Wireless Power Supply for Implantable Biomedical Device Based on Primary Input Voltage Regulation

Design and Analysis of Efficient Pulse-driven Magnetically Coupled Resonant Wireless Power Transmission System

“…However, due to the loose coupling between coils and power transferring through non-magnetic material, the magnetic field energy and coupling coefficient are rapidly attenuated with the distance increasing, resulting in a short transmission distance limited to centimeters, even millimeters level. Currently the applications of electromagnetic induction WPT have attracted a wide range of explorations and developments not only in domestic area but also across the world [3][4][5][6], which mainly focus on the wireless charge system [7][8], medical treatment equipment [9][10][11], and so on.…”

Coil-Capacitor Circuit Design of a Transcutaneous Energy Transmission System to Deliver Stable Electric Power

“…Although transcutaneous energy transmission (TET) systems have been in development for several decades, these systems cannot be used for the Korean Total Artificial Heart (KTAH, Biomedlab, Korea) because the power consumption of the KTAH changes over a wide range, which causes the output voltages of TET to become unstable. As a result, the TET system for the KTAH needs another device to control their output voltage [1], [2].…”

“…To reduce this power loss and thus increase the transmission power, internal and external TET coils are used in resonant circuits, and TET operates at its resonance frequency [1], [5]. This basic TET concept has high energy transmission capability, but the output voltage changes markedly according to the load resistance [1], [2]. If the load resistance is too high, a very high voltage will be induced in the electrical device which may cause damage.…”

“…Therefore, a stable output voltage regardless of the load resistance or output power is a very important requirement for TET. Several TET systems have been developed and tested in continuous experiments to determine whether they can maintain a stable output voltage, but these TET systems need to measure the output voltage of internal TET and transmit the internal voltage to the external TET system [1], [2]. These TET systems require complex, sophisticated controllers and peripheral devices, so they have some risks in terms of their reliability and safety.…”

Finite Element Assisted Development of Omnidirectional Inductively Coupled Power Transfer Source

“…As some examples, applications include monorail systems, road lighting, people movers, electric vehicles and biomedical implantation [1][2] [6]. However, a majority of current applications tend to largely support uni-or bi-directional planar movement in load as opposed to three-dimensional (3D) load displacement [4][5]. This is due to a lack of omni-directional radiation provided by the electromagnetic structures.…”