Volume 18, Issue 1 (March 2022)                   IJEEE 2022, 18(1): 2236-2236 | Back to browse issues page

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Abstract:   (1870 Views)
The promising element of the infrastructure of unmanned electric vehicles is wireless chargers. The central part of such systems is a resonant circuit that provides wireless power transfer. The article discusses a set of criteria used for making the rational choice of the resonant circuit parameters. Such criteria include the efficiency, the current transfer coefficient, the excess voltage on the resonant circuit capacitors over the input voltage, the ratio between the transmitting circuit current and the receiving one. For the resonant circuit with fixed coils size and fixed resonant frequency, the families of curves were obtained via parametric analysis to show how these criteria change depending on the inductance and capacitance of the resonant circuit. The obtained dependencies allow choosing the rational inductances and capacitances of the resonant circuit, providing for a given size and a given value of the input voltage the highest conveyed power with the highest efficiency at the minimum voltage class of capacitors and the minimum current of semiconductor switches. The results of the parametric analysis were confirmed experimentally.
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  • A set of criteria providing a formalization of multi-criteria task while designing wireless chargers taking into consideration energy efficiency and technical restrictions.
  • A new mathematical description for the above criteria applied to wireless power transfer system with serial topology using transfer functions allowing analysis of the resonant circuit in the frequency domain.
  • The curves that show how the criteria change depending on resonant circuit parameters providing a rationalization for selecting the optimal inductances and capacitances relation of the resonant circuit.

Type of Study: Research Paper | Subject: Autonomous Vehicles
Received: 2021/07/15 | Revised: 2021/10/12 | Accepted: 2021/09/26

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