Design of a switchable driving coil for Magnetic Resonance Wireless Power Transfer
Chapter, Peer reviewed
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Original versionZhaksylyk, Y., Hanke, U., & Azadmehr, M. (2019). Design of a switchable driving coil for Magnetic Resonance Wireless Power Transfer. I 2019 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) (s. 249-252). IEEE. https://doi.org/10.1109/WoW45936.2019.9030674
This paper presents design and analysis of a switchable inductor suited for active impedance matching in magnetic resonance wireless power transfer systems. The switchable inductor is compact and can be used as both driving coil at transmitter side and load coil at receiver side. We first present the concept through design, simulation and measurement of a three loops coil where the inductance is selected using switches. This model of the driving coil is used to study the inner couplings between the loops. The coil was fabricated on PCB with inductances between 130-324 nH at the MHz region. In addition, we demonstrate a 10 loop driving coil for driving a high quality resonator with an almost linear increase in their mutual inductance, which is verified by measurement results.