关于光伏系统光伏(PV)模块通常是小于一块胶合板。最常见的类型包含单个光伏电池硅电池的集合,每个生产约为0.5伏。细胞是由一层保护低铁钢化玻璃在一个铝框。当阳光照射一个细胞,它使硅摆脱电子,从而直流电流。平衡系统。一个逆变器直流转换成交流电(AC),负责电器、灯光和其他电气设备。在美国大多数安装并网,这意味着房子可以把权力从公用电网和光伏阵列。当光伏电池没有产生足够的电力,电网的区别。数组比房子更消耗时,流入电网的电力。离网系统,需要一个电池存储能力,银行更昂贵和更复杂。 Measuring power output. PV modules are rated by the amount of electricity they’re capable of producing, but actual performance may be less. The rated capacity is based on ideal circumstances, with the sun providing 1000 watts per square meter. Local weather conditions and site latitude can diminish or (more rarely) enhance PV module performance. Solar potential in the U.S. varies widely, from 7 kWh per square meter per day in parts of the Southwest to about 4 kWh per square meter in parts of the upper Midwest, New England and the Pacific Northwest. Where sunlight potential is lower, PV modules produce less electricity. The National Renewable Energy Laboratory produces a solar map with details for photovoltaic potential around the U.S. Cold days are best. The best PV weather is a very cold day when the atmosphere is crystal clear and the ground is covered with clean snow. A blue…