摘要
在光伏并网发电的过程中,由于光伏发电的不稳定性,需要对光伏电池的最大功率点进行跟踪控制,来使得电池的利用率最高,提高系统的发电效率。分析比较了MPPT各种基本方法的优缺点,基于常用算法中的不足,设计了一种双模式MPPT控制算法。是以恒定电压法和自适应变步长扰动观测法为基础,并引入防误判机制来增强系统对环境突变的适应能力。论文通过搭建模型,验证了算法的正确性和有效性。
In the photovoltaic power generation process, due to the instability of power, it requires photovoltaic maximum power point tracking control, which is to improve the battery utilization and power generation efficiency. The advantages and disadvantages of various MPPT methods are analyzed and compared. And then, a new algorithms is proposed based on them, it uses a dual mode MPPT algorithm which includes constant voltage method and adaptive variable step disturbance method. It also introduces anti-misjudgment mechanism to enhance the ability of adapting to environmental catastrophe. The correctness and effectiveness of the model is verified by building simulation model.
出处
《电力学报》
2015年第2期111-116,共6页
Journal of Electric Power
关键词
光伏发电
最大功率跟踪控制
变步长
恒定开路电压法
扰动观测法
防误判机制
PV
maximum power tracking control
variable step size
constant voltage method
disturbance observer methods anti-misjudgment mechanism
