The increasing interest in dual three-phase motor drives has led to the corresponding research on pulsewidth modulation (PWM) techniques. Compared to carrier-based PWM (CPWM), space-vector PWM (SVPWM) attracts more attention because of clear physical meaning and high design flexibility. However, it is difficult to design the method from the space-vector concept due to the complexity in the selection and the arrangement of the space vectors. In this article, with the unified comprehension of the space-vector and carrier-based approaches to PWM, a straightforward approach is proposed to develop various switching sequences. As a result, a total of ten different switching sequences are presented, including five novel switching sequences. In addition, the time distribution schemes of the applied vectors for the derived switching sequences are explored to obtain the acceptable harmonic performance with low computation burden. With the benefit of the derived switching sequences, a comprehensive investigation on the design of PWM methods can be carried out. As a result, an SVPWM method using five active vectors is proposed with excellent harmonic performance. Simulation and experimental results on a 7.5-kW dual three-phase induction motor drive are given to confirm the correctness of the theoretical analysis and the validity of the proposed method.

中文翻译：

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空间矢量 PWM 的综合研究，包括双三相电机驱动的新颖开关序列


人们对双三相电机驱动器的兴趣日益浓厚，引发了对脉宽调制 (PWM) 技术的相应研究。与基于载波的脉宽调制（CPWM）相比，空间矢量脉宽调制（SVPWM）由于物理意义清晰、设计灵活性高而受到更多关注。然而，由于空间向量的选择和排列的复杂性，很难从空间向量的概念来设计该方法。在本文中，通过对基于空间矢量和基于载波的 PWM 方法的统一理解，提出了一种直接的方法来开发各种开关序列。结果，总共提出了十种不同的切换序列，其中包括五种新颖的切换序列。此外，还探索了所导出的开关序列的应用矢量的时间分布方案，以便以较低的计算负担获得可接受的谐波性能。借助导出的开关序列，可以对 PWM 方法的设计进行全面的研究。因此，提出了一种使用五个有效矢量的 SVPWM 方法，具有优异的谐波性能。给出了7.5kW双三相异步电机驱动器的仿真和实验结果，验证了理论分析的正确性和所提方法的有效性。