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Symmetric hybridised design for a novel step-up 19-level inverter

机译：新型升压19级逆变器的对称混合设计

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摘要

Nowadays, reduction in number of dc voltage sources alongside boosting property of the output voltage with reduced circuit components are counted as the most important topological features for the new structures of multilevel voltage source inverters. Considering the above, this study presents a new configuration of such converters which can produce a step-up 19-level waveform of the output voltage with a contribution of only two same (symmetric) values of dc voltage sources and 12 power switches. The proposed structure is composed of a switched-capacitor (SC) and a floating-capacitor-based (FCB) cell integrated into two isolated sub-units that have been series with each other as an hybridised platform. Herein, the relevant involved switches of the SC and FCB sub-units are modulated on the basis of an hybridised pulse width modulation technique which facilitates a significant degradation in the total power loss dissipation. An appropriate boosting feature with a self-charge balancing capability of all integrated capacitors, reasonable number of required semiconductor devices, higher efficiency and less complexity are other advantages of the proposed step-up 19-level inverter. To verify the precise performance of the proposed topology under different types of loading conditions, apart from the theoretical analysis, several simulation and experimental results will also be presented.
机译：如今，减少直流电压源的数量以及降低输出电路组件的输出电压的增强特性被认为是多电平电压源逆变器新结构的最重要的拓扑特征。考虑到上述情况，本研究提出了这种转换器的新配置，该转换器可以产生输出电压的升压19电平波形，并且仅贡献两个相同（对称）值的直流电压源和12个电源开关。所提出的结构由一个开关电容器（SC）和一个基于浮动电容器的（FCB）单元组成，该单元集成到两个相互隔离的子单元中，这些子单元已彼此串联为一个混合平台。在此，基于混合的脉冲宽度调制技术来调制SC和FCB子单元的相关的所涉及的开关，该混合的脉冲宽度调制技术促进总功率损耗耗散的显着降低。所提出的升压19级逆变器的其他优点是，具有适当的升压功能，所有集成电容器均具有自充电平衡能力，所需半导体器件数量合理，效率更高且复杂度更低。为了验证所提出的拓扑在不同类型的负载条件下的精确性能，除了理论分析之外，还将提供一些仿真和实验结果。

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