This thesis analyses several MPPT algorithm, compares the advantage, disadvantage and application environment.Finally, a variable-step Perturbation and Observation algorithm is used.

• 论文分析了几种常见的最大功率跟踪算法，比较其优缺点及应用环境，最后根据本系统的实际使用环境采取变步长的扰动观察法。