New Multilevel Mixed Topology Development to Improve Inverter Robustness for Domestic Photovoltaic Installations

• 作者: Adelphe Caldeira Ambroise Schellmanns Nathalie Batut Sébastien Jacques Zheng Ren
• 来源期刊: 电力能源(英文)
• 学科: 医学
• 关键词: DOMESTIC PV Applications Common Mode Currents DECOUPLING CAPACITANCES MIXED 5-Level INVERTER
• 年，卷（期）: dlnyyw_2013,（5）
• 页码范围: 1-6
• 页数: 6页
• 分类号: R73

摘要

Multilevel inverters are well used in grid connected domestic photovoltaic applications because of their ability to generate a very good quality of waveforms, reducing switching frequency, and their low voltage stress across the power devices. However, this kind of inverter has to be modified to both limit common-mode currents and improve the robustness of the system. This paper presents a new mixed 5-level inverter that meets these challenges. The operating principle of the converter is proposed. Several experimental measurements are described to validate this new concept. The output voltage and current and the THD of the output voltage are particularly discussed.