Full
Outline
A single-stage power-controlled wireless power transfer (WPT) system for underwater environments is proposed, in which the output power can be kept constant when the mutual inductance, input frequency, and load change. Compared with the conventional underwater wireless power transfer (UWPT) system, this system can achieve input frequency adaptation and second-side power customization, and has a wider output regulation range, which can enable underwater devices including autonomous underwater vehicle (AUV) to better adapt to different charging conditions. This UWPT system uses an S-S compensation network, but the secondary side is connected in series with a switched-controlled capacitor (SCC). Secondary side frequency following is achieved by controlling the SCC, while the conduction angle of the semi-active rectifier (SAR) is adjusted to reconfigure the equivalent impedance, and then the SCC is further regulated to eliminate the excess capacitive reactance of the secondary side, which ensures the constant current characteristics of the system and thus achieves the output power regulation. The system is defined only by the single-stage power definition of the second-side, which effectively circumvents the underwater wireless communication. The feasibility of the UWPT system as well as the control strategy was finally verified by multi-environmental simulation experiments.
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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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