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Outline
The wireless power transfer technology is usually employed to charge batteries that come with the load. First, to prolong the battery life, a novel compensation network with constant-current and constant-voltage output characteristics based on a bilateral LCC compensation network is proposed, which can achieve the switching of an introduction power transfer (IPT) system between a constant-current output mode and a constant-voltage output mode by using only one variable capacitor on the primary side, thereby reducing the number of components and AC switches. Second, the corresponding compensation parameter design principles are put forward based on the safe charging strategy, so as to guarantee that the fluctuation rates of load power and power factor angle are within the safety threshold during switching, which improves the charging safety of the system. Finally, a 30.0 W experimental prototype was constructed with constant output voltage of 20.21 V and constant output current of 1.14 A, thus verifying that the novel compensation network has characteristics in constant-current and constant-voltage output modes. During the switching between the output modes, the output power was 19.8 W with a power factor angle of 73.17° in the constant-current mode, and the output power was 26.1 W with a power factor angle of 76.57° in the constant-voltage mode. Therefore, the analysis of the compensation parameter design principle was verified.
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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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