太阳能发电用逆变电源的工程师指南
以可再生能源为基础的家庭能源系统,如太阳能和风能,正越来越受到消费者的欢迎,并将得到政府机构越来越多的支持。
在这篇文章中,电源逆变器将太阳能的背景下进行讨论,特别是因为它涉及到最新的低功耗微逆变器的架构,将光伏(PV)面板的最有意义的直流输出的交流信号作住宅用途。
微逆变器安装在每个光伏面板和一般处理300 W微逆变器提供给那些想要开始小的可扩展性的好处,但有全DC / AC转换的最大功率点跟踪(MPPT)。许多人希望把多余的电力重新投入电网,这将加快投资回报(ROI)时间,并最终可以从电网依赖中解脱出来。这种技术将使我们屋顶上无处不在的建筑越来越接近。
Microinverters maximize the power collected from every panel and are not affected by a particular solar panel performing poorly. String inverters will be restricted to the actual power produced by the least effective solar panel within a string. If a single panel is dusty, defective, aligned differently, or a different model of solar panel, etc., it drags down an entire string. A microinverter’s individualized solar panel harvest will supply somewhere between a 5 percent and 25 percent increase in electricity output when compared to a string inverter configuration.
Solid-state inverters have been shown to be the enabling technology for putting PV systems onto the grid. A cost reduction per inverter Watt is, therefore, important to make PV-generated power more attractive (Figure 1)。
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