In the recent years, the introduction of an alternative energy such as clean energy has become a major challenge. In this context, several sources of energy are often associated to provide the required energy to the grid. However, output of photovoltaic system and wind turbine is influenced by meteorological conditions. As a result, the power quality exchanged between those sources and the grid might be affected. In this paper, we suggest a new structure of hybrid multi-level inverter in order to solve problems due to the rapid variation of exchanged powers. The main objective of the proposed structure is to limit the sudden fluctuation of injected power into the electrical network via a new structure of multi-level inverter based on intermediate supercapacitor energy storage. The control strategy of this hybrid inverter applies linear matrix inequalities technique to control the injected or absorbed currents by the storage system as well as space vector modulation technique to generate pulses for switches. Presented results highlight the efficiency of the proposed system in suppressing short-term power fluctuations.

中文翻译：

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与多源系统相关的新型混合四电平逆变器的概念和控制

近年来，引入清洁能源等替代能源成为一项重大挑战。在这种情况下，通常会关联多种能源以向电网提供所需的能源。然而，光伏系统和风力涡轮机的输出受气象条件的影响。因此，这些电源与电网之间交换的电能质量可能会受到影响。在本文中，我们提出了一种混合多电平逆变器的新结构，以解决由于交换功率的快速变化而引起的问题。所提出结构的主要目标是通过一种基于中间超级电容器储能的多电平逆变器的新结构来限制注入电力网络的突然波动。这种混合逆变器的控制策略应用线性矩阵不等式技术来控制存储系统注入或吸收的电流，以及空间矢量调制技术为开关生成脉冲。所呈现的结果突出了所提出的系统在抑制短期功率波动方面的效率。