基于DSP的光伏发电并网逆变器的优化控制研究

Research on Optimal Control of DSP-based Photovoltaic Grid-connected Inverter

文章研究的太阳能光伏发电并网全桥逆变器使用一种电流内环、电压外环的双闭环调节器下的重复控制综合优化策略,采用负载电流解耦的内环电感电流反馈和状态反馈解耦控制方法,以多功能EG8010数字化芯片为控制核心。文章设计了该逆变器的全部电路,仿真表明该逆变器输出电压波形质量好,动态响应快,抗干扰能力强。

The study of photovoltaic grid-connected single-phase full-bridge inverter is carried out un- der repetitive control and optimization strategy with double closed-loop regulator （outer voltage loop and inner current loop）, through the method of inner-loop inductor-current feedback and state feed- back decoupling control for load current decoupling, and by using multifunctional EG8010 digital chip as kernel controller. This research has designed the whole circuit of the inverter, and shows high- quality output voltage waveform, fast dynamic response and strong anti-interference capability of the inverter through simulation.