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Improving Torque in a Magnetic Resonance Based Motoring System by Detuning From Resonance

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Resonant wireless power transfer (RWPT) allows for efficient transfer of electrical energy over an air gap, by optimally tuning a receiver resonator. Next to transferring electrical energy to supply or… Click to show full abstract

Resonant wireless power transfer (RWPT) allows for efficient transfer of electrical energy over an air gap, by optimally tuning a receiver resonator. Next to transferring electrical energy to supply or charge a device, previous work demonstrated that the induced current in receiver resonators can be directly applied to exert mechanical torque on a rotor axle. The peak torque however only occurs when both receiver coils are uncoupled because the magnetic coupling of two resonators strongly affects their current. In this work, we investigate the effect of intentionally detuning the resonators coils in a RWPT motoring system on its torque generation capability. Overall, the detuned system is more robust, and significant gains in average (72.1%), and maximum torque (40.6%) are obtained.

Keywords: system; improving torque; motoring system; torque magnetic; magnetic resonance; resonance

Journal Title: IEEE Transactions on Energy Conversion
Year Published: 2021

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