Abstract
Multi-coil wireless power transfer WPT systems have a lot of benefits compared to single coil WPT systems in the terms of power capacity, power transfer efficiency, and free position. In this paper, a comparative study of two different types of multi-coil WPT systems is proposed. The first system contains three transmitter coils on the primary side, while the other system contains one transmitter coil and two resonator coils. Both multi-coil WPT systems are studied in three different cases. The resonator coils lead to higher output power in addition to system efficiency when the receiver has misalignment with transmitter coils. When the receiver coil is aligned with the transmitter coil, resonator coils can decrease the output power and power transfer efficiency. The multi-coil WPT systems are working at a frequency of 6.78 MHz. Resonator coils are also designed under the operating resonance frequency.
Published Version
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