To get steady alternating current which can be used for common A.C. load, usually people use controllor, inverter, storage battery, etc. to form a steady photovoltaic system.

• 为了得到稳定的可供常规交流负载使用的交流电，通常采用控制器、逆变器、蓄电池等形成稳定的光伏发电系统。