Implementation of a fast and simple space vector modulation scheme for a three-phase five-level neutral point clamped inverter

2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI:10.1109/STA.2015.7505197

Zouhaira Ben Mahmoud, M. Hamouda, A. Khedher

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引用次数: 5

Abstract

Multilevel inverters are nowadays considered among the most promising power conversion topologies for medium voltages and high power ranges. This work presents a fast space vector modulation algorithm (SVPWM) implemented on a three-phase five-level neutral point clamped (5L-NPC) inverter. The novelty of the proposed algorithm deals with the identification method of the adequate two-level small hexagon. This method computes the distance between each small hexagon center and the tip point of the reference space vector to be synthesized by the modulation algorithm. Therefore, the selected small hexagon is the one which has its center closest to the reference vector tip point. The remaining procedures needed to obtain the switching sequences of the transistors' gates are quite similar to those utilized by previous SVPWM algorithms. Computer simulations performed on a numerical model of the converter showed the effectiveness of the proposed identification method.

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实现一个快速和简单的空间矢量调制方案的三相五电平中性点箝位逆变器

目前，多电平逆变器被认为是中压和大功率范围内最有前途的功率转换拓扑之一。本研究提出了一种在三相五电平中性点箝位(5L-NPC)逆变器上实现的快速空间矢量调制算法(SVPWM)。该算法的新颖之处在于处理了适当的两层小六边形的识别方法。该方法计算每个小六边形中心与调制算法合成的参考空间矢量尖端之间的距离。因此，选择的小六边形是其中心最接近参考向量尖端点的六边形。获得晶体管门的开关序列所需的其余程序与以前的SVPWM算法所使用的程序非常相似。对变换器的数值模型进行了计算机仿真，结果表明了所提出的识别方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)

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