摘要
针对小功率光伏并网发电系统,提出一种基于数字信号处理器控制的新颖单相光伏并网逆变系统的设计。根据系统的结构和控制原理,设计出最大功率跟踪算法和锁相环的软件设计流程图。仿真和实验的结果表明,并网电流与电网电压基本同频同相,并网系统的功率因数近似为1,完全满足设计的要求。
According to low power photovoltatic grid-connected generation system, a design of novel single phase photovoltaic grid-connected inverter system is proposed based on the control of digital signal processor. On the basis of system structure and control principle, Maximum Power Point Tracking （MPPT） algorithm and the software design flowchart of the phase-locked loop are designed. The results of simulation and experiment show that the waveform of grid-connected curent has the same frequency and phase as the network voltage and the power factor of grid-connected system approximates to 1, which meets the design requirement entirely.
出处
《长春工业大学学报》
CAS
2008年第4期414-419,共6页
Journal of Changchun University of Technology
关键词
光伏并网
最大功率点跟踪
扰动观察法
数字锁相环
Sandia频移
photovoltaic grid-connected
MPPT
perturbation and observation method
digital phaselocked loop
Sandia frequency shift.
