Abstract Dual-buck inverters feature some attractive merits, such as no reverse recovery issues of the body diodes, free of shoot-through, high efficiency and low leakage current. However, volume and weight of the system, power density must be reconsidered in the dual-buck based single-phase grid-tied photovoltaic (PV) inverter, because its twice inductor capacity and bulky electrolytic capacitor for the inherent double-frequency ripple power decoupling. Thus, a new integration of active power decoupling buffer and grid-tied photovoltaic inverter with single-inductor dual buck topology is proposed in this letter. The working principle is explained, and a new single-loop direct input current ripple control method for active power ripple decoupling buffer is proposed. Finally, the effectiveness is verified by experimental results.

中文翻译：

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功率解耦缓冲器与并网光伏逆变器的集成，采用单电感双降压拓扑和单回路直接输入电流纹波控制方法

摘要 双降压逆变器具有一些吸引人的优点，例如没有体二极管的反向恢复问题、无直通、高效率和低漏电流。然而，在基于双降压的单相并网光伏 (PV) 逆变器中必须重新考虑系统的体积和重量、功率密度，因为其两倍的电感容量和用于固有双频纹波功率解耦的笨重电解电容器. 因此，本文提出了一种新的集成有源功率去耦缓冲器和具有单电感双降压拓扑的并网光伏逆变器。阐述了工作原理，提出了一种新的有源电源纹波去耦缓冲器的单回路直接输入电流纹波控制方法。最后，通过实验结果验证了有效性。