Fault-Tolerant Control with Faulty Phase Winding Currents Compensation for Current Source Inverter-Fed Five-Phase PMSM under Adjacent Double-Phase Open-Circuit Fault

Chao Chen, Xiaoyong Sun, Zhen Chen*, Xiangdong Liu, Z. Q. Zhu, Xiaozhong Liao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Multi-phase permanent magnet synchronous motors driven by the current source inverters are widely used in safety-critical applications, due to their fault-tolerant capability and high torque/power density. Nevertheless, the fault-tolerant field-oriented control method based on reduced order transformation matrices for addressing the adjacent double-phase open-circuit fault in the current source inverter has not yet been established. Moreover, the influence of faulty phase winding currents has not been analyzed and suppressed. Hence, this paper develops a fault-tolerant control approach that includes compensation for faulty phase winding currents in the case of adjacent double-phase open-circuit fault in the current source inverter. Firstly, the optimized fault-tolerant winding currents are derived. Subsequently, the decoupled mathematical model and fault-tolerant space-vector-pulse-width-modulation strategy are established, and finally the fault-tolerant control is achieved. The effectiveness of the proposed fault-tolerant control scheme has been validated in the experimental results. Additionally, the utilization of compensating for faulty-phase winding currents can lead to a further reduction in electromagnetic torque ripple by 19.32%.

Original languageEnglish
JournalIEEE Transactions on Transportation Electrification
DOIs
Publication statusAccepted/In press - 2025

Keywords

  • Adjacent double-phase open-circuit fault
  • current source inverter
  • faulty phase winding currents compensation
  • multi-phase permanent magnet motor

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Chen, C., Sun, X., Chen, Z., Liu, X., Zhu, Z. Q., & Liao, X. (Accepted/In press). Fault-Tolerant Control with Faulty Phase Winding Currents Compensation for Current Source Inverter-Fed Five-Phase PMSM under Adjacent Double-Phase Open-Circuit Fault. IEEE Transactions on Transportation Electrification. https://doi.org/10.1109/TTE.2025.3530522