本发明公开了一种自适应扰动频率和步长的最大功率点跟踪(MaximumPower Point Tracking，MPPT)方法，特别涉及太阳能光伏电池的最大功率点跟踪方法，属新能源技术领域。所述MPPT方法是采用如下控制方法：每次扰动(改变光伏电池输出电压参考值)后，在判断光伏电池输出电压进入稳态后再开始计算扰动前后功率的差值，保证功率变化方向判断的准确性；通过对功率差值进行累加，准确获得每次扰动过后功率的变化方向；根据功率差值累加到参考值的时间，实时调整扰动步长，根据光伏电池输出功率的大小，实时调整功率累加值的参考值，可以实现快速、精确跟踪到最大功率点，且在最大功率点附近扰动频率和扰动步长最小，有效避免扰动引起的功率损失，实现光伏电池输出功率的最大化。
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