| With the decrease of resource on the earth, the problem of environmental pollution is becoming more and more prominent. As clean and rich resource, solar energy will not exhausted and has been regarded as the most important research projects by workers in relevant areas. It has also been strongly given support by both the government policy and the construction of intelligent power supply network. Since there are some difficulties in practical operation of domestic photovoltaic power generation, this project is trying to use a resonant coupled power transmission(MCR-WPT) mode to transmit photovoltaic power and to solve the problem of household photovoltaic power generation.Firstly, In systematically analyzing a circuit model of MCR-WPT system, and through the research on mode coupling theory established the mathematical model of MCR-WPT system based, detailed analysis of the relationship between the load resistance and the transmission efficiency of the MCR-WPT system, and put forward the concept of efficacy product, to make the transmission efficiency and transmission power achieve the maximum value of the objective, and further optimization of the system. In the end, the conclusion is drawn that the influence of the receiving for transmitting is not negligible.Secondly, in order to pursue higher transmission distance, efficiency and power, the method of adding an enhanced coil is used. And the general mathematical model of MCR-WPT system with enhanced coil is presented. Taking the MCR-WPT system with double enhanced coil as an example, based on the establishment of the mathematical model, the influence of various parameters on the transmission efficiency is obtained by simulation analysis.F Finally, according to the data, an experimental platform of the MCR-WPT system including the oscillation circuit, the power amplifier circuit, the rectifying filter circuit and the voltage stabilizing circuit is designed, which makes the solar energy storage battery as the excitation source. Through the simulation of the hardware components and the range of the parameters, the specific types of hardware devices are selected, taking LTC6900 as the oscillating chip, IRF840 as the switching device, and LM7805 as the regulator.By establishing the MCR-WPT system model of solar energy as the excitation source and applying the method of combining theoretical research and experimental exploration together, this project studied the mechanism of MCR-WPT in detail, as well as discusses and experiments on how to enhance the transmission efficiency. |
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