Capacitive Wireless Power Transfer for Multiple Receivers
This demonstrator investigates capacitive wireless power transfer (CPT) using a single transmitter and multiple receivers. The system demonstrates efficient power delivery and selective power transfer to different receivers.
At a glance
Experimental multi-receiver CPT system operating at 1 MHz and designed for wireless power delivery in the range of several watts.
- Technology: Capacitive Power Transfer (CPT)
- Configuration: One transmitter and two receivers
- Operating frequency: 1 MHz
- Power delivery: 5 W with 89.5% efficiency
- Selective power delivery: 10 W with 88.7% efficiency
System overview
The experimental setup uses a resonant CPT system with one transmitter and two receivers. The system includes a high-frequency source, compensation circuits, a capacitive coupler and receiver-side rectification.
Experimental performance
Experimental results demonstrate efficient wireless power transfer under different operating conditions. A power transfer of 5 W was achieved with an efficiency of 89.5%. Selective power delivery was also demonstrated, achieving 10 W with an efficiency of 88.7%.
Multi-receiver operation
The system demonstrates how a single CPT transmitter can supply multiple receivers. Selective power delivery provides a method for controlling the power transferred to individual receivers in a multi-receiver wireless power transfer system.
Sources
Document based on:
- A. Van Ieperen, S. Derammelaere and B. Minnaert, "Coupling-independent capacitive wireless power transfer with one transmitter and multiple receivers using frequency bifurcation," IEEE Open Journal of Power Electronics, vol. 5, pp. 891–901, 2024.