周华伟, 李龙彪, 胡越, 陶涛, 颜黎浩. 五相PMSM单相开路故障下简化有限控制集模型预测转矩和磁链控制[J]. 中国电机工程学报, 2025, 45(5): 1958-1967. DOI: 10.13334/j.0258-8013.pcsee.232011
引用本文: 周华伟, 李龙彪, 胡越, 陶涛, 颜黎浩. 五相PMSM单相开路故障下简化有限控制集模型预测转矩和磁链控制[J]. 中国电机工程学报, 2025, 45(5): 1958-1967. DOI: 10.13334/j.0258-8013.pcsee.232011
ZHOU Huawei, LI Longbiao, HU Yue, TAO Tao, YAN Lihao. Simplified Finite-control-set Model Predictive Torque and Flux Control for Five-phase PMSM With Single-phase Open-circuit Fault[J]. Proceedings of the CSEE, 2025, 45(5): 1958-1967. DOI: 10.13334/j.0258-8013.pcsee.232011
Citation: ZHOU Huawei, LI Longbiao, HU Yue, TAO Tao, YAN Lihao. Simplified Finite-control-set Model Predictive Torque and Flux Control for Five-phase PMSM With Single-phase Open-circuit Fault[J]. Proceedings of the CSEE, 2025, 45(5): 1958-1967. DOI: 10.13334/j.0258-8013.pcsee.232011

五相PMSM单相开路故障下简化有限控制集模型预测转矩和磁链控制

Simplified Finite-control-set Model Predictive Torque and Flux Control for Five-phase PMSM With Single-phase Open-circuit Fault

  • 摘要: 单相开路故障的五相永磁同步电机(permanent-magnet synchronous motor,PMSM)采用有限集模型预测转矩和磁链控制(finite-control-set model predictive torque and flux control,FCS-MPTFC)策略,存在转矩脉动大、价值函数的权重系数整定困难、迭代计算量大以及共模电压(common- mode voltage,CMV)高等问题。为此,该文提出一种简化FCS-MPTFC策略。首先,建立五相PMSM在单相开路故障情况下的数学模型,并分析CMV产生的机理。其次,以抑制3次谐波电流的原则合成等幅值虚拟电压矢量(virtual voltage vector,V3),并将转矩和磁链价值函数等效转化为电压价值函数,同时采用无差拍控制思想计算出参考电压矢量,进而通过合理划分扇区,直接获得最优V3。最后,选择方向相反的两个基电压矢量代替零矢量,以减小开路故障下的CMV。仿真和实验结果表明:所提控制策略不仅能抑制单相开路故障导致的转矩脉动、降低计算负荷和CMV、抑制电流谐波,而且具有优良的稳态和动态性能。

     

    Abstract: Finite-control-set model predictive torque and flux control (FCS-MPTFC) for five-phase permanent-magnet synchronous motor (PMSM) with single-phase open-circuit fault (OCF) has problems such as large torque ripple, difficult setting weight coefficient, large iterative calculation of cost function, and high common-mode voltage (CMV). To solve the problems, a simplified FCS-MPTFC strategy is proposed in this paper. First, the mathematical model of five-phase PMSM with single-phase OCF is built, and the mechanism of CMV generation is analyzed. Then, the equal amplitude virtual voltage vector (V3) is synthesized based on the principle of suppressing the third harmonic current, and the cost function of torque and flux was equivalently transformed into a voltage cost function. Meanwhile, the reference voltage vectors are calculated based on deadbeat control principle, and then the optimal V3 is directly obtained by re-dividing sectors. Finally, to reduce the CMV under OCF, two base voltage vectors in the opposite direction are selected to replace the zero vector. Simulation and experimental results are presented to demonstrate that the proposed control strategy not only suppresses the fluctuating torque caused by single-phase open-circuit fault, but also reduces computational complexity and CMV, and restrains current harmonic. Furthermore, it exhibits excellent steady-state and dynamic performance.

     

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