Abstract
In order to realize the constant voltage and high-efficiency power output of dual pickup dynamic inductive coupled power transfer (ICPT) system, a constant voltage output control strategy based on optimal efficiency is proposed in this paper. By adjusting the buck modules of different pickup circuits, the output voltage and efficiency characteristics of the system are analyzed. According to the analysis of the characteristics, a constant voltage control strategy is proposed, so that the system can maintain the optimal state of efficiency while outputting constant voltage. Finally, an experimental platform is designed to verify the control strategy. The experimental results show that the control strategy proposed in this paper can achieve the two objectives of constant output voltage and optimal efficiency at the same time. The dynamic ICPT system with transmission power of 180 W can maintain the constant voltage output and the overall efficiency can be maintained above 93%.
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