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Internal model control of the Zeta Converter for the grid connection of photovoltaic panels

机译:Zeta Converter的内部模型控制,用于光伏面板的电网连接

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This paper presents the study and application of resonant controllers applied to a Zeta Converter designed to synthesize a rectified sine current compatible with the power grid in order to connect solar photovoltaic (PV) panels to it. Operating in discontinuous conduction mode, the Zeta Converter is connected to a full-bridge inverter so that one semi-cycle of the output current is inverted for every cycle of the power grid voltage. The assembly formed by PV panel and inverter is known as Module-Integrated Inverter (MII). Controller design is performed by the solution of an optimization problem with restrictions in the form of Linear Matrix Inequalities (LMIs) which guarantee the closed-loop system stability and performance. Experimental results of the developed controller, whose objective is reduction of the harmonic content on the inverter output current and synchronism with the power grid, point to the viability of this solution.
机译:本文介绍了应用于Zeta转换器的谐振控制器的研究和应用,该转换器设计用于合成与电网兼容的整流正弦电流,以便将太阳能光伏(PV)面板连接至该电网。 Zeta转换器以不连续导通模式运行,连接到全桥逆变器,因此对于电网电压的每个周期,输出电流的一个半周期都将反转。由光伏面板和逆变器组成的组件称为模块集成逆变器(MII)。通过以线性矩阵不等式(LMI)形式进行限制的优化问题的解决方案来执行控制器设计,以确保闭环系统的稳定性和性能。开发的控制器的实验结果表明了该解决方案的可行性,该控制器的目的是减少逆变器输出电流上的谐波含量并与电网同步。

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