volume | PIER Journals

Abstract

This paper gives an overview of various electric machines for application to renewable energy harvesting, and reveals the corresponding challenges and research opportunities. After introducing various renewable energies and electric machines, the concept of renewable energy machines is coined. Then, the existing machines, including the DC, induction and synchronous types, for renewable energy harvesting are challenged. Consequently, research opportunities of advanced machines, including the stator-permanent magnet (PM), direct-drive PM and magnetless types, are elaborated. Finally, both near-term and long-term renewable energy machines are identified especially the emerging stator-PM, vernier PM and stator doubly fed doubly salient types.

1. Esram, T. and P. L. Chapman, "Comparison of photovoltaic array maximum power point tracking techniques," IEEE Transactions on Energy Conversion, Vol. 22, No. 2, 439-449, 2007.
doi:10.1109/TEC.2006.874230

2. Yu, C. and K. T. Chau, "Thermoelectric automotive waste heat energy recovery using maximum power point tracking," Energy Conversion and Management, Vol. 50, No. 6, 1506-1512, 2009.
doi:10.1016/j.enconman.2009.02.015

3. Al-Majed, S. I. and T. Fujigaki, "Wind power generation: An overview," International Symposium on Modern Electric Power Systems, 1-6, 2010.

4. Mohamed, K. H., N. C. Sahoo, and T. B. Ibrahim, "A survey of technologies used in wave energy conversion systems," International Conference on Energy, Automation, and Signal, 1-6, 2011.
doi:10.1109/ICEAS.2011.6147174

5. Fu, S. and J. Zhong, "Hydropower in China," IEEE Power and Energy Magazine, Vol. 6, No. 4, 47-51, 2008.
doi:10.1109/MPE.2008.923982

6. Denny, E., "The economics of tidal energy," Energy Policy, Vol. 37, No. 5, 1914-1924, 2009.
doi:10.1016/j.enpol.2009.01.009

7. Cabeza, L. F., C. Sole, A. Castell, E. Oro, and A. Gil, "Review of solar thermal storage techniques and associated heat transfer technologies," IEEE Proceedings, Vol. 100, No. 2, 525-538, 2012.
doi:10.1109/JPROC.2011.2157883

8. Barbier "Geothermal energy technology and current status: An overview," Renewable and Sustainable Energy Reviews, Vol. 6, No. 1-2, 3-65, 2002.
doi:10.1016/S1364-0321(02)00002-3

9. Loeser, M. and M. A. Redfern, "Overview of biomass conversion and generation technologies," International Universities Power Engineering Conference, 1-4, 2008.
doi:10.1109/UPEC.2008.4651566

10. Bollen, M. H. and F. Hassan, Integration of Distributed Generation in the Power System, Wiley, IEEE Press, 2011.

11. Zhu, Z. Q., Y. S. Chen, and D. Howe, "On-line optimal field weakening control of permanent magnet brushless AC drives," IEEE Transactions on Industry Applications, Vol. 36, No. 6, 1661-1668, 2000.
doi:10.1109/28.887219

12. Wang, Y., K. T. Chau, C. C. Chan, and J. Z. Jiang, "Design and analysis of a new multiphase polygonal-winding permanentmagnet brushless DC machine," IEEE Transactions on Magnetics, Vol. 38, No. 5, 3258-3260, 2002.
doi:10.1109/TMAG.2002.802128

13. Liu, C., K. T. Chau, J. Z. Jiang, and S. Niu, "Comparison of stator-permanent-magnet brushless machines," IEEE Transactions on Magnetics, Vol. 44, No. 11, 4405-4408, 2008.
doi:10.1109/TMAG.2008.2002632

14. Cheng, M., K. T. Chau, and C. C. Chan, "Design and analysis of a new doubly salient permanent magnet motor," IEEE Transactions on Magnetics, Vol. 37, No. 4, 3012-3020, 2001.
doi:10.1109/20.947054

15. Chau, K. T., Q. Sun, Y. Fan, and M. Cheng, "Torque ripple minimization of doubly salient permanent magnet motors," IEEE Transactions on Energy Conversion, Vol. 20, No. 2, 352-358, 2005.
doi:10.1109/TEC.2004.841507

16. Fan, Y., K. T. Chau, and M. Cheng, "A new three-phase doubly salient permanent magnet machine for wind power generation," IEEE Transactions on Industry Applications, Vol. 42, No. 1, 53-60, 2006.
doi:10.1109/TIA.2005.861910

17. Deodhar, R. P., S. Andersson, I. Boldea, and T. J. E. Miller, "The °ux-reversal machine: A new brushless doubly-salient permanent magnet machine," IEEE Transactions on Industry Applications, Vol. 33, No. 4, 925-934, 1997.
doi:10.1109/28.605734

18. Zhu, Z. Q., Y. Pang, D. Howe, S. Iwasaki, R. Deodhar, and A. Pride, "Analysis of electromagnetic performance of flux-switching permanent magnet machines by non-linear adaptive lumped parameter magnetic circuit model," IEEE Transactions on Magnetics, Vol. 41, No. 11, 4277-4287, 2005.
doi:10.1109/TMAG.2005.854441

19. Zhao, W., M. Cheng, K. T. Chau, W. Hua, H. Jia, J. Ji, and W. Li, "Stator-flux-oriented fault-tolerant control of flux-switching permanent-magnet motors," IEEE Transactions on Magnetics, Vol. 47, No. 10, 4191-4194, 2011.
doi:10.1109/TMAG.2011.2157106

20. Chau, K. T., J. Z. Jiang, and Y. Wang, "A novel stator doubly fed doubly salient permanent magnet brushless machine," IEEE Transactions on Magnetics, Vol. 39, No. 5, 3001-3003, 2003.
doi:10.1109/TMAG.2003.816722

21. Zhu, X., K. T. Chau, M. Cheng, and C. Yu, "Design and control of a flux-controllable stator-permanent magnet brushless motor drive," Journal of Applied Physics, Vol. 103, No. 7, 07F134-07F134-3, 2008.
doi:10.1063/1.2838325

22. Liu, C., K. T. Chau, W. Li, and C. Yu, "Efficiency optimization of a permanent-magnet hybrid brushless machine using DC field current control ," IEEE Transactions on Magnetics, Vol. 45, No. 10, 4652-4655, 2009.
doi:10.1109/TMAG.2009.2023063

23. Chau, K. T., Y. B. Li, J. Z. Jiang, and S. Niu, "Design and control of a PM brushless hybrid generator for wind power application," IEEE Transactions on Magnetics, Vol. 42, No. 10, 3497-3499, 2006.
doi:10.1109/TMAG.2006.879436

24. Liu, C., K. T. Chau, J. Z. Jiang, and L. Jian, "Design of a new outer-rotor permanent magnet hybrid machine for wind power generation," IEEE Transactions on Magnetics, Vol. 44, No. 6, 1494-1497, 2008.
doi:10.1109/TMAG.2007.916503

25. Ostovic, V., IEEE Industry Applications Magazine, Vol. 9, No. 1, 52-61, 2003.

26. Yu, C. and K. T. Chau, "Design, analysis and control of DC-excited memory motors," IEEE Transactions on Energy Conversion , Vol. 26, No. 2, 479-489, 2011.
doi:10.1109/TEC.2010.2085048

27. Yu, C. and K. T. Chau, "Dual-mode operation of DC-excited memory motors under flux regulation," IEEE Transactions on Industry Applications, Vol. 47, No. 5, 2031-2041, 2011.
doi:10.1109/TIA.2011.2161850

28. Li, W., K. T. Chau, Y. Gong, J. Z. Jiang, and F. Li, "A new flux-mnemonic dual-magnet brushless machine," IEEE Transactions on Magnetics, Vol. 47, No. 10, 4223-4226, 2011.
doi:10.1109/TMAG.2011.2157954

29. Yu, C., K. T. Chau, and J. Z. Jiang, "A flux-mnemonic permanent magnet brushless machine for wind power generation," Journal of Applied Physics, Vol. 105, No. 7, 07F114-07F114-3, 2009.
doi:10.1063/1.3072377

30. Atallah, K. and D. Howe, "A novel high performance magnetic gear," IEEE Transactions on Magnetics, Vol. 37, No. 4, 2844-2846, 2001.
doi:10.1109/20.951324

31. Jian, L., K. T. Chau, Y. Gong, J. Z. Jiang, C. Yu, and W. Li, "Comparison of coaxial magnetic gears with different topologies," IEEE Transactions on Magnetics, Vol. 45, No. 10, 4526-4529, 2009.
doi:10.1109/TMAG.2009.2021662

32. Jian, L. and K.-T. Chau, "Analytical calculation of magnetic field distribution in coaxial magnetic gears," Progress In Electromagnetics Research, Vol. 92, 1-16, 2009.
doi:10.2528/PIER09032301

33. Liu, X., K. T. Chau, J. Z. Jiang, and C. Yu, "Design and analysis of interior-magnet outer-rotor concentric magnetic gears," Journal of Applied Physics, Vol. 105, No. 7, 07F101-07F101-3, 2009.
doi:10.1063/1.3058619

34. Jian, L. and K. T. Chau, "A coaxial magnetic gear with Halbach permanent magnet arrays," IEEE Transactions on Energy Conversion, Vol. 25, No. 2, 319-328, 2010.
doi:10.1109/TEC.2010.2046997

35. Gouda, E., S. Mezani, L. Baghli, and A. Rezzoug, "Comparative study between mechanical and magnetic planetary gears," IEEE Transactions on Magnetics, Vol. 47, No. 2, 439-450, 2011.
doi:10.1109/TMAG.2010.2090890

36. Jian, L., K. T. Chau, and J. Z. 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.
doi:10.1109/TIA.2009.2018974

37. Harris, M. R., "Comparison of alternative topologies for VRPM (transverse-flux) electrical machines," IEE Colloquium on New Topologies for Permanent Magnet Machines, 2/1-2/7, 1997.

38. Toba, A. and T. A. Lipo, "Novel dual-excitation permanent magnet vernier machine," IEEE Conference on Industry Applications, 2539-2544, 1999.

39. Li, J., K. T. Chau, and W. Li, "Harmonic analysis and comparison of permanent magnet vernier and magnetic-geared machines," IEEE Transactions on Magnetics, Vol. 47, No. 10, 3649-3652, 2011.
doi:10.1109/TMAG.2011.2159105

40. Li, J., K. T. Chau, J. Z. Jiang, C. Liu, and W. Li, "A new efficient permanent-magnet vernier machine for wind power generation," IEEE Transactions on Magnetics, Vol. 45, No. 6, 1475-1478, 2010.
doi:10.1109/TMAG.2010.2044636

41. Spooner, E. and L. Haydock, "Vernier hybrid machines," IEE Proceedings - Electric Power Applications, Vol. 150, No. 6, 655-662, 2003.
doi:10.1049/ip-epa:20030909

42. Holehouse, R. C., K. Atallah, and J. Wang, "Design and realization of a linear magnetic gear," IEEE Transactions on Magnetics, Vol. 47, No. 10, 4171-4174, 2011.
doi:10.1109/TMAG.2011.2157101

43. Li, W. and K.-T. Chau, "Analytical field calculation for linear tubular magnetic gears using equivalent anisotropic magnetic permeability," Progress In Electromagnetics Research, Vol. 127, 155-171, 2012.
doi:10.2528/PIER12030301

44. Li, W., K. T. Chau, and J. Z. Jiang, "Application of linear magnetic gears for pseudo-direct-drive oceanic wave energy harvesting," IEEE Transactions on Magnetics, Vol. 47, No. 10, 2624-2627, 2011.
doi:10.1109/TMAG.2011.2146233

45. Brooking, P. R. M. and M. A. Mueller, "Power conditioning of the output from a linear vernier hybrid permanent magnet generator for use in direct drive wave energy converters," IEE Proceedings - Generation, Transmission and Distribution, Vol. 152, No. 5, 673-681, 2005.
doi:10.1049/ip-gtd:20045134

46. Du, Y., K. T. Chau, M. Cheng, Y. Fan, Y. Wang, W. Hua, and Z. Wang, "Design and analysis of linear stator permanent magnet vernier machines," IEEE Transactions on Magnetics, Vol. 47, No. 10, 4219-4222, 2011.
doi:10.1109/TMAG.2011.2156392

47. Supermagnete "Why the price explosion for neodymium magnets?,", Available from: http://www.supermagnete.de/eng/faq/price, [Accessed May 1, 2012].

48. Cardenas, R., R. Pena, M. Perez, J. Clare, G. Asher, and P. Wheeler, "Control of a switched reluctance generator for variable-speed wind energy applications," IEEE Transactions on Energy Conversion, Vol. 20, No. 4, 781-791, 2005.
doi:10.1109/TEC.2005.853733

49. Chau, K. T., M. Cheng, and C. C. Chan, "Nonlinear magnetic circuit analysis for a novel stator doubly fed doubly salient machine," IEEE Transactions on Magnetics, Vol. 38, No. 5, 2382-2384, 2002.
doi:10.1109/TMAG.2002.803582

50. Fan, Y., K. T. Chau, and S. Niu, "Development of a new brushless doubly fed doubly salient machine for wind power generation," IEEE Transactions on Magnetics, Vol. 42, No. 10, 3455-3457, 2006.
doi:10.1109/TMAG.2006.879435

Prof. Kwok-Tong Chau

Mr. Wenlong Li

Dr. Christopher H. T. Lee