5KW家用并网光伏发电系统设计

5KW home photovoltaic grid-connected power generation systemdesignabstractChina is a large developing country.Industrial development and nationalelectricity are very dependent on energy.Solar energy is a clean and renewableenergy source.The use of solar energy has promoted the development of thephotovoltaic power generation industry.Small domestic photovoltaic powergeneration can directly benefit Beneficial to the people this year has receivedwidespread attention.This article designed a photovoltaic grid-connected powergeneration system with an installed capacity of 5KW,which is enough to meet thedaily electricity consumption of ordinary families.The current situation and prospect of the photovoltaic power generationindustry are briefly introduced,and the modules of the photovoltaic grid-connectedpower generation system are designed.Including the principles of photovoltaic cellsand battery module design,main circuit design,and control system design,the maincircuit is composed of two parts:DC DC conversion and DC/AC conversion.DCDCincludes power supply circuit,voltage stabilization circuit,DC AC Including theinverter circuit and its driving signal generating circuit,the control system includesthe main control chip,control circuit,maximum power point tracking algorithm,spwm driving signal generation,etc.The design is simple,reliable and economical.Keywords:grid-connected photovoltaic;maximum power point tracking control;single-phase full-bridge inverter circuit