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A bidirectional isolated resonant converter with variable mode and wide voltage range was proposed. The proposed converter has the advantages of BOOST circuit and flyback current feed topology. By reusing the pre-storage and flyback energy feedback of the resonant inductor，it can improve the gain from the battery side to grid side and the power density of the converter，while also reducing the current circulation. The converter adopts fixed frequency pulse width modulation and has multiple working modes，which is suitable for wide range output. the working principle of the converter was first introduced and the output gain when the energy flows in different directions was analyzed. Finally，on the premise of meeting the charge and discharge of the battery in the home distributed energy storage system，the devices and control parameters were designed to verify the correctness of the theoretical analysis.
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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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