This article presents a new circuit topology for high voltage gain active switched boost quasi Z-source inverter (qZSI) and a pulsewidth modulation (PWM) technique. The higher boosting capability with a lower number of elements, the continuous source current, the less voltage stress across the devices, and having the common ground are the main advantages of the proposed structure. The voltage gain of the proposed inverter is twice that of the conventional capacitor-assisted qZSI (sCA-qZSI). Other benefits of the proposed inverter over the sCA-qZSI are the reduction of Z-source passive components and shoot-through current. Compared to the conventional active switched inductor boost qZSI, the proposed inverter has higher output voltage and also lower shoot-through current, while it has fewer components (one fewer inductor, two fewer diodes, but one more capacitor). The boost factor of the proposed inverter is more than twice that of the classic ones. Besides, a high gain PWM technique is proposed, which can be applied to any types of Z-source inverters. Both the simulation and experimental results of the proposed inverter under the proposed PWM technique are examined to validate their operation.

中文翻译：

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高增益 PWM 方法和有源开关升压 Z 源逆变器，器件电压应力较小


本文介绍了一种用于高电压增益有源开关升压准 Z 源逆变器 (qZSI) 的新电路拓扑和脉宽调制 (PWM) 技术。所提出的结构的主要优点是元件数量较少、升压能力较高、源电流连续、器件上的电压应力较小以及具有公共接地。所提出的逆变器的电压增益是传统电容器辅助 qZSI (sCA-qZSI) 的两倍。与 sCA-qZSI 相比，所提出的逆变器的其他优点是减少了 Z 源无源元件和直通电流。与传统的有源开关电感升压qZSI相比，所提出的逆变器具有更高的输出电压和更低的直通电流，同时其元件数量更少（少一个电感器，少两个二极管，但多一个电容器）。所提出的逆变器的升压因数是传统逆变器的两倍多。此外，还提出了一种高增益PWM技术，可应用于任何类型的Z源逆变器。对所提出的 PWM 技术下所提出的逆变器的仿真和实验结果进行了检查，以验证其运行。