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Outline
Aimed at the problems in an electric-field coupled wireless power transfer (EC-WPT) system for underwater unmanned vehicle (UUV) such as poor anti-offset performance and large leakage field radiation, a UUV EC-WPT system with anti-offset and leakage field shielding characteristics is proposed. First, a novel five-stage plate coupler suitable for UUV is given, the ten coupling capacitors generated by the coupler are simplified, and an equivalent model of the coupler is established. Second, the EC-WPT system with dual LC compensation is taken as an example, a calculation method for system output parameters is formulated, and circuit simulation is also carried out. The electric field around the system is analyzed using the finite element method according to the electrode plate voltage obtained from simulations, so as to verify the leakage field shielding characteristics of the novel coupler. Results show that there is almost no leakage field inside the UUV in the system. Finally, an experimental device was built to verify the feasibility of the proposed scheme for wireless power supply to UUV from the aspects of energy transmission performance and anti-offset performance. In the experiment, 74 W power transmission was achieved, with an efficiency of 85.6%. When the energy receiver was offset from three dimensions, the system’s output power and efficiency changed little.
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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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