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Fault-Tolerant Reconfiguration for Two Cascaded Two-Level Inverters Feeding the Dual Open-End Stator Windings of an Induction Motor Cover

Fault-Tolerant Reconfiguration for Two Cascaded Two-Level Inverters Feeding the Dual Open-End Stator Windings of an Induction Motor

Open Access
|Mar 2026

Figures & Tables

Figure 1.

(a) DOESWIM supplied by two cascaded two-level inverters. (b) Structure of the two cascaded two-level inverters.

Figure 2.

Principle of the phase-disposition PWM for two cascaded inverters. PWM, pulse width modulation.

Figure 3.

Variation of the speed, the two-stator currents, and the torques.

Figure 4.

Variation of the pole’s voltage converters and machine.

Figure 5.

Feeding of DOESWIM by four converters for the first configuration.

Figure 6.

Variation of the two-stator currents, speed, and torques for the first configuration.

Figure 7.

Variation of the phase-to-phase voltage inverters and machine for the first configuration.

Figure 8.

(a) Feeding of the DOESWIM by four converters for the second configuration. (b) Reconfiguration of the converters A2 and B2 for the second configuration.

Figure 9.

Variation of the phase-to-phase voltage inverters and machine for the second configuration.

Figure 10.

Variation of the two-stator currents, speed, and torque for the second configuration.

Figure 11.

(a) Feeding of the DOESWIM by four converters for the third configuration. (b) Reconfiguration of the converters A2 and B2 for the third configuration.

Figure 12.

Variation of the phase-to-phase voltage inverters and machine for the third configuration.

Figure 13.

Variation of the two-stator currents, speed, and torque for the third configuration.

Figure 14.

Feeding of the DOESWIM by four converters for the fourth configuration.

Figure 15.

Operational mode of the double star asynchronous machine powered by two converters for the fourth configuration.

Figure 16.

Variation of the phase-to-phase voltage inverters and machine for the fourth configuration.

Figure 17.

Variation of the two-stator currents, speed, and torque for the fourth configuration.

Figure 18.

FFT spectra of the output voltage for the normal mode.

Figure 19.

FFT spectra of the output voltage for the different fault configurations.

Quantitative performance comparison_

Nominal ModeFault 1Fault 2Fault 3Fault 4
THD current (%)0.42.0221.520.632
Torque ripple (%)0.831.31.20.91.2
Peak current (A)7676707276
THD voltage (%)26.74046.842.260

Comparative analysis of the proposed architectures_

OEWIM Two-level inverterOEWIM Two cascaded Two-level invertersDOESWIM Two-level inverterDOESWIM Two cascaded Two-level inverters
Number of voltage level3535
DC voltage valueE/2E/4E/2E/4
Sizing of inverter powerP/2Inverter A11: P/2P/4Inverter A11: P/2
Inverter A12: P/4Inverter A12: P/4
Current I (A)III/2I/2
THD voltage (%)44.2724.9943.8626.77
THD current (%)0.520.390.660.41
Tem (%)1.260.881.660.83
DOI: https://doi.org/10.2478/pead-2026-0007 | Journal eISSN: 2543-4292 | Journal ISSN: 2451-0262
Language: English
Page range: 95 - 110
Submitted on: Nov 22, 2025
Accepted on: Feb 25, 2026
Published on: Mar 24, 2026
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2026 Sami Guizani, Abdelmonoem Nayli, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution 4.0 License.