<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Over the past few years, interest and research in wireless power transfer (WPT) have been rapidly incrementing, and as an effect, this is a remarkable technology in many electronic devices, electric vehicles and medical devices. However, most of the applications have been limited to very close distances because of efficiency concerns. Even though the inductive power transfer technique is becoming relatively mature, it has not shown near-field results more than a few metres away transmission. This review is focused on two fundamental aspects: the power efficiency and the transmission distance in WPT systems. Introducing the principles and the boundaries, scientific articles will be reviewed and discussed in terms of their methods and respective challenges. This paper also shows more important results in efficiency and distance obtained, clearly explaining the theory behind and obstacles to overcome. Furthermore, an overlook in other aspects and the latest research studies for this technology will be given. Moreover, new issues have been raised including safety and security.</p>
</abstract>

Over the past few years, interest and research in wireless power transfer (WPT) have been rapidly incrementing, and as an effect, this is a remarkable technology in many electronic devices, electric vehicles and medical devices. However, most of the applications have been limited to very close distances because of efficiency concerns. Even though the inductive power transfer technique is becoming relatively mature, it has not shown near-field results more than a few metres away transmission. This review is focused on two fundamental aspects: the power efficiency and the transmission distance in WPT systems. Introducing the principles and the boundaries, scientific articles will be reviewed and discussed in terms of their methods and respective challenges. This paper also shows more important results in efficiency and distance obtained, clearly explaining the theory behind and obstacles to overcome. Furthermore, an overlook in other aspects and the latest research studies for this technology will be given. Moreover, new issues have been raised including safety and security.

A Review of Methods and Challenges for Improvement in Efficiency and Distance for Wireless Power Transfer Applications

The Department of Electrical Engineering and Electronics

Power Electronics and Drives

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Over the past few years, interest and research in wireless power transfer (WPT) have been rapidly incrementing, and as an effect, this is a remarkable...

A Review of Methods and Challenges for Improvement in Efficiency and Distance for Wireless Power Transfer Applications

Published Online: Oct 10, 2020

Page range: 1 - 25

Received: May 06, 2019

Accepted: Aug 23, 2019

DOI: https://doi.org/10.2478/pead-2020-0001

Keywords
wireless power transfer, inductive power transfer technique, efficiency, distance, safety, security

© 2020 Sokol Kuka et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A Review of Methods and Challenges for Improvement in Efficiency and Distance for Wireless Power Transfer Applications

Published Online: Oct 10, 2020

Page range: 1 - 25

Received: May 06, 2019

Accepted: Aug 23, 2019

DOI: https://doi.org/10.2478/pead-2020-0001

Keywordswireless power transfer, inductive power transfer technique, efficiency, distance, safety, security

© 2020 Sokol Kuka et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
wireless power transfer, inductive power transfer technique, efficiency, distance, safety, security