基于FPGA和神經(jīng)網(wǎng)絡(luò)逆控制的微型逆變器并網(wǎng)控制研究
[Abstract]:Large quantities of toxic pollutants from fossil energy production and consumption are exacerbating air pollution. As a renewable energy, clean, pollution-free solar energy has attracted wide attention all over the world. The use of solar power is the most common form of solar energy. As an important part of the photovoltaic micro-inverter system, the design and control of the micro-inverter have a direct impact on the efficiency and grid-connected quality of the whole photovoltaic power generation system. In this paper, the advanced neural network inverse control method is applied to the control of micro-inverter. The simulation results show that the control method can improve the grid-connected power quality of micro-inverter. The application of neural network inverse control in practical micro inverter is also tested. First of all, the classification of micro-inverter, according to the advantages and disadvantages of DC/DC transform circuit and DC/AC converter circuit, and the key points of micro-inverter design, The topology of the current-source high-frequency chain micro-inverter composed of flyback converter and full-bridge inverter is determined, and the common control methods of micro-inverter are described. A neural network inverse control method is proposed and applied to the grid-connected research of micro-inverters. Secondly, according to the topology of the micro-inverter, the model is built, which shows that the micro-inverter system is reversible. On this basis, the simulation model of micro inverter is built by using Matlab, the inverse model of neural network is established, and the simulation research of micro inverter system under neural network inverse control is carried out under various working conditions. It is shown that this method can improve the grid-connected quality of micro-inverter. Finally, a micro inverter experiment platform based on FPGA and neural network inverse control is designed. The hardware circuit and software design of the experiment are described in detail, and the communication protocol between FPGA and single chip microcomputer is described in detail. On this basis, the micro inverter grid-connected experiment is carried out on the experimental platform and the experimental results are recorded.
【學(xué)位授予單位】:華北電力大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TM464
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