Class E Inverter Single Capacitor Wireless Power Transmission System Based on Stable Ground
Single-capacitor coupled wireless energy transmission has been widely noticed due to its advantages of simple coupling mechanism and absence of cross-coupling capacitance. However, because of its lack of traditional electrical circuit, the coupling mechanism electrical energy transmission mechanism...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10977955/ |
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| Summary: | Single-capacitor coupled wireless energy transmission has been widely noticed due to its advantages of simple coupling mechanism and absence of cross-coupling capacitance. However, because of its lack of traditional electrical circuit, the coupling mechanism electrical energy transmission mechanism and the establishment of equivalent model are not completely unified by theory and experiment at present. And the efficiency of the existing single capacitor coupled wireless energy transmission systems are relatively low. In this paper, for the single-capacitor coupling mechanism, based on the self-capacitance theory, an equivalent model of the coupling mechanism is proposed for the case where both the transmitter and receiver have a stable ground, and a single-capacitor wireless energy transmission system based on a class E inverter is designed. The resonant circuit is selected as a CLC-LC-LC high-order resonant network. The paper firstly describes the system topology design and the equivalent capacitance of the coupling mechanism, and then the whole circuit topology is equivalent to a classical Class E inverter for parameter design. The feasibility of the selected parameters is verified by simulation. Finally, an experimental prototype is built based on the parameter design, and the experiment shows that the system has high voltage gain, with an efficiency up to 77%; it can still provide high output power with half of the lateral offset of the pole plate; and it possesses high load range, with an efficiency of more than 70% in the load range of <inline-formula> <tex-math notation="LaTeX">$160\Omega $ </tex-math></inline-formula>-<inline-formula> <tex-math notation="LaTeX">$220\Omega $ </tex-math></inline-formula>. |
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| ISSN: | 2169-3536 |