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Two switched-inductor quasi-Z-source inverters

机译：两个开关电感准Z源逆变器

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摘要

In this study, two topologies are presented for switched-inductor quasi-Z-source inverters, namely a ripple input current switched-inductor quasi-Z-source inverter (rSL-qZSI) and a continuous input current switched-inductor quasi-Z-source inverter (cSL-qZSI). The proposed inverters possess high boost voltage inversion ability and a lower voltage stress across the active switching devices. Compared with a conventional switched-inductor ZSI, the proposed SL-qZSIs for the same input and output voltage provide a continuous input current and a reduced voltage stress on the capacitors. Moreover, the proposed inverters can overcome the startup inrush current problem but a conventional SL-qZSI cannot overcome this. This study presents the operating principles and analysis, and compares them with the conventional ZSIs. In order, to verify the performance of the proposed converters, a 60 W scaled-down laboratory prototype was constructed and, to test both the configurations it employed a 36 Vdc input and an ac output line-to-line voltage of 83 Vrms. The peak-to-peak input current ripple of the rSL-qZSI and cSL-ZSI is 126.3 and 59.8%, respectively. The experiment results verified that the proposed inverters have high step-up inversion ability, lower voltage stress on the capacitors and lower input current ripple.
机译：在这项研究中，针对开关电感准Z源逆变器提出了两种拓扑，即纹波输入电流开关电感准Z源逆变器（rSL-qZSI）和连续输入电流开关电感准Z源逆变器。源逆变器（cSL-qZSI）。所提出的逆变器具有高升压电压逆变能力和跨有源开关器件的较低电压应力。与传统的开关电感器ZSI相比，建议的SL-qZSI在相同的输入和输出电压下可提供连续的输入电流，并减小了电容器上的电压应力。此外，提出的逆变器可以克服启动浪涌电流问题，但是常规的SL-qZSI不能克服这一问题。这项研究提出了工作原理和分析，并将其与常规ZSI进行了比较。为了验证所提出的转换器的性能，构建了60 W缩小比例的实验室原型，并且为了测试两种配置，它采用了36 V dc 输入和交流输出线至线电压为83 V rms 。 rSL-qZSI和cSL-ZSI的峰峰值输入电流纹波分别为126.3和59.8％。实验结果证明，该逆变器具有较高的升压逆变能力，较低的电容器电压应力和较低的输入电流纹波。

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