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The high frequency resonant current in coupler would inevitable results in interaction of electromagnetic force (EMF), leading to short service life, poor security and low reliability of wireless power transmission (WPT). It may be worse when electromagnetic shielding (EMS) materials are used. The mechanism and characteristics of the EMF on various EMS materials are revealed. Based on Lorentz force...
Metal obstacles will be heated due to the eddying effect, if its location is between two coils belonging with the wireless power transfer system applying in the electric vehicle, and safety problems may occur easily. If metal obstacles is large, there will be efficiency decline, frequency detuning and other issues. So it is very important to detect the metal obstacles. In this paper, the theory about...
The high-current pulse generator which is used in non-destructive testing technique of electromagnetically induced acoustic emission (EMAE) is designed based on the economical efficiency and practicability. Using the energy storage of the capacitor, the pulse high current which the EMAE needs can be achieved by capacitor discharging instantaneous. Theoretical analysis and experiment of the generator...
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