Analysis and modulation of the buck-boost voltage source inverter (BBVSI) for lower voltage stresses
Analysis and modulation of the buck-boost voltage source inverter (BBVSI) for lower voltage stresses
复制标题
用于降低电压应力的降压-升压电压源逆变器 (BBVSI) 的分析和调制
DOI：
10.1109/icit.2015.7125216
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Ahmed Abdelhakim
中科院分区：
文献类型：
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作者：
Ahmed Abdelhakim
可再生能源需要电力电子逆变器是研究目标的轨道，以实现最佳运行。存在两种常用的逆变器;电流源逆变器（CSI）和电压源逆变器（VSI）。第一种仅支持升压能力，另一种支持降压能力，但由于这些可再生能源的输出电压变化很大，因此必须具有降压-升压能力。这种降压-升压能力需要使用上述逆变器，并增加一级来修改能源输出，这大大降低了整体效率。代替这种两级功率转换操作，可以使用Z源逆变器（ZSI）获得单级操作。所谓的ZSI利用阻抗网络来实现这种能力。该阻抗网络包括四个无源元件和半导体开关，其相对庞大且昂贵。本文提出了另一种逆变器拓扑结构的分析和调制方案，称为降压-升压电压源逆变器（BBVSI），以获得降压-升压能力，在一个单级功率转换操作与较少的无源元件和较少的半导体器件额定值。BBVSI拓扑结构仅利用两个无源元件和一个半导体开关就能实现ZSI的功能，但具有一定的优越性，并与ZSI拓扑结构进行了比较。BBVSI拓扑的性能进行评估，使用MATLAB/Simulink模型。
Renewable energy sources entail the power electronics inverters are the orbit of research objectives for optimum operation. Two commonly used inverters exist; the current source inverters (CSI) and the voltage source inverters (VSI). The first one supports only the boost capability and the other supports the buck capability, but due to the high variation of the output voltage of these renewable energy sources a buck-boost capability is a must. This buck-boost capability requires the enforcement of the aforementioned inverters with an additional stage for the amendment of the energy source output, which greatly reduces the overall efficiency. Instead of such two stage power conversion operation, a single stage operation could be obtained using the Z-source inverter (ZSI). The so-called ZSI exploits an impedance network to achieve such capability. This impedance network comprises four passive elements and a semiconductor switch, which is relatively bulky and costly. This paper proposes the analysis and the modulation scheme of another inverter topology, called the buck-boost voltage source inverter (BBVSI), to get the buck-boost capability in a single stage power conversion operation with less passive elements and less semiconductor devices ratings. The BBVSI topology exploits only two passive elements in addition to a semiconductor switch to give the same function of the ZSI with some merits over it. Moreover, this paper compares the BBVSI topology with the ZSI topology. The performance of the BBVSI topology is evaluated using MATLAB/Simulink models.