5kW Household Solar Grid-Connected Power Generation System

In the age of rapid development in science and technology,as a key driving force for social progress,the availability of energy resources has become increasingly scarce.As traditional energy is being gradually exhausted,people are urged to expedite the exploration of a kind of new sustainable energy.Solar power generation is characterized by the large scope of applicability and its zero-pollution benefits,making it the worthiest to study and research nowadays.This paper presents a description and analysis of a solar-energy grid-connected power generation system from the following two aspects,i.e.,its hardware circuit and control circuit.As for the hardware circuit,firstly,a study was conducted on all the hardware parts of the system,which mainly included a solar energy battery,a DC/DC conversion circuit,and an inversion circuit.They were selected after comparison.The detailed determination of the parameters for the 5 k W solar generation systems was elaborated in detail in this project.As for the control circuit,some control strategies were described,including the MPPT algorithm,and the control strategy of the inverter.The functions of the control system were also briefly introduced.In addition,this study also described the adoption of the most compatible DSP control chip for this system —— TMS320LF2407 A.Finally,the partial circuit functions were briefly simulated to test its performance in order to ensure the normal operation of the solar power generation system.