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Abstract

Rotor eccentricities are one of the common faults in electrical machines. The influence of closed-loop vector controller on electromagnetic characteristics of Fractional-Slot Permanent Magnet Synchronous Machine (FS-PMSM) with rotor eccentricities is explored. Firstly, the distortion of air-gap flux density introduced by rotor eccentricities is analyzed, and the harmonics of air-gap flux density caused by rotor eccentricities are calculated. Secondly, the characteristics of the fundamentals and harmonics of back electromotive force (EMF) of FS-PMSM with rotor eccentricities are studied based on harmonic analysis. Finally, combined with the three-phase back-EMFs and the voltage equation, the characteristics of three-phase current of FS-PMSM fed by closed-loop vector controller with rotor eccentricities is studied. Thus, the influence of closed-loop vector controller on the torque characteristics of FS-PMSM with rotor eccentricity is studied. The field-circuit coupling simulation shows that static eccentricity causes unbalance in three-phase back-EMFs, but does not change the harmonic order. While dynamic eccentricity not only leads to the unbalance of three-phase back-EMFs, but also introduces even order harmonics. Under the compensation of closed-loop vector controller, the harmonic distribution of current is consistent with back-EMF and the magnitude of in-phase remains unchanged with static eccentricity while fluctuates with dynamic eccentricity. In addition, the torque fluctuation of FS-PMSM caused by rotor eccentricities is obviously reduced.

Keywords

closed-loop vector controller fractional-slot permanent magnet synchronous machine (FS-PMSM)rotor eccentricity electromagnetic characteristics

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References

Bellini

Filippetti

Franceschini

Tassoni

(2000). Closed-loop control impact on the diagnosis of induction motors faults. IEEE Transactions on Industry Applications, 36, 1318–1329. https://doi.org/10.1109/28.871280

Chen

J. B.

Demerdash

Guan

Lee

(2021). Diagnosis of open-phase faults for a five-phase pmsm fed by a closed-loop vector-controlled drive based on magnetic field pendulous oscillation technique. IEEE Transactions on Industrial Electronics, 7, 5582–5593. https://doi.org/10.1109/TIE.2020.3000109

Chen

Z. F.

Wang

Fan

C. Y.

Ling

Z. H.

Z. X.

Wang

Q. Y.

(2023). Analysis of rotor eccentricity fault in ipmsm with different armature winding structures. IEEE Transactions on Magnetics, 59(3), 1–10. https://doi.org/10.1109/TMAG.2023.3238318

Cheng

Sun

Buja

Song

Z. X.

(2015). Advanced electrical machines and machine-based systems for electric and hybrid vehicles. Energies, 8, 9541–9564. https://doi.org/10.3390/en8099541

B. J.

Mao

Lin

Xiao

Niu

H. R.

(2020). Effect of rotor eccentricity fault on air gap magnetic field in brushless doubly-fed machine. Transactions of China Electrotechnical Society, 35(3), 502–508. https://doi.org/10.19595/j.cnki.1000-6753.tces.190494

T. R.

Zhu

Z. Q.

Wang

Bin

Gong

L. M.

(2022). Eccentricity on electromagnetic performance of 2-pole/3-slot pm motors. IEEE Transactions on Energy Conversion, 37(1), 696–706. https://doi.org/10.1109/TEC.2021.3098669

Kim

K. T.

Kim

K. S.

Hwang

S. M.

Kim

T. J.

Jung

Y. H.

(2001). Comparison of magnetic forces for IPM and SPM motor with rotor eccentricity. IEEE Transactions on Magnetics, 37, 3448–3451. https://doi.org/10.1109/20.952634

Lee

Shin

Bang

Nah

Choi

(2020). Experimental verification and analytical study of influence of rotor eccentricity on electromagnetic characteristics of permanent magnet machine. IEEE Transactions on Applied Superconductivity, 30(4), 1–5. https://doi.org/10.1109/TASC.2020.2975194

Liu

C. H.

Chau

K. T.

Lee

C. H. T.

Song

Z. X.

(2020). A critical review of advanced electric machines and control strategies for electric vehicles. Proceedings of the IEEE, 109, 1004–1028. https://doi.org/10.1109/JPROC.2020.3041417

10.

Park

Jeong

Bianchi

Hur

(2018). Frame-to-shaft voltage and end-to-end shaft voltage analysis according to eccentricity in ipmsms. 2018 IEEE Energy Conversion Congress and Exposition (ECCE), 3255–3262. https://doi.org/10.1109/ECCE.2018.8557736

11.

Petrov

Niemela

Ponomarev

Pyrhonen

(2017). Rotor surface ferrite permanent magnets in electrical machines: Advantages and limitations. IEEE Transactions on Industrial Electronics, 64, 5314–5322. https://doi.org/10.1109/TIE.2017.2677320

12.

Ren

Wang

X. H.

Zhao

W. L.

(2022). Magnetic field prediction of the saturated surface-mounted permanent magnet synchronous machine with rotor eccentricity. IEEE Transactions on Industrial Electronics, 69, 7756–7766. https://doi.org/10.1109/TIE.2021.3105985

13.

Sui

Zheng

Yin

Wang

(2019). Open-circuit fault-tolerant control of five-phase pm machine based on reconfiguring maximum round magnetomotive force. IEEE Transactions on Industrial Electronics, 66, 48–59. https://doi.org/10.1109/TIE.2018.2829669

14.

Wang

Zhu

Z. Q.

Feng

J. H.

Hua

J. H.

Guo

S. Y.

Y. F.

Wang

(2020). Investigation of unbalanced magnetic force in fractional-slot permanent magnet machines having an odd number of stator slots. IEEE Transactions on Energy Conversion, 35, 1954–1963. https://doi.org/10.1109/TEC.2020.2995803

15.

L. J.

Zhu

Z. Q.

Mohd

(2013). Unbalanced magnetic force in permanent magnet machines having asymmetric windings and static/rotating eccentricities. International Conference on Electrical Machines and System.

16.

X. M.

Zhu

Z. Q.

Z. Y.

Liu

T. Y.

Y. X.

(2020). Analysis and suppression of rotor eccentricity effects on fundamental model based sensorless control of permanent magnet synchronous machine. IEEE Transactions on Industry Applications, 56, 4896–4905. https://doi.org/10.1109/TIA.2020.2997297

17.

Zafarani

Bontanci

Goktas

Akin

(2018). Interturn short-circuit faults in permanent magnet synchronous machines: An extended review and comprehensive analysis. IEEE Journal of Emerging and Selected Topics in Power Electronics, 6, 2173–2191. https://doi.org/10.1109/JESTPE.2018.2811538

18.

Zhou

S. T.

Guo

W. N.

Xiao

Zhu

J. W.

(2021). Vibration characteristics analysis of EMU traction motor rotor under eccentric faults. Engineering Mechanics, 38(7), 216–225. https://doi.org/10.6052/j.issn.1000-4750.2020.07.0505

19.

Zhu

Z. Q.

L. J.

Mohd

(2013). Distortion of back-emf and torque of pm brushless machines due to eccentricity. IEEE Transactions on Magnetics, 49, 4927–4936. https://doi.org/10.1109/TMAG.2013.2246181

20.

Zhu

Z. Q.

L. J.

Mohd

(2014). Influence of pole and slot number combinations on cogging torque in permanent-magnet machines with static and rotating eccentricities. IEEE Transactions on Industry Applications, 50, 3265–3277. https://doi.org/10.1109/TIA.2014.2308363

Influence of Closed-Loop Vector Controller on Electromagnetic Characteristics of FS-PMSM with Rotor Eccentricity

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