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首页> 外文会议>International Conference on Sciences and Techniques of Automatic Control and Computer Engineering >Single phase NPC inverter controller with integrated MPPT for PV grid connection
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Single phase NPC inverter controller with integrated MPPT for PV grid connection

机译：具有集成MPPT的单相NPC逆变器控制器，用于光伏电网连接

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摘要

This paper presents a single-stage three-level Neutral Point Clamped (NPC) inverter for connection to the electrical power grid, with integrated Maximum Power Point Tracking (MPPT) algorithm to extract the maximum power available from solar photovoltaic (PV) panels. This single-stage topology is more compact than the traditional topology, it was chosen because with the proper control strategy. It is suitable to connect the PV panels to the power grid. The paper describes the design of a 5 kW NPC inverter for the interface of PV panels with the power grid, presenting the circuit parameters and the description of the control algorithms. A phase locked loop control is used to connect the inverter into the grid. Then, a proposed DC Link voltage control to regulate the input voltage of the inverter. Although an MPPT algorithm was used to optimize the energy extraction and the system efficiency. Inverter Output Current control to produce an output current (current injected in the power grid) with low Total Harmonic Distortion (THD) implemented in a DSP. Simulation and experimental results verify the correct operation of the proposed system, even with fluctuations in the solar radiation.
机译：本文介绍了一种用于连接到电网的单级三电平中性点钳位（NPC）逆变器，该逆变器具有集成的最大功率点跟踪（MPPT）算法，可以从太阳能光伏（PV）面板中提取最大功率。之所以选择这种单级拓扑，是因为它具有适当的控制策略，因此它比传统拓扑更紧凑。将光伏面板连接到电网是合适的。本文介绍了用于光伏电池板与电网接口的5 kW NPC逆变器的设计，并给出了电路参数和控制算法的说明。锁相环控制用于将逆变器连接到电网。然后，提出了一种直流母线电压控制来调节逆变器的输入电压。尽管使用了MPPT算法来优化能量提取和系统效率。逆变器输出电流控制可在DSP中实现低总谐波失真（THD）的输出电流（注入电网的电流）。仿真和实验结果验证了所提出系统的正确运行，即使太阳辐射有波动也是如此。

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