotors, respectively. The proposed machine combines the function of a triple rotor magnetic gear and electrical power generator. The operating principle of the generator is discussed, and its performance characteristics are analyzed using 2-dimensional finite-element method (2D-FEM). Analysis results about its magnetic gear ratio, transmission torque, cogging torque and electrical power performance are reported. The 2-D finite element analysis results verify the proposed generator design.

1. Li, X., K.-T. Chau, M. Cheng, and W. Hua, "Comparison of magnetic-geared permanent magnet machines," Progress In Electromagnetics Research, Vol. 133, 177-198, 2013. Google Scholar

2. Rens, J., K. Atallah, S. Calverley, and D. Howe, "A novel magnetic harmonic gear," IEEE Transactions on Industry Applications, Vol. 46, No. 1, 206-212, 2010. Google Scholar

3. Jian, L. and K. Chau, "A coaxial magnetic gear with halbach permanent-magnet arrays," IEEE Transactions on Energy Conversion, Vol. 25, No. 2, 319-328, 2010. Google Scholar

4. Zhang, X., X. Liu, C. Wang, and Z. Chen, "Analysis and design optimization of a coaxial surface-mounted permanent-magnet magnetic gear," Energies, Vol. 7, No. 12, 8535-8553, 2014. Google Scholar

5. Atallah, K., J. Wang, S. Mezani, and D. Howe, "A novel high-performance linear magnetic gear," IEEJ Trans. IA, Vol. 126, No. 10, 1352-1356, 2006. Google Scholar

6. Mezani, S., K. Atallah, and D. Howe, "A high-performance axial-field magnetic gear," J. Appl. Phys., Vol. 99, No. 8, 08R303, 2006. Google Scholar

7. Acharya, V., J. Bird, and M. Calvin, "A flux focusing axial magnetic gear," IEEE Trans. Magn., Vol. 49, No. 7, 4092-4095, 2013. Google Scholar

8. Jorgensen, F., T. Andersen, and P. Rasmussen, "The cycloid permanent magnetic gear," IEEE Transactions on Industry Applications, Vol. 44, No. 6, 1659-1665, 2008. Google Scholar

9. Niguchi, N. and K. Hirata, "Transmission torque analysis of a novel magnetic planetary gear employing 3-D FEM," IEEE Trans. Magn., Vol. 48, No. 2, 1043-1046, 2012. Google Scholar

10. Niguchi, N. and K. Hirata, "Cogging torque analysis of magnetic gear," IEEE Trans. Ind. Electron., Vol. 59, No. 5, 2189-2197, 2012. Google Scholar

11. Tsai, M. and L. Ku, "3-D printing-based design of axial flux magnetic gear for high torque density," IEEE Trans. Magn., Vol. 51, No. 11, 1-4, 2015. Google Scholar

12. Uppalapati, K., W. Bomela, J. Bird, M. Calvin, and J. Wright, "Experimental evaluation of low-speed flux-focusing magnetic gearboxes," IEEE Transactions on Industry Applications, Vol. 50, No. 6, 3637-3643, 2014. Google Scholar

13. Holm, R., N. Berg, M. Walkusch, P. Rasmussen, and R. Hansen, "Design of a magnetic lead screw for wave energy conversion," IEEE Transactions on Industry Applications, Vol. 49, No. 6, 2699-2708, 2013. Google Scholar

14. Jing, L., L. Liu, M. Xiong, and D. Feng, "Parameters analysis and optimization design for a concentric magnetic gear based on sinusoidal magnetizations," IEEE Trans. Appl. Supercond., Vol. 24, No. 5, 1-5, 2014. Google Scholar

15. Huang, C.-C., M.-C. Tsai, D. Dorrell, and B.-J. Lin, "Development of a magnetic planetary gearbox," IEEE Trans. Magn., Vol. 44, No. 3, 403-412, 2008. Google Scholar

16. Chen, Y., W. Fu, S. Ho, and H. Liu, "A quantitative comparison analysis of radial-flux, transverse-flux, and axial-flux magnetic gears," IEEE Trans. Magn., Vol. 50, No. 11, 1-4, 2014. Google Scholar

17. Frandsen, T., L. Mathe, N. Berg, R. Holm, T. Matzen, P. Rasmussen, and K. Jensen, "Motor integrated permanent magnet gear in a battery electrical vehicle," IEEE Transactions on Industry Applications, Vol. 51, No. 2, 1516-1525, 2015. Google Scholar

18. Liu, C.-T., H.-Y. Chung, and C.-C. Hwang, "Design assessments of a magnetic-geared double-rotor permanent magnet generator," IEEE Transactions on Magnetics, Vol. 50, No. 1, 1-4, 2014. Google Scholar

19. Liu, C., K. T. Chau, and Z. Zhang, "Novel design of double-stator single-rotor magnetic-geared machines," IEEE Transactions on Magnetics, Vol. 48, No. 11, 4180-4183, 2012. Google Scholar

20. Atallah, K., S. D. Calverley, and D. Howe, "Design, analysis and realisation of a high performance magnetic gear," IEE Proc. - Electr. Power Appl., Vol. 151, 135-143, Mar. 2004. Google Scholar

21. Norhisam, M., S. Ridzuan, R. Firdaus, C. Aravind, H. Wakiwaka, and M. Nirei, "Comparative evaluation on power-speed density of portable permanent magnet generators for agricultural application," Progress In Electromagnetics Research, Vol. 129, 345-363, 2012. Google Scholar

22. Jian, L., K. Chau, and J. Jiang, "A magnetic-geared outer-rotor permanent-magnet brushless machine for wind power generation," IEEE Transactions on Industry Applications, Vol. 45, No. 3, 954-962, 2009. Google Scholar

Dr. Shehu Salihu Mustafa

Prof. Norhisam Misron

Dr. Norman Mariun

Dr. Mohammad Lutfi Othman

Dr. Tsuyoshi Hanamoto