A novel active-neutral-point-clamped (ANPC) seven-level inverter based on the principle of switched-capacitor is proposed in this paper, which employs ten switches, two diodes and one switched-capacitor. With an input amplitude of V'DC the peak output from this topology can reach 1.5VDC through the switched-capacitor. Compared with other APNC inverters, the novel topology has lower switch stress and a higher Boost capability. Without the auxiliary control methods, the voltage-sharing capacitors in the DC link can be self-balanced at 0.5V'DC and the switched-capacitor can be self-balanced at VDC. The operation principle for the proposed topology and the self-balancing mechanism for capacitors are described in detail. Through a comparison with the latest topologies, the advantages of the proposed topology such as fewer components, a higher Boost capability, lower overall voltage stress and a self-balancing capability of capacitors are also demonstrated, showing that it is suitable for distributed generation, electric vehicles and other applications. Finally, the Boost capability of this topology and the self-balancing capability of capacitors were verified by simulation and experimental results.
| 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 |