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Fault-Tolerant Direct Torque Control with Harmonic Suppression for Dual Three-Phase SynRMs Using a Five-Leg Inverter.

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Title: Fault-Tolerant Direct Torque Control with Harmonic Suppression for Dual Three-Phase SynRMs Using a Five-Leg Inverter.
Authors: Yuan, Ye1, Nan, Yu1 nanyu12024@163.com, Yang, Fan1, Hua, Yizhou2, Li, Shusheng3, Niu, Weiping1, Kong, Zhenzhen1, Wang, Xifeng1, Chen, Sichao4
Source: Progress in Electromagnetics Research C. 2026, Vol. 166, p257-266. 10p.
Subjects: Fault-tolerant control systems, Torque control, Electric inverters, Harmonic suppression filters, Electric motors
Abstract: High reliability and stability are essential for drive systems in intelligent inspection robots used in the power industry. To meet this requirement, this study investigates dual three-phase synchronous reluctance motors and proposes a five-leg fault-tolerant drive strategy based on directtorque control (DTC). Unlike conventional dimension-reduction coordinate transformation methods that require isolating the faulty phase, which often leads to degraded system performance, the proposed approach introduces a bridge-arm sharing technique. By electrically coupling the faulty phase with a healthy phase, the spatial voltage vector distribution was reconstructed, enabling the reutilization of the faulty phase windings. Under single-phase fault conditions, the method effectively synthesizes the missing voltage vectors, preserves a circular flux linkage trajectory in the α-β subspace, suppresses the 5th and 7th harmonics, and improves the current waveform quality. Simulation results verify that the strategy delivers superior harmonic suppression, reduced torque ripple, and enhanced system reliability, offering a novel technical pathway for fault-tolerant control of multiphase motors with strong potential for engineering applications. [ABSTRACT FROM AUTHOR]
Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Fault-Tolerant Direct Torque Control with Harmonic Suppression for Dual Three-Phase SynRMs Using a Five-Leg Inverter.
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  Data: <searchLink fieldCode="JN" term="%22Progress+in+Electromagnetics+Research+C%22">Progress in Electromagnetics Research C</searchLink>. 2026, Vol. 166, p257-266. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Fault-tolerant+control+systems%22">Fault-tolerant control systems</searchLink><br /><searchLink fieldCode="DE" term="%22Torque+control%22">Torque control</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+inverters%22">Electric inverters</searchLink><br /><searchLink fieldCode="DE" term="%22Harmonic+suppression+filters%22">Harmonic suppression filters</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+motors%22">Electric motors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: High reliability and stability are essential for drive systems in intelligent inspection robots used in the power industry. To meet this requirement, this study investigates dual three-phase synchronous reluctance motors and proposes a five-leg fault-tolerant drive strategy based on directtorque control (DTC). Unlike conventional dimension-reduction coordinate transformation methods that require isolating the faulty phase, which often leads to degraded system performance, the proposed approach introduces a bridge-arm sharing technique. By electrically coupling the faulty phase with a healthy phase, the spatial voltage vector distribution was reconstructed, enabling the reutilization of the faulty phase windings. Under single-phase fault conditions, the method effectively synthesizes the missing voltage vectors, preserves a circular flux linkage trajectory in the α-β subspace, suppresses the 5th and 7th harmonics, and improves the current waveform quality. Simulation results verify that the strategy delivers superior harmonic suppression, reduced torque ripple, and enhanced system reliability, offering a novel technical pathway for fault-tolerant control of multiphase motors with strong potential for engineering applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.2528/PIERC25111003
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 257
    Subjects:
      – SubjectFull: Fault-tolerant control systems
        Type: general
      – SubjectFull: Torque control
        Type: general
      – SubjectFull: Electric inverters
        Type: general
      – SubjectFull: Harmonic suppression filters
        Type: general
      – SubjectFull: Electric motors
        Type: general
    Titles:
      – TitleFull: Fault-Tolerant Direct Torque Control with Harmonic Suppression for Dual Three-Phase SynRMs Using a Five-Leg Inverter.
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            NameFull: Yuan, Ye
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            NameFull: Li, Shusheng
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            – D: 01
              M: 04
              Text: 2026
              Type: published
              Y: 2026
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              Value: 166
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            – TitleFull: Progress in Electromagnetics Research C
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