A New Variable Step and Period Method of MPPT in Photovoltaic Power System
A New Variable Step and Period Method of MPPT in Photovoltaic Power System
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发表时间：
2011
影响因子：
6.7
通讯作者：
Qing Qi-xiang
中科院分区：
文献类型：
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作者：
Qing Qi-xiang
在光伏发电系统中，最大功率点跟踪（MPPT）往往涉及跟踪步长和周期。步长和周期直接影响跟踪速度和输出功率的稳定性。为了提高跟踪速度和增强输出稳定性，提出了一种变步长和变周期跟踪的新方法。并以电导增量法为例，将该方法应用于MPPT系统。Matlab软件仿真和光伏能源硬件系统实验证明，该方法显著提高了输出功率的稳定性，提高了快速变化环境下的跟踪速度。
In the photovoltaic power system,the maximum power point tracking(MPPT) is often involved in tracking step length and cycle.Step length and cycle directly affects tracking speed and power output stability.In order to in-crease the tracking speed and enhance the power output stability,a new method of variable step length and tracking cycle is brought forward.And with conductance incremental method as an example,the new method is applied in MPPT system.Simulation of Matlab software and experiment in photovoltaic energy hardware system prove that the new method remarkably enhances the stability of output power and increases the tracking speed at the fast changing environment.