The Simulation And Design Of Wind/solar Power System

The comprehensive utilization of renewable energy has an important role to sustainable development and environmental protection of our country.Using renewable energy to comprise independent power supply system has vital significance to solve power supply problem of the remote districts. The solar and wind energy can be used widespread in the present renewable energy. They have good complementarity in the resource and technical aspects, the practice proved that wind/solar hybrid generation system is a kind of extremely economical generation system, so it is essential to study the wind/solar hybrid generation system.Taking comprehensive utilization of the renewable energy as the guidelines, combining the characteristics of wind and solar energy, being on the basis of the principle of wind/solar hybrid generation system, this thesis analyses the working way of the wind/solar hybrid generation system in producing,transforming and stocking.In the thesis, the characteristics and basic principle of wind/solar hybrid generation system are analyzed. when the wind speed is small, the output voltage is small,so that it cannot achieve the enough harging voltage,the boost converter is used to solve this problem.The boost converter can enhance the output voltage, advance the operating point of the system. To simplify the system circuit and the procedure of maximum power tracking, the working mode of wind and solar in double harness is adopt on the circuit which can track the total power.The math model of the battery, wind power generation and photovoltaic ray are established. The wind/solar hybrid generation system is simulated with the MATLAB/Simulink.In the situation of satisfing normal power supply, reasonable match is necessary to the design of wind/solar hybrid generation system.The thesis gives the detailed explanation to the choice of major component capacity. According to the climatic conditions of Tianjin area and the load assumed, the match computation to the small wind/solar hybrid generation system is carried. To satisfy the request of the load electricity,the appropriate capacity of wind power generation unit and photovoltaic ray are used. In addition, the periphery electric circuits are designed, such as driving circuit, sampling circuit, power supply circuit and signal processing circuit.