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首页> 外文期刊>Journal of power electronics >New Generalized SVPWM Algorithm for Multilevel Inverters
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New Generalized SVPWM Algorithm for Multilevel Inverters

机译：多电平逆变器的新型通用SVPWM算法

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摘要

In this paper a new generalized space vector pulse width modulation scheme is proposed based on the principle of reverse mapping to drive the switches of multilevel inverters. This projected scheme is developed based on the middle vector of the subhexagon which holds the tip of the reference vector, which plays a major role in mapping the reference vector. A new approach is offered to produce middle vector of the subhexagon which holds tip of the reference vector in the multilevel space vector plane. By using middle vector of the subhexagon, reference vector is linked towards the inner two level sub-hexagon. Then switching vectors, switching sequence and dwell times corresponding to a particular sector of a two-level inverter are determined. After that, by using the two level stage findings, the switching vectors related to exact position of the reference vector are directly generated based on principle of the reverse mapping approach and do not need to be found at n level stage. In the reverse mapping principle, the middle vector of subhexagon is added to the formerly found two level switching vectors. The proposed generalized algorithm is efficient and it can be applied to an inverter of any level. In this paper, the proposed scheme is explained for a five-level inverter and the performance is analyzed for five level and three level inverters through MATLAB. The simulation results are validated by implementing the propose scheme on a V/f controlled three-level inverter fed induction motor using dSPACE control desk.
机译：基于逆映射原理，提出了一种新的广义空间矢量脉宽调制方案，以驱动多电平逆变器的开关。该投影方案是基于拥有参考矢量尖端的六边形中间矢量开发的，该中间矢量在映射参考矢量中起主要作用。提供了一种新方法来生成亚六边形的中间矢量，该中间矢量在多级空间矢量平面中保持参考矢量的尖端。通过使用子六边形​​的中间向量，参考向量被链接到内部二级子六边形。然后确定对应于两电平逆变器的特定扇区的开关矢量，开关序列和停留时间。之后，利用这两个水平阶段的发现，基于反向映射方法的原理直接生成与参考向量的精确位置有关的切换向量，而无需在n阶段阶段找到。在反向映射原理中，将亚六边形的中间向量添加到先前找到的两个级别切换向量中。所提出的广义算法是有效的，并且可以应用于任何级别的逆变器。在本文中，对所提出的五电平逆变器方案进行了解释，并通过MATLAB分析了五电平和三电平逆变器的性能。通过使用dSPACE控制台在V / f控制的三电平逆变器供电的感应电动机上实施建议的方案，可以验证仿真结果。

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