Under partial shading conditions, a multi-peak state will appear in the P-U curve of photovoltaic array. In this case, the conventional maximum power point tracking (MPPT) algorithm is prone to fall into local extremum, which cannot accurately track the maximum power point of a photovoltaic power generation system in time. Aimed at this problem, a MPPT control strategy based on an improved dung beetle optimizer (IDBO) algorithm is proposed. First, the targeted initialization of the dung beetle population is optimized, and the Levy flight strategy is introduced in the position update process. Through simulation verification and physical experiment verification on a MATLAB/Simulink platform, the IDBO algorithm can find the global maximum power point faster and more stably than the traditional algorithm under both the static and dynamic conditions.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |