Torque ripple minimization of a five-phase induction motor under open-phase faults using symmetrical components

Shan He, Xin Sui, Zijian Liu, Min Kang, Dao Zhou, Frede Blaabjerg*

*Kontaktforfatter

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

1 Citationer (Scopus)
25 Downloads (Pure)

Abstrakt

In order to minimize the torque ripple of five-phase induction motor under open-phase faults, the conventional strategy makes the stator current space vectors to move along the circular anticlockwise trajectories. However, the torque ripple is suppressed indirectly based on the coupling between spatial harmonic fields, and the analytical expression of the torque ripple is not considered. In this paper, according to the steady-state model using symmetrical components (SCs), the torque ripple is mainly caused by the first and fourth SCs. Hence, several possible current commands are deduced under single-phase fault and two-phase fault by suppressing the first and fourth SCs. Under single-phase fault, the proposed strategy shows better performance than the conventional strategy in terms of torque ripple, average torque and efficiency. Under adjacent two-phase fault, the proposed strategy shows lower torque ripple but a lower efficiency than the conventional strategy, and these two strategies can be selected according to the specific application requirements. Finally, the effectiveness of the proposed strategy is validated by the experimental results.
OriginalsprogEngelsk
Artikelnummer9104703
TidsskriftIEEE Access
Vol/bind8
Sider (fra-til)114675-114691
Antal sider17
ISSN2169-3536
DOI
StatusUdgivet - jun. 2020

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