volume | PIER Journals

Abstract

Flux reversal machines (FRMs) have a broad application prospect due to its simple structure, high efficiency, and high reliability. However, due to the large magnetic flux leakage between poles, the further improvement of torque density of the FRMsis limited. To reduce magnetic flux leakage and improve torque, a novel consequent pole FRM with asymmetric stator poles is proposed in this paper. The `NS-NS' arrangement order of thepermanent magnets (PMs) of the conventional FRM is changed to the `NSN-S' PMs arrangement order with asymmetric stator poles, and the consequent pole topology is used simultaneously. All the N-poles of PMs are replaced by iron poles. Finally, the topology of the `Fe/S/Fe-S' arrangement order is obtained. A simplified magnetic circuit model is established to explain the principle of reducing magnetic flux leakage. To improve the torque density, the key design parameters are optimized by genetic algorithm, and the optimal parameters of the machine are finally determined. Finally, the finite element model is established. Compared with the conventional FRM, the torque of the proposed machine is increased by 67.18%, and the consumption of PM is reduced by 51.6%. Therefore, the proposed machine has good electromagnetic characteristics and economic benefits.

1. Cheng, M., W. Hua, J. Zhang, and W. Zhao, "Overview of stator-permanent magnet brushless machines," IEEE Trans. Ind. Electron., Vol. 58, No. 11, 5087-5101, Nov. 2011.
doi:10.1109/TIE.2011.2123853 Google Scholar

2. Gao, Y., D. Li, R. Qu, X. Fan, J. Li, and H. Ding, "A novel hybrid excitation flux reversal machine for electric vehicle propulsion," IEEE Trans. Veh. Technol., Vol. 67, No. 1, 171-182, Jan. 2018.
doi:10.1109/TVT.2017.2750206 Google Scholar

3. Gao, Y., R. Qu, D. Li, and J. Li, "Torque performance analysis of three-phase flux reversal machines," IEEE Trans. Ind. Appl., Vol. 53, No. 3, 2110-2119, 2017.
doi:10.1109/TIA.2017.2677356 Google Scholar

4. Hua, W., X. Zhu, and Z.Wu, "Influence of coil pitch and stator-slot/rotor-pole combination on back EMF harmonics in flux-reversal permanent magnet machines," IEEE Trans. Energy Conversion., Vol. 33, No. 3, 1330-1341, 2018.
doi:10.1109/TEC.2018.2795000 Google Scholar

5. Zhu, X., W. Hua, W. Wang, and W. Huang, "Analysis of back-EMF in flux-reversal permanent magnet machines by air gap field modulation theory," IEEE Trans. Ind. Electron., Vol. 66, No. 5, 3344-3355, 2019.
doi:10.1109/TIE.2018.2854575 Google Scholar

6. Li, H. and Z. Zhu, "Optimal number of magnet pieces of flux reversal permanent magnet machines," IEEE Trans. Energy Convers., Vol. 34, No. 2, 889-898, 2019.
doi:10.1109/TEC.2018.2866765 Google Scholar

7. Li, D., Y. Gao, R. Qu, J. Li, Y. Huo, and H. Ding, "Design and analysis of a flux reversal machine with evenly distributed permanent magnets," IEEE Trans. Ind. Appl., Vol. 54, No. 1, 172-183, 2018.
doi:10.1109/TIA.2017.2750998 Google Scholar

8. Xie, K., D. Li, R. Qu, Z. Yu, Y. Gao, and Y. Pan, "Analysis of a flux reversal machine with quasi-halbach magnets in stator slot opening," IEEE Trans. Ind. Appl., Vol. 55, No. 2, 1250-1260, 2019.
doi:10.1109/TIA.2018.2873540 Google Scholar

9. Qu, H., Z. Zhu, H. Li, and , "Analysis of novel consequent pole flux reversal permanent magnet machines," IEEE Trans. Ind. Appl., Vol. 57, No. 1, 382-396, Jan. 2021.
doi:10.1109/TIA.2020.3036328 Google Scholar

10. Yang, H., H. Lin, Z. Zhu, S. Lyu, and Y. Liu, "Design and analysis of novel asymmetric-stator-pole flux reversal pm machine," IEEE Trans. Ind. Electron., Vol. 67, No. 1, 101-114, 2020.
doi:10.1109/TIE.2019.2896097 Google Scholar

11. Li, H., Z. Zhu, and H. Hua, "Comparative analysis of flux reversal permanent magnet machines with toroidal and concentrated windings," IEEE Trans. Ind. Electron., Vol. 67, No. 7, 5278-5290, 2020.
doi:10.1109/TIE.2019.2934064 Google Scholar

12. Qu, H. and Z. Zhu, "Analysis of spoke array permanent magnet flux reversal machines," IEEE Trans. Energy Convers., Vol. 35, No. 3, 1688-1696, 2020.
doi:10.1109/TEC.2020.2986948 Google Scholar

13. Wu, L., Y. Zheng, Y. Fang, and X. Huang, "Novel fault-tolerant doubly fed flux reversal machine with armature windings wound on both stator and rotor teeth," IEEE Trans. Ind. Electron., Vol. 68, No. 6, 4780-4789, 2021.
doi:10.1109/TIE.2020.2989721 Google Scholar

14. Zheng, Y., L. Wu, J. Zhu, Y. Fang, and L. Qiu, "Analysis of dual-armature flux reversal permanent magnet machines with Halbach array magnets," IEEE Trans. Energy Convers., Vol. 36, No. 4, 3044-3052, 2021.
doi:10.1109/TEC.2021.3070039 Google Scholar

15. Gao, Y., D. Li, R. Qu, and J. Li, "Design procedure of flux reversal permanent magnet machines," IEEE Trans. Ind. Appl., Vol. 53, No. 5, 4232-4241, Sep.-Oct. 2017.
doi:10.1109/TIA.2017.2695980 Google Scholar

16. Gao, Y., R. Qu, D. Li, J. Li, and L. Wu, "Design of three-phase flux-reversal machines with fractional-slot windings," IEEE Trans. Ind. Appl., Vol. 52, No. 4, 2856-2864, 2016.
doi:10.1109/TIA.2016.2535108 Google Scholar

17. Liu, G., Z. Ma, H. Zhu, J. Sun, and J. Huan, "Multi-objective optimization and analysis of six-pole outer rotor hybrid magnetic bearing," Progress In Electromagnetics Research C, Vol. 119, 97-114, 2022.
doi:10.2528/PIERC22010601 Google Scholar

18. Jing, L., W. Tang, W. Liu, Y. Rao, C. Tan, and R. Qu, "A double-stator single-rotor magnetic field modulated motor with HTS bulks," IEEE Trans. Appl. Supercond, Vol. 32, No. 6, 1-5, 2022. Google Scholar

19. Tang, W., L. Jing, and L. Zheng, "A diesel-electric hybrid field modulation motor with bread-loaf eccentric magnetic pole for ship propulsion," Progress In Electromagnetics Research C, Vol. 125, 147-159, 2022.
doi:10.2528/PIERC22061602 Google Scholar

20. Zhou, X., X. Zhu, W. Wu, Z. Xiang, Y. Liu, and L. Quan, "Multi-objective optimization design of variable-saliency-ratio PM motor considering driving cycles," IEEE Trans. Ind. Electron., Vol. 68, No. 8, 6516-6526, Aug. 2021.
doi:10.1109/TIE.2020.3007106 Google Scholar

Dr. Libing Jing

Dr. Kun Yang