离网型太阳能发电系统的设计与应用

Design and application of networktype solar power generation system

离网型太阳能(光伏)发电系统是一种与国家电网未连接的发电方式。它通过光伏组件接受太阳光,将其转化为直流电能,但此直流电不稳定,随着太阳光线的强弱发生变换。因此通过控制器将直流电控制在稳定值,输送给直流负载供电或蓄电池,因为太阳能发电系统未接入国家电网,受环境的影响,晚上或阴雨天不能正常发电,因此,通过蓄电池可将控制器稳定后的多余电量存储在蓄电池中,以满足未能发电情况下使用。实际应用中,存在大量的交流负载,因此太阳能发电系统需要对所发的直流电进行转换,此系统应用离网型逆变器将稳定后部分直流电转换成所需的交流电,提供给交流负载使用从而实现了它的实际价值,给人民生活(特别是偏远地方)带来了方便。

The off-grid solar （ pv） power generation system is a way to generate electricity that is not connected to the state grid.It receives sunlight from the photovoltaic module and converts it into direct current energy,but this direct current is unstable and changes with the intensity of the sun＇s rays.So by the controller to control the dc stable value,delivery to the dc load power supply or battery, because solar power system is not connected to the national grid,the influence of the environment,at night or rainy day can＇t normal power, therefore,through the battery controller can be stable after the excess electricity is stored in the storage battery,in order to meet the failure to use to generate electricity. Practice, exists in a large number of ac load,so the need to direct current （ dc） of solar power generation system,this system application and off-grid inverter will be stable after the part of the direct current into alternating current, provide for the use of ac load so as to realize its real value,to the people＇s life brought convenient （especially in remote places）.