优化右侧步长调整系数的光伏MPPT控制算法

A control algorithm for photovoltaic maximum power point tracking with optimized right step adjustment coefficient

在跟踪最大功率点的过程中,最大功率点右侧跟踪步长对稳定性有较大的影响。为了解决现有光伏最大功率点跟踪算法在跟踪过程中存在稳定性不理想的问题,基于现有双步长调整系数的变步长电导增量法,提出了一种优化右侧步长调整系数的光伏最大功率点跟踪控制算法,采用改进的收敛步长调整系数进行变步长跟踪,可在保证快速、无误判跟踪最大功率点的同时增加跟踪过程的稳定性,更好地解决了振荡问题,从而实现最大功率点的高效跟踪。对此算法进行仿真,仿真结果证明了算法的正确性和有效性。

In the process of tracking the maximum power point,the tracking step size on the right side of the maximum power point has a greater impact on stability.In order to solve the problem that the existing photovoltaic maximum power point tracking algorithm has poor stability during the tracking process,based on the variable step-size conductance increment method with the existing double-step adjustment coefficient,this paper proposed a photovoltaic maximum power point tracking control algorithm that optimized the right-step adjustment coefficient.In this paper,the improved convergence step adjustment coefficient was used to track by the variable step size,which could improve the stability of the tracking process while ensuring fast and error-free tracking of the maximum power point,and solved the oscillation problem better,thus achieving efficient tracking of the maximum power point.The algorithm was simulated and the results proved the correctness and effectiveness of the algorithm.