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As the interface of microgrid photovoltaic power generation system, inverter control strategy directly affects the stability of gridconnected system. The stability of gridconnected inverter is easily affected by the internal and external parameters of the system, especially when the gridconnected inverter adopts LCL filter, the design and operation conditions of the system become more and more complex. In this paper, an active disturbance rejection control strategy based on weighted average current is proposed to solve the disturbance problem of highorder gridconnected inverter system. Firstly, based on the WACC control principle, the system is reduced from third order to first order. At the same time, the internal and external disturbances of the inverter system are regarded as generalized disturbances of a single structure, and the control law is used to adjust the parameters of the closedloop system. Finally, the effectiveness of the control strategy is verified by simulation and experiment.
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| 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 |
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