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Fundamental modulation strategy with selective harmonic elimination for multilevel inverters

机译:具有选择性谐波消除功能的多电平逆变器基础调制策略

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摘要

This study presents a novel fundamental modulation strategy with selective harmonic elimination (SHE) for multilevel inverters. Compared with conventional schemes, more kinds of stepped waveforms can be adaptively synthesised and it is more possible to obtain the optimal solutions for the SHE problem, especially at low-modulation indices. The control purpose, SHE and fundamental voltage control, for a cascaded 11-level inverter is formulated as multi-objective optimisation problem which is solved by using shuffled frog leaping algorithm in this study. The theoretical and experimental results are presented to confirm the validity of the proposed modulation scheme.
机译:这项研究为多电平逆变器提出了一种具有选择性谐波消除(SHE)的新颖基本调制策略。与常规方案相比,可以自适应地合成更多种步进波形,并且更有可能获得针对SHE问题的最佳解,尤其是在低调制指数下。将级联的11级逆变器的控制目的,SHE和基本电压控制公式化为多目标优化问题,该问题是通过改组蛙跳算法解决的。给出了理论和实验结果,验证了该调制方案的有效性。

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