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With the proposal of the "dual carbon" goal，the application of EVs is becoming increasingly widespread. In order to further reduce the charging cost of EVs so as to easing the charging cost burden of EV users，a coordinated control strategy for EV charging DC microgrid was proposed，which includes photovoltaic（PV），energy storage system（ESS）and power grid. This strategy can coordinate the input and output states of different ports based on the power relationship between each port，reduce the fluctuation of EV charging load through peak shaving and valley filling thus lowering the charging cost. Firstly，the control strategies of PV and ESS were introduced. Then，Monte Carlo algorithm was used to predict the charging load of EVs. Next，six modes and four voltage bands during microgrid operating was divided，mode switching condition and coordinated control strategies between each port were proposed. Subsequently，the feasibility of coordinated control was verified in Matlab/Simulink and Yuankuan semi-physical simulation platform. Finally，by calculating EV charging costs under five typical weather scenarios and comparing them with other literature，it was found that the proposed strategy can reduce charging costs by up to 28.1%，its significant effect in reducing costs was demonstrated.
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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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