•  
  •  
 

Abstract

Wireless power transfer has attracted more and more attention as a potential solution to electric vehicle charging due to its safety, convenience and the potential to automate this process. This review paper gives an overview of inductive and capacitive wireless power transfer technologies, especially focusing on hybrid wireless power transfer systems that integrate both approaches. The basic operating principles in both inductive and capacitive power transfer are covered with an emphasis on their advantages and inherent limitations with respect to efficiency, voltage and current stress, the tolerance of misalignment and the power capability. Building upon this background, the paper is limited to hybrid systems as an effective mechanism for taking advantage of both the advantages of inductive and capacitive coupling and reducing the respective disadvantages. Special attention is paid to compensation networks used in HWPT systems. Different compensation topologies are reviewed and analyzed in terms of the role they play in improving the power transfer capability, improving operating conditions to the favor of the system and improving the system stability. In addition, various losses mechanisms related to the hybrid systems such as copper losses, magnetic losses, dielectric losses, and power electronic losses are analysed in order to check its effect on the overall system efficiency. This review is aimed to give a clear and structured understanding of HWPT systems and to bring out their potential as a possible solution for high-efficiency wireless charging applications, especially in the field of electric vehicle systems.

Download

Included in

Engineering Commons

Share

COinS