基于DSP的光伏并网发电系统数字锁相技术

Research on Digital PLL of the Grid-connected PV Power Generation System Based on DSP

随着能源危机的进一步加剧和光伏系统并网发电成本的持续降低,光伏并网发电技术的应用越来越广泛。为了实现光伏逆变系统与电网的可靠并联运行,采用了一种基于DSP芯片TMS320C2407A实现数字锁相的方法,并通过实验作了验证,实验结果表明,锁相精度高,稳定可靠。

Recently, the shortage of energy becomes a serious problem. Because the cost of photovoltaic module decreases continuously, the grid-connected PV power generation system is used widely. To ensure the grid-connected PV power generation system working reliably, the output current of PV power generation system must be in the same phase as the grid. A digital PLL is implemented based on TMS320C2407A DSP circuit. The experimental results show that the PLL method has high accuracy and reliability.