Research Of Solar Charge Controller Based On Adaptive Fuzzy Arithmetic

With the rapid development of socio-economic, the problems of the increasing energy consumption and deteriorating environment are coming to our world. This is a severe challenge for the sustained development of human, developing and making use of the new energy resources is the most effective way to solve this challenge. Solar energy is considered to be one of the most promising green energy, at the same time the solar photovoltaic technology is one of the most potential of renewable energy technologies.It is significant to research on improving theconversion efficiency of PV system.Firstly, introducing the composition of photovoltaic system, and researchingphotovoltaic array model and its output characteristics, at the same time, after deeply researching the characteristics of battery and charging methods, the phase charging method is used according to need of whole system. Secondly, in contrast to analyzing the conventional of the current maximum power tracking control methods, maximum power tracking control based on the adaptive fuzzy is proposed against the existence problem.The hardware design of charging controller, including detection module of signal,PWM drive module,control module of microchip and main topology of DC-DC module are designed, giving the forms of circuit. At the same time, operating modes of the main topology and the parameters of the circuit are analyzed and calculated and make the charging control system in a stable condition. In software, on the basis of the adaptive fuzzy arithmetic and phase charging method, programs of the maximum power point tracking and charging control are designed; In order to realize the real-time monitoring of charging, the PC monitoring program which through serial port based on VC++ is designed.Finally, checking and debugging the hardware circuit of controller system, at the same time, constructing the simulation model of the system by using MATLAB. The simulation results of the maximum power tracking control arithmetic show that adaptive fuzzy arithmetic is effective to get the maximum power point.