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首页> 外文期刊>Power Electronics, IET >Two different non-shoot-through operating modes for generating changeable general boost factor in switched Z-source inverters with modified modulation technique
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Two different non-shoot-through operating modes for generating changeable general boost factor in switched Z-source inverters with modified modulation technique

机译：两种不同的非直通操作模式，可通过改进的调制技术在开关Z源逆变器中生成可变的通用升压因子

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摘要

In this study, a new switching pattern for switched Z-source inverters (ZSIs) is proposed. By this technique, the switched ZSIs can generate general boost factor with different functions. The proposed modulation technique is a general technique and can be applied for all types of switched boost inverters, switched ZSIs and active ZSIs. The mentioned inverters do not use additional passive elements in comparison with the conventional ZSI. Moreover, variable boost factor with ability of changing both switching factor and shoot-through duty cycle makes these inverters more valuable than transformer-based ZSI. Applying the proposed technique leads to make different non-shoot-through (nST) operating modes which are named adjacent-nST and non-adjacent-nST operating modes. The extraction of equations and steady-state analyses for a type of switched ZSIs in different operating modes are presented. In addition, the design considerations and calculation of critical inductance in the new switching pattern are given. The logical diagram of the switching pattern is introduced and comparison between different types of switched ZSIs with the proposed switching pattern from different aspects is done. Finally, the simulation and experimental results are given to show the good agreement between the theoretical and measured results.
机译：在这项研究中，提出了一种用于开关Z源逆变器（ZSI）的新开关模式。通过这种技术，切换后的ZSI可以生成具有不同功能的通用升压因子。提出的调制技术是一种通用技术，可以应用于所有类型的开关升压逆变器，开关ZSI和有源ZSI。与传统的ZSI相比，上述逆变器不使用其他无源元件。此外，可变的升压因数能够同时改变开关因数和直通占空比，这使得这些逆变器比基于变压器的ZSI更有价值。应用所提出的技术导致产生不同的非击穿（nST）操作模式，其被称为相邻nST和非相邻nST操作模式。给出了在不同工作模式下一类开关ZSI的方程式提取和稳态分析。另外，给出了新开关模式下的设计考虑和临界电感的计算。介绍了切换模式的逻辑图，并从不同方面对不同类型的切换ZSI与所提出的切换模式进行了比较。最后，通过仿真和实验结果表明理论和实测结果吻合良好。

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