Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A New Maximum Inductive Power Transmission Capacity Tracking Method

  • Ameri, Mohammad Hassan (Department of Electrical and Computer Engineering, Tarbiat Modares University) ;
  • Varjani, Ali Yazdian (Department of Electrical and Computer Engineering, Tarbiat Modares University) ;
  • Mohamadian, Mustafa (Department of Electrical and Computer Engineering, Tarbiat Modares University)
  • Received : 2015.08.20
  • Accepted : 2016.03.28
  • Published : 2016.11.20
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Abstract

In certain applications, such as IPT-based EV charger (IPTEC), any variation in alignment and distance between pickup and charger primary leads to a change in leakage and magnetic impedance magnitudes. The power transmission capacity is not always at the maximum level because of these variations. This study proposes a new low-cost tracking method that achieves the Maximum Inductive Power Transmission Capacity (MIPTC). Furthermore, in the proposed method, the exchange of information between load and source is not required. For an application such as IPTEC, the load detected by the IPTEC varies continuously with time because of the change in state of the charge. This load variation causes a significant variation in IPT resonant circuit voltage gain. However, the optimized charging output voltage should be kept constant. From the analysis of the behavior of the IPT circuit at different working frequencies and load conditions, a MIPTC operation point that is independent of load condition can be identified. Finally, the experimental results of a developed prototype IPT circuit test show the performance of the proposed method.

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References

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