volume | PIER Journals

Abstract

The reliability of DC-bus capacitors in six-phase drives is an important issue in multi-phase drive systems, and the influence of symmetrical and asymmetrical motor winding loads on the lifetime of DC-bus capacitors is essential. This article uses the SVPWM modulation algorithm to analyze the current and voltage ripple of DC-bus capacitors in a six phase voltage source inverter. Then, by optimizing the capacitance value when searching for the maximum stress point, the capacitance range of DC-bus capacitors is determined. At a power factor of 0.6 and modulation ratios of 0.4, 0.7, and 0.9, considering the changes in ESR, current, and voltage ripple in the capacitor, taking 80% of the rated lifespan as an example, it is found that the lifespan of the DC-bus capacitors in symmetrical configuration of the motor winding is increased by 0.20%, 1.80%, and 10.08% compared to that in asymmetric configuration, respectively. Finally, the analytical and experimental results were compared with existing methods, and the experimental results verified the effectiveness of the proposed method.

1. Salem, A. and M. Narimani, "A review on multiphase drives for automotive traction applications," IEEE Trans. Transp. Electrif., Vol. 5, No. 4, 1329-1348, Dec. 2019.
doi:10.1109/TTE.2019.2956355 Google Scholar

2. Levi, E., F. Barrero, and M. J. Duran, "Multiphase machines and drives — Revisited," IEEE Trans. Ind. Electron., Vol. 63, No. 1, 429-432, Jan. 2016.
doi:10.1109/TIE.2015.2493510 Google Scholar

3. Taha, W., P. Azer, A. D. Callegaro, and A. Emadi, "Multiphase traction inverters: State-of-the-art review and future trends," IEEE Access, Vol. 10, 4580-4599, 2022.
doi:10.1109/ACCESS.2022.3141542 Google Scholar

4. Abdel-Khalik, A. S., M. S. Abdel-Majeed, and S. Ahmed, "Effect of winding configuration on six-phase induction machine parameters and performance," IEEE Access, Vol. 8, 223009-223020, 2020.
doi:10.1109/ACCESS.2020.3044025 Google Scholar

5. Taylor, J., D. F. Valencia Garcia, W. Taha, M. Mohamadian, D. Luedtke, B. Nahid-Mobarakeh, B. Bilgin, and A. Emadi, "Dynamic modelling of multiphase machines based on the VSD transformation," SAE Int. J. Adv. Curr. Pract. Mobil., Vol. 3, No. 4, 1620-1631, 2021.
doi:10.4271/2021-01-0774 Google Scholar

6. Abdelrahman, A., Y.Wang, D. Al-Ani, and B. Bilgin, "Comparative analysis of two rotor topologies for a high-power density dual three-phase IPM propulsion motor," 2021 IEEE Transp. Electrific. Conf. Expo (ITEC), 1-5, Chicago, IL, 2021. Google Scholar

7. Feng, G., C. Lai, W. Li, Z. Li, and N. C. Kar, "Dual reference frame based current harmonic minimization for dual three-phase PMSM considering inverter voltage limit," IEEE Trans. Power Electron., Vol. 36, No. 7, 8055-8066, Jul. 2021.
doi:10.1109/TPEL.2020.3041749 Google Scholar

8. Sun, J., Z. Liu, Z. Zheng, and Y. Li, "An online global fault-tolerant control strategy for symmetrical multiphase machines with minimum losses in full torque production range," IEEE Trans. Power Electron., Vol. 35, No. 3, 2819-2830, Mar. 2020.
doi:10.1109/TPEL.2019.2927382 Google Scholar

9. Zeng, Z., X. Zhang, F. Blaabjerg, H. Chen, and T. Sun, "Stepwise design methodology and heterogeneous integration routine of air-cooled SiCinverter for electric vehicle," IEEE Trans. Power Electron., Vol. 35, No. 4, 3973-3988, Apr. 2020.
doi:10.1109/TPEL.2019.2937135 Google Scholar

10. Chowdhury, S., E. Gurpinar, and B. Ozpineci, "Capacitor technologies: Characterization, selection, and packaging for next-generation power electronics applications," IEEE Trans. Transp. Electrif., Vol. 8, No. 2, 2710-2720, Jun. 2022.
doi:10.1109/TTE.2021.3139806 Google Scholar

11. Guo, J., J. Ye, and A. Emadi, "DC-link current and voltage ripple analysis considering antiparallel diode reverse recovery in voltage source inverters," IEEE Trans. Power Electron., Vol. 33, No. 6, 5171-5180, Jun. 2018.
doi:10.1109/TPEL.2017.2738327 Google Scholar

12. Mariscotti, A., "Analysis of the dc-link current spectrum in voltage source inverters," IEEE Trans. Circuits Syst. I, Fundam. Theory Appl., Vol. 49, No. 4, 484-491, Apr. 2002.
doi:10.1109/81.995663 Google Scholar

13. McGrath, B. P. and D. G. Holmes, "A general analytical method for calculating inverter dc-link current harmonics," IEEE Trans. Ind. Appl., Vol. 45, No. 5, 1851-1859, Sep./Oct. 2009.
doi:10.1109/TIA.2009.2027556 Google Scholar

14. Freitas, I. S., C. B. Jacobina, and E. C. dos Santos, "Single-phase to single-phase full-bridge converter operating with reduced ac power in the dclink capacitor," IEEE Trans. Power Electron., Vol. 25, No. 2, 272-279, Feb. 2010.
doi:10.1109/TPEL.2009.2031225 Google Scholar

15. Pelletier, P., J. M. Guichon, J. L. Schanen, and D. Frey, "Optimization ofa dc capacitor tank," IEEE Trans. Ind. Appl., Vol. 45, No. 2, 880-886, Mar./Apr. 2009.
doi:10.1109/TIA.2009.2013579 Google Scholar

16. Bierhoff, M. and F. Fuchs, "DC-link harmonics of three-phase voltage source converters influenced by the pulse width-modulation strategy— An analysis," IEEE Trans. Ind. Electron., Vol. 55, No. 5, 2085-2092, May 2008.
doi:10.1109/TIE.2008.921203 Google Scholar

17. McGrath, B. and D. Holmes, "A general analytical method for calculating inverter DC-link current harmonics," IEEE Trans. Ind. Appl., Vol. 45, No. 5, 1851-1859, 2009.
doi:10.1109/TIA.2009.2027556 Google Scholar

18. Lee, K., T. M. Jahns, G. Venkataramanan, and W. E. Berkopec, "DC-Bus electrolytic capacitor stress in adjustable-speed drives under input voltage unbalance and sag conditions," IEEE Transactions on Industry Applications, Vol. 43, No. 2, 495-504, March–April 2007.
doi:10.1109/TIA.2006.889910 Google Scholar

19. Kolar, J. W., T. M. Wolbank, and M. Schrodl, "Analytical calculation of the RMS current stress on the DC link capacitor of voltage DC link PWM converter systems," Electrical Machines and Drives, 1999. Ninth International Conference on (Conf. Publ. No. 468), 1999. Google Scholar

Dr. Zhigang Zhang

Dr. Jiamian Chang

Dr. Mengdi Li

Dr. Pengcheng Zhang

Dr. Wenjuan Zhang