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Torque Superposition Compensation Fault-Tolerant Control for Dual Three-Phase PMSM with an Inverter Single-Leg Open-Circuit Fault

Author

Listed:
  • Yongyang Zhou

    (College of Information Science and Technology, Donghua University, Shanghai 201620, China)

  • Fei Yao

    (College of Information Science and Technology, Donghua University, Shanghai 201620, China)

  • Shuguang Zhao

    (College of Information Science and Technology, Donghua University, Shanghai 201620, China)

Abstract

Dual three-phase permanent-magnet synchronous motors (PMSM) have wide applications in electric vehicles due to advantages such as excellent control performance and outstanding fault tolerance capability. However, present fault-tolerant control of inverter single-leg open-circuit faults cannot make full use of each phase winding of the motor, which limits the torque-production capability. This paper proposes a torque superposition compensation (TSC) control which can minimize the stator copper losses while increasing the torque-production capability. The phase winding originally connected to the faulty inverter leg is then linked to the DC-link mid-point. Thus, the winding in the faulty phase can be utilized to generate an additional torque. The symmetric dual three-phase windings torque model and the asymmetric five-phase windings compensation torque model for U d /2 voltage level are constructed according to the torque superposition, respectively. Then, the three-subplane decomposition transformation matrix for the post-fault dual three-phase PMSM is derived, and the decoupling model in the d-q subplane is constructed, which achieves the optimal enhancement of the torque-production capability. The simulation results verify the effectiveness of the proposed TSC fault-tolerant control.

Suggested Citation

  • Yongyang Zhou & Fei Yao & Shuguang Zhao, 2022. "Torque Superposition Compensation Fault-Tolerant Control for Dual Three-Phase PMSM with an Inverter Single-Leg Open-Circuit Fault," Energies, MDPI, vol. 15(16), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:16:p:6053-:d:893689
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    References listed on IDEAS

    as
    1. Jian Zheng & Shoudao Huang & Fei Rong & Mingcheng Lye, 2018. "Six-Phase Space Vector PWM under Stator One-Phase Open-Circuit Fault Condition," Energies, MDPI, vol. 11(7), pages 1-21, July.
    2. Ting Yang & Takahiro Kawaguchi & Seiji Hashimoto & Wei Jiang, 2020. "Switching Sequence Model Predictive Direct Torque Control of IPMSMs for EVs in Switch Open-Circuit Fault-Tolerant Mode," Energies, MDPI, vol. 13(21), pages 1-15, October.
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