Enhanced Fault-Tolerant Model Predictive Current Control for a Five-Phase PM Motor With Continued Modulation

Enhanced Fault-Tolerant Model Predictive Current Control for a Five-Phase PM Motor With Continued Modulation
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具有连续调制功能的五相永磁电机的增强型容错模型预测电流控制

DOI:
10.1109/tpel.2020.3018302
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发表时间:
2021-03
影响因子:
6.7
通讯作者:
Zhu Jihong
Zhu Jihong
中科院分区:
工程技术1区
文献类型:
--
作者:
Tao Tao;Zhao Wenxiang;He Yang;Cheng Yu;Saeed Suleman;Zhu Jihong

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针对单相断路故障,提出了一种连续调制的增强型容错模型预测电流控制方法。该方法包括重构故障后的矢量分布和采用多步矢量选择方法。在重构过程中,生成转换向量以实现标准的脉宽调制波形。然后,可以通过创建新的合成矢量来填充无法到达的区域。最后,利用零矢量对幅值过大的矢量进行优化。为了覆盖全调制区域,采用多步矢量选择法确定最优矢量的相角和幅值。通过定义两个代价函数并采用占空比调制技术来确定相角。再利用占空比调制技术对最优矢量的幅值进行优化。由反电动势引起的振荡在每一步中都得到补偿。通过实验验证了该容错方法的有效性和优越性。
To deal with the single-phase open-circuited fault, an enhanced fault-tolerant model predictive current control with continued modulation is proposed in this article. This method includes reconstructing the postfault vector distribution and adopting a multistep vector selection method. In the reconstruction procedure, the transition vectors are generating to realize standard pulsewidth modulation waveforms. Then, the unreachable area can be filled by creating new synthetic vectors. Finally, the vectors with oversized amplitudes are optimized by using null vectors. In order to cover the full modulation area, a multistep vector selection method is used to determine the phase angle and amplitude of the optimal vector. The phase angle can be determined by defining two cost functions and adopting duty cycle modulation technology. The amplitude of the optimal vector can be optimized by utilizing the duty cycle modulation technology again. The oscillation, due to the back electromotive force, is compensated in each step. A thorough experimental evaluation has been conducted to confirm the effectiveness and superiority of the proposed fault-tolerant method.
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