In the wide conversion range applications of traditional DC-DC converters, there is an urgent need for higher voltage gain, efficiency and reliability. A DC-DC converter based on a switching voltage doubling clamping unit is proposed and analyzed. In this topology, the switch voltage stress is low and the inherent duty cycle is small, which helps reduce switch losses and improve the converter efficiency. All the switch devices achieve voltage clamping, thus reducing the voltage spikes generated during switch transitions. Compared with coupled windings, the single-input inductor reduces the size of the converter and the input current ripple. The shared grounding of input and output terminals ensures the output reliability. Through a comparison with other typical converters and performance analysis with a combination of a 200 W experimental prototype, the feasibility and effectiveness of the DC-DC converter based on the switching voltage doubling clamping unit were validated.
| 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 |