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This paper presents the design, modeling, analysis, and experimental validation of an inductive resonant wireless power transfer (WPT) system to power a micro aerial vehicle (MAV). Using WPT, in general, enables longer flight times, virtually eliminates the need for batteries, and minimizes down time for recharging or replacing batteries. The proposed WPT system consists of a transmit coil, which can either be fixed to ground or placed on a mobile platform, and a receive coil carried by the MAV. The details of the WPT circuit design are presented. A power-transfer model is developed for the two-coil system, where the model is used to select suitable coil geometries to maximize the power received by the MAV for hovering. Analysis, simulation, and experimental results are presented to demonstrate the effectiveness of the WPT circuitry. Finally, a wirelessly powered MAV that hovers above the transmit coil is demonstrated in a laboratory setting.
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Analysis of resonance and anti-resonance frequencies in a wireless power transfer system: analytical model and experiments
This letter presents a magnetic coupling wireless power transfer system (WPTS) configured in a series-series topology and operating at both resonance and anti-resonance frequencies which occur due to the parasitic coil capacitances. It is shown that their effects on system dynamics cannot be ignored. A mathematical model based on circuit theory is developed and the analytical solution for the power transferred to an electrical load is derived. A technique for extracting coil parameters such as resistance, inductance and capacitance from impedance measurements is proposed. The complete model is first experimentally verified and then used for further numerical investigations.
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- Award ID(s):
- 1651438
- PAR ID:
- 10089448
- Date Published:
- Journal Name:
- IEEE Transactions on Circuits and Systems II: Express Briefs
- ISSN:
- 1549-7747
- Page Range / eLocation ID:
- 1 to 1
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.1109/TCSII.2018.2878662
