Full
Outline
As a common power electronic converter, inverters are widely used in various scenarios where DC power supplies supply AC loads, as well as in AC motor speed regulating frequency converters and other instruments. Among them, Y-source inverter (YSI) has a simple structure and high efficiency, but it cannot suppress the starting inrush current well, which is easy to produce leakage inductance peak voltage, resulting in device damage and limited voltage boosting capability. The split-source inverter (SSI) uses fewer passive components, and can achieve the increase of the modulation index and the boost duty ratio at the same time, so the voltage gain can be adjusted more flexibly. However, due to the non-ideal state of the components and the limitations of the topology, the actual voltage gain is limited. Thus, a new type of quasi-split source inverter (QSSI) is proposed. The design of the inverter is a combination of Y-source impedance network and split-source structure, and a voltage clamp unit is introduced to improve voltage gain and solve the problem of voltage oscillation caused by leakageinductance resonance. In addition, QSSI adopts dual-buck structure (DBIS), which effectively inhibits the shoot-through current of the inverter bridge arm, thus improving the reliability of the whole converter. The feasibility of the inverter is verified by theoretical analysis, simulation and experimental results.
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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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