Wireless power transmission to an electromechanical receiver using low-frequency magnetic fields
| Autor: | Vinod R. Challa, David P. Arnold, Jose Oscar Mur-Miranda |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Power transmission
Engineering Radio receiver design business.industry Acoustics Transmitter Electrical engineering Low frequency Condensed Matter Physics Atomic and Molecular Physics and Optics Mechanics of Materials Magnet Signal Processing Torque Maximum power transfer theorem General Materials Science Mechanical resonance Electrical and Electronic Engineering business Civil and Structural Engineering |
| Zdroj: | Smart Materials and Structures. 21:115017 |
| ISSN: | 1361-665X 0964-1726 |
| DOI: | 10.1088/0964-1726/21/11/115017 |
| Popis: | A near-field, electrodynamically coupled wireless power transmission system is presented that delivers electrical power from a transmitter coil to a compact electromechanical receiver. The system integrates electromechanical energy conversion and mechanical resonance to deliver power over a range of distances using low-amplitude, low-frequency magnetic fields. Two different receiver orientations are investigated that rely on either the force or the torque induced on the receiver magnet at separation distances ranging from 2.2 to 10.2?cm. Theoretical models for each mode compare the predicted performance with the experimental results. For a 7.1?mApk sinusoidal current supplied to a transmitter coil with a 100?cm diameter, the torque mode receiver orientation has a maximum power transfer of 150??W (efficiency of 12%) at 2.2 cm at its resonance frequency of 38.4?Hz. For the same input current to the transmitter, the force mode receiver orientation has a maximum power transfer of 37??W (efficiency of 4.1%) at 3.1?cm at its resonance frequency of 38.9?Hz. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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