Journal
20TH INTERNATIONAL CONFERENCE ON MICRO AND NANOTECHNOLOGY FOR POWER GENERATION AND ENERGY CONVERSION APPLICATIONS (POWERMEMS 2021)
Volume -, Issue -, Pages 212-215Publisher
IEEE
DOI: 10.1109/PowerMEMS54003.2021.9658362
Keywords
Magnetoelectric; wireless power transfer; optimization; dynamic transmitter
Categories
Funding
- NSF [ECCS-1651438]
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Magnetoelectric transducers wireless power transfer systems offer a way to power small biomedical implants, but misalignment can reduce power delivery. A dynamic transmit coil using actuators can significantly increase power available to load compared to a static transmit coil. Experimental results show adding a servo motor to create a dynamic transmit coil can increase power by a factor of 2.4.
Magnetoelectric transducers (ME) wireless power transfer systems (WPTS) offer a way to power small biomedical implants. However, if the ME receiver becomes misaligned the wireless power delivered to the load can be dramatically reduced. A dynamic transmit coil using actuators and physically rotating or moving the transmit coil reduces the misalignment between the transmitter and the receiver. We model the expected power gains a WPTS has using a dynamic transmitter versus a static transmitter (a coil that does not move or rotate). We experimentally show that adding a single servo motor to make a dynamic transmit coil increases the power available to load by a factor of 2.4 over an otherwise identical static transmit coil for a given misaligned ME receiver in a WPTS.
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