摘要
在光伏并网发电系统中,为了实现光伏系统与电网电压的可靠并网运行,要求并网逆变器输出电流与电网电压同频同相.为此采用了一种基于DSP芯片TMS320F2812实现软件锁相的方法,并通过实验作了验证,实验结果表明,锁相精确度高,稳定可靠,证明了该方法的可行性和有效性.
In the photovoltaic grid-connected system, to ensure the grid-connected PV power generation system working reliably, the output current of grid-connected inverter is required to have the same frequency and phase as the voltage of electricity net. A software phase-locking loop is implemented based on TMS320F2812 DSP circuit; the experimental results show that this method has high accuracy and reliability. It is demonstrated the project is feasible and valid.
