Multilevel inverters (MLIs) have replaced conventional two-level inverters for medium-voltage high-power industrial applications. One of the best modulation techniques for MLIs is the space vector modulation (SVM). Although SVM has its own advantages, it has been overlooked for much simpler carrier-based modulation schemes in the industry. Nearest level modulation (NLM) is a simple alternative, which is functionally similar to SVM. In this paper, a new generalized SVM algorithm is presented, in which the SVM is achieved using the concept of NLM. A generalized switch matrix is introduced to derive gate pulses for the inverter, which further simplifies the algorithm. The algorithm is tested and verified for a three-phase, three-level, and five-level neutral-point-clamped inverters in both simulation and hardware.

中文翻译：

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中性点钳位多电平逆变器使用最近电平调制概念的基于广义开关矩阵的空间矢量调制技术

对于中压大功率工业应用，多电平逆变器 (MLI) 已取代传统的两电平逆变器。MLI 的最佳调制技术之一是空间矢量调制 (SVM)。尽管 SVM 有其自身的优势，但它却被业界忽略了更简单的基于载波的调制方案。最近电平调制 (NLM) 是一种简单的替代方案，其功能类似于 SVM。在本文中，提出了一种新的广义 SVM 算法，其中 SVM 是使用 NLM 的概念实现的。引入了广义开关矩阵来导出逆变器的门脉冲，这进一步简化了算法。该算法在仿真和硬件中针对三相、三电平和五电平中性点钳位逆变器进行了测试和验证。