A Modified Wireless Power Transfer System for Medical Implants
| Autor: | Khaled Sedraoui, S. Ktata, Yosra Ben Fadhel, Salem Rahmani, Kamal Al-Haddad |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Resonant inductive coupling
Control and Optimization Computer science wireless power transfer Energy Engineering and Power Technology 02 engineering and technology lcsh:Technology DC/AC converter Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering coil Maximum power transfer theorem Wireless power transfer Electrical and Electronic Engineering Engineering (miscellaneous) Electronic circuit form factor lcsh:T Renewable Energy Sustainability and the Environment business.industry Amplifier 020208 electrical & electronic engineering Transmitter Electrical engineering active implant 020206 networking & telecommunications Building and Construction CMOS Electromagnetic coil power transfer efficiency resonant inductive coupling business Energy (miscellaneous) |
| Zdroj: | Energies Volume 12 Issue 10 Energies, Vol 12, Iss 10, p 1890 (2019) |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en12101890 |
| Popis: | Wireless Power Transfer (WPT) is a promising technique, yet still an experimental solution, to replace batteries in existing implants and overcome the related health complications. However, not all techniques are adequate to meet the safety requirements of medical implants for patients. Ensuring a compromise between a small form factor and a high Power Transfer Efficiency (PTE) for transcutaneous applications still remains a challenge. In this work, we have used a resonant inductive coupling for WPT and a coil geometry optimization approach to address constraints related to maintaining a small form factor and the efficiency of power transfer. Thus, we propose a WPT system for medical implants operating at 13.56 MHz using high-efficiency Complementary Metal Oxide-Semiconductor (CMOS) components and an optimized Printed Circuit Coil (PCC). It is divided into two main circuits, a transmitter circuit located outside the human body and a receiver circuit implanted inside the body. The transmitter circuit was designed with an oscillator, driver and a Class-E power amplifier. Experimental results acquired in the air medium show that the proposed system reaches a power transfer efficiency of 75.1% for 0.5 cm and reaches 5 cm as a maximum transfer distance for 10.67% of the efficiency, all of which holds promise for implementing WPT for medical implants that don&rsquo t require further medical intervention, and without taking up a lot of space. |
| Databáze: | OpenAIRE |
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