摘要
单周控制的单级全桥光伏并网系统具有容量大、效率高、成本低等优点。在分析单周期控制工作原理的基础上,建立单相单极性光伏并网系统的数学模型,给出了对控制效果影响较大的输出电流的检测方法,基于PSIM软件平台对控制算法进行了仿真,并将算法应用到6kW单相单极性光伏并网系统的电流控制。仿真和样机实验结果均表明该方法具有良好的动静态特性。
Single-stage grid-connected photovoltaic （PV） systems with one cycle control （OCC） have advanta- ges, including large capacity, high efficiency, and low cost. Based on the analysis of OCC strategy, the mathe- matics model of single-phase single-stage grid-connected photovoltaic system is established. The output current detection method is given. The control strategy is simulated with PSIM to validate its feasibility. A 6 kW grid connected inverter was designed. Simulation and experiment results prove that the method has good dynamic and static characteristics.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2012年第3期97-100,共4页
Proceedings of the CSU-EPSA
关键词
单周控制
数字控制
并网逆变器
电流控制
one-cycle control （OCC）
digital control
grid connected inverter
current control
