Two parallel interleaved two-level (2L) three-phase voltage source inverters (VSIs) can be analyzed as a single three-level (3L) VSI. A generalized carrier-based method is proposed in this paper for implementing different 3L pulsewidth modulation (PWM) techniques using two parallel interleaved 2L VSIs. The proposed method modifies the given three-phase reference signals of 3L VSI for implementation of the PWM technique using two parallel interleaved 2L VSIs. The influence of nonidealities on the equivalent 3L PWM switching sequences is also discussed. To overcome the effect of nonidealities, a new modified discontinuous PWM technique (MDPWM1) is proposed. The analysis of different performance indices is carried out for different 3L PWM techniques, and the key advantages of different PWM techniques are identified. Simulation and experimental results are also presented.

中文翻译：

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使用两个并行交错的 2L VSI 生成基于载波的 3L PWM 技术的通用方法

两个平行交错的两电平 (2L) 三相电压源逆变器 (VSI) 可以分析为单个三电平 (3L) VSI。本文提出了一种通用的基于载波的方法，用于使用两个并行交错的 2L VSI 来实现不同的 3L 脉宽调制 (PWM) 技术。所提出的方法修改给定的 3L VSI 三相参考信号，以使用两个并行交错的 2L VSI 来实现 PWM 技术。还讨论了非理想性对等效 3L PWM 开关序列的影响。为了克服非理想性的影响，提出了一种新的改进的不连续 PWM 技术 (MDPWM1)。对不同的 3L PWM 技术进行了不同性能指标的分析，并确定了不同 PWM 技术的主要优势。