A Self-Oscillating Approach for Wireless Power Transfer
Sähkötekniikan korkeakoulu | Master's thesis
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Radio Science and Engineering
NanoRad - Master’s Programme in Nano and Radio Sciences (TS2013)
AbstractWe introduce a robust wireless power transfer scheme that theoretically works for any load and receiver position. We show that capacitive wireless power transfer systems with these new properties can be implemented by modifying simple operational Amplifier oscillator circuits. The load and the wireless power link are incorporated into the feedback of the oscillator. The operating frequency adopts to the best possible working condition when the load or receiver position change. We prove the concept by deriving a theoretical model and implementing the same experimentally. The experimentally measured frequency of operation and transferred power agrees well with our analytical solutions.
Thesis advisorLiu, Fu
robust wireless power transfer, self oscillations, adaptive tuning, capacitive coupling