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This paper compares the characteristics of serial, parallel and LCC compensation topologies of secondary-side in wireless powering systems with a constant-current primary-side. The topologies characteristics of power, efficiency and load are carefully analyzed and detailed presented. And the correctness of theoretical analysis is verified by simulations. This study results can guide the selection...
The improvement of the coil quality factor results to a higher efficiency for wireless power transfer(WPT) system[1–3]. Additionally, adding a suitable magnetic core into the coil can effectively enhance the mutual inductance and improve the efficiency of WPT system[4–7]. The high frequency current is un-uniform in the wire due to the external magnetic field. As a result, the conductive area of the...
Although 60 W wireless power transfer was demonstrated in 2007, still there is no equivalent circuit model for a sub-meter air-gap, hundreds of Watts, high efficiency wireless system. A design-oriented circuit model is needed for this technology to evolve. This paper proposes an equivalent circuit model for the wireless system and analyzes the system based on the proposed model. The proposed model...
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