Maximum Efficiency Tracking for Wireless Power Transfer Systems With Dynamic Coupling Coefficient Estimation

By X. Dai, Xiaofei Li, Yanling Li, Aiguo Patrick Hu. IEEE transactions on power electronics, 2018

228 citations recorded by the source corpus.

Maximum efficiency tracking is an important issue for wireless power transfer (WPT) system. Traditional maximum efficiency tracking method normally focuses on load impedance matching with fixed coupling condition. However, WPT system is a loosely coupling system, the coupling coefficient varies due to relative movement between the primary and secondary sides. Unknown to this variation may result in failure of the tracking. In this paper, a novel maximum efficiency tracking method is proposed with integrated dynamic coupling coefficient estimation. This method can take almost all requirements for maximum efficiency tracking into account including adaption for coupling coefficient and load variation, and output controllability. The tracking method is easy to implement because no additional circuitry or measurement is required. Experimental results have verified the correctness of the proposed coupling coefficient estimation method. And the maximum efficiency tracking results show the system can achieve a good performance against coupling coefficient and load variation with the proposed tracking method.

Subfields: Automotive Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/7e071d7ef69a4423a32e421e5c75d7453f9e75d5

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In Automotive Engineering

  1. Apostolos T. Georgiadis
  2. Zhen Zhang
  3. Carlo Cecati
  4. Hongliang Pang

In Electrical and Electronic Engineering

  1. Apostolos T. Georgiadis
  2. Zhen Zhang
  3. Carlo Cecati
  4. Hongliang Pang

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