Implementation And Energy Control Of Off-grid PV System

With economic development,primary energy depletion,environmental pollution, renewable and clean energy sources more and more attention.Solar gets highly attention for its inexhaustible and pollution-free characteristics.However power generation has a strong burst in the power supply,and continuous supply and the quality of the power exist many problems on account of the vulnerability to climate,environment and time effects of photovoltai.User-facing side of the off-grid photovoltaic systems,due to their flexibility and cost-saving features,the PV industry will become a hot research and application.This article is begin with outlining the development of photovoltaic industry status and its development prospects,then analyzes the maximum power point tracking principle and method,subsequently put forward energy control method of off-grid PV system based on energy efficiency,battery charge and discharge times,and load electricity demand,in order to ensure that the load electricity in the premise,to improve the utilization efficiency of photovoltaic power generation and to extend battery life as far as possible.In the system works and on the basis of theoretical analysis, this paper proposes off-grid PV system’s basic structure,designed for maximum power point tracking,system power deployment,testing and other hardware module electrical parameters to achieve the maximum power point tracking solar power,as well as system energy photovoltaic power generation,energy storage system and the load supply-side optimization control.Experimental results show that off-grid PV system designed can achieve better power generation,energy storage and load management.