The Combination Of Super Capacitors And Batteries, Photovoltaic Energy Storage Control Study

Energy is the important material foundation for human existence and development. with the development of economy, coal, oil and other energy reduce gradually and environmental problems increase day by day, therefore people pay more and more pention on the renewable sources of energy . AS one of the important green energy, Solar energy has the character of never dried up and pollution free.Lead-acid battery is often used for the energy storage devices of independent photovoltaic system. As lead-acid battery has the defects of short life, difficult to maintenance and small output power density, in this paper we introduces a design for storage energy,which is the hybrid of lead-acid batteries and super capacitor. When photovoltaic generated power and bearing power pulse, the battery can work in optimizing charge-discharge state, and can effectively reduce charge-discharge minor cycle times. Super capacitor and parallel operation of lead-acid batteries, during charging, can slow solar cells to battery output voltage fluctuations influences; Discharge process, short-term output power is bigger, more have a super capacitance current can greatly reduce battery provides, the polarization. To solve renewable energy sources such as solar energy in the system, realistic feasibility. In order to real-time monitoring system various equipment work state, designed a USB data acquisition card, used to real-time monitoring of all parts of solar pv modules, facilitate the voltage performance parameters of the system maintenance.