Sensorless Speed Control of Five-Phase PMSM Drives in Case of a Single-Phase Open-Circuit Fault

  • Kamel SalehEmail author
  • Mark Sumner
Research Paper


This paper introduces a new method to track saliency in a five-phase permanent magnet synchronous motor in case of a single-phase open-circuit fault. The proposed method depends on measuring the dynamic current response of the motor line currents due to the insulated-gate bipolar transistor switching actions. In case of a single-phase open-circuit fault, a fault-tolerant control strategy to control the remaining healthy currents results in minor system performance degradation. The new strategy that is proposed in this paper to track the saliency includes software modifications only to the saliency tracking algorithm used in healthy mode in order to make it applicable in the cases of a single-phase open-circuit fault. It uses the fundamental pulse width modulation waveform obtained using a symmetric multi-phase space vector pulse width modulation only. Simulation results are provided to verify the effectiveness of the proposed design over a wide speed range under different load conditions.


Sensorless Five-phase motor Multi-dimensional SVPWM Open-circuit fault 


  1. Abdel-Khalik AS, Mostafa Gadoue S, Masoud MI, Wiliams BW (2011) Optimum flux distribution with harmonic injection for a multiphase induction machine using genetic algorithms. IEEE Trans Energy Convers 26(2):501–512CrossRefGoogle Scholar
  2. Abdel-Khalik AS, Morsy AS, Ahmed S, Massoud AM (2014) Effect of stator winding connection on performance of five-phase induction machines. IEEE Trans Ind Electron 61(1):3–19CrossRefGoogle Scholar
  3. Bianchi N, Bolognani S, Dai Pre M (2007) Strategies for the fault-tolerant current control of a five-phase permanent-magnet motor. IEEE Trans Ind Appl 43(4):960–970CrossRefGoogle Scholar
  4. Chen KY (2015) Multiphase pulse-width modulation considering reference order for sinusoidal wave production. In: 2015 IEEE 10th conference on industrial electronics and applications (ICIEA), Auckland, pp 1155–1160Google Scholar
  5. Chen Q, Liu G, Zhao W, Qu L, Xu G (2017) Asymmetrical SVPWM fault-tolerant control of five-phase PM brushless motors. IEEE Trans Energy Convers 32(1):12–22CrossRefGoogle Scholar
  6. Dabour SM, Masoud MI (2006) Investigation of five-phase induction motor drive under faulty inverter conditions. In: IEEE international conference on Industrial technology, 2015. ICIT 2015, pp 1–6Google Scholar
  7. Fu JR, Lipo TA (1993) Disturbance free operation of a multiphase current regulated motor drive with an opened phase. In: Conference record of the 1993 IEEE industry applications conference twenty-eighth IAS annual meeting, vol 1. Toronto, pp 637–644Google Scholar
  8. Fu JR, Lipo TA (1994) Disturbance-free operation of a multiphase current-regulated motor drive with an opened phase. IEEE Trans Ind Appl 30(5):1267–1274CrossRefGoogle Scholar
  9. Gao L, Fletcher JE, Zheng L (2011) Low-speed control improvements for a two-level five-phase inverter-fed induction machine using classic direct torque control. IEEE Trans Ind Electron 58(7):2744–2754CrossRefGoogle Scholar
  10. Holmes D, McGrath B, Parker S (2012) Current regulation strategies for vector-controlled induction motor drives. IEEE Trans Ind Electron 59(10):2689–3680CrossRefGoogle Scholar
  11. Jones M, Vukosavic S, Dujic D, Levi E (2009) A synchronous current control scheme for multiphase induction motor drives. IEEE Trans Energy Convers 24(4):860–868CrossRefGoogle Scholar
  12. Kestelyn X, Semail E (2011) A vectorial approach for generation of optimal current references for multiphase permanent-magnet synchronous machines in real time. IEEE Trans Ind Electron 58(11):5057–5065CrossRefGoogle Scholar
  13. Lorenz RD, Van Patten KW (1991) High-resolution velocity estimation for all-digital, ac servo drives. IEEE Trans Ind Appl 27:701–705CrossRefGoogle Scholar
  14. Mohammadpour A, Sadeghi S, Parsa L (2014) A generalized fault-tolerant control strategy for five-phase PM motor drives considering star, pentagon, and pentacle connections of stator windings. IEEE Trans Ind Electron 61:63–75CrossRefGoogle Scholar
  15. Morsy AS, Abdel-khalik AS, Ahmed S, Massoud A (2013) Sensorless V/f control with MRAS speed estimator for a five-phase induction machine under open-circuit phase faults. In: 2013 7th IEEE GCC conference and exhibition (GCC), Doha, pp 268–273Google Scholar
  16. Parsa L, Toliyat HA (2007) Sensorless direct torque control of five-phase interior permanent-magnet motor drives. IEEE Trans Ind Appl 43(4):952–959CrossRefGoogle Scholar
  17. Riveros JA, Barrero F, Levi E, Durán MJ, Toral S, Jones M (2013) Variable-speed five-phase induction motor drive based on predictive torque control. IEEE Trans Ind Electron 60(8):2957–2968CrossRefGoogle Scholar
  18. Saleh K, Sumner M (2016) Modelling and simulation of a sensorless control of five phase PMSM drives using multi dimension space vector modulation. In: TELKOMNIKA (telecommunication, computing, electronics and control). pp 1269–1283Google Scholar
  19. Saleh K, Sumner M (2017) Sensorless speed control of five-phase PMSM drives with low current distortion. Springer Electr Eng J 100:1–18Google Scholar
  20. Song Q, Zhang X, Yu F, Zhang C (2005) Research on space vector PWM of five-phase three-level inverter. In: 2005 International conference on electrical machines and systems, Nanjing, pp 1418–1421Google Scholar
  21. Tani A, Mengoni M, Zarri L, Serra G, Casadei D (2012) Control of multiphase induction motors with an odd number of phases under open circuit faults. IEEE Trans Power Electron 27(2):565–577CrossRefGoogle Scholar
  22. Villani M, Tursini M, Fabri G, Castellini L (2010) Multi-phase fault tolerant drives for aircraft applications. In: Electrical systems for aircraft, railway and ship propulsion, Bologna, pp 1–6.
  23. Wang P, Zheng P, Wu F, Zhang J, Li T (2014) Research on dual-plane vector control of five phase fault-tolerant permanent magnet machine. In: 2014 IEEE conference and expo transportation electrification Asia-Pacific (ITEC Asia-Pacific), Beijing, pp 1–5Google Scholar
  24. Xue S, Wen X, Feng Z (2006) A novel multi-dimensional SVPWM strategy of multiphase motor drives. In: 2006 12th international power electronics and motion control conference, Portoroz, pp 931–935Google Scholar
  25. Zhang W, Xu D, Enjeti PN, Li H, Hawke JT, Krishnamoorthy HS (2014) Survey on fault-tolerant techniques for power electronic converters. IEEE Trans Power Electron 29(12):6319–6331CrossRefGoogle Scholar

Copyright information

© Shiraz University 2019

Authors and Affiliations

  1. 1.Electrical Engineering DepartmentAn-Najah National UniversityNablesPalestine
  2. 2.Electrical Engineering DepartmentNottingham UniversityNottinghamUK

Personalised recommendations