Acquired Electronics360

Industrial Electronics

Wireless Charging Facilitates Power Transfer for Ferry

27 September 2017

The first commercial ferry in the world operating with high power wireless charging capability for its batteries Wärtsilä's wireless charging system can transfer more than a MW of electrical energy. Source: WärtsiläWärtsilä's wireless charging system can transfer more than a MW of electrical energy. Source: Wärtsilähas been tested with Wärtsilä’s automatic wireless induction charging system.

The system, based on inductive power transfer, can transfer more than a MW of electrical energy.

Tests on the Norled, Norway-owned 85-m long hybrid powered coastal ferry MF Folgefonn involved technology designed to maintain efficient power transfer at distances of 50 cm between the two charging plates built into the side of the vessel and the quay.

The technology obviates the cable connection between the vessel and shore, and reduces maintenance since wear and tear to physical connection lines is eliminated.

“During recent years, wireless charging has been introduced for cars, buses and trains. We have now made this possible for marine vessels. The main benefits for customers are up to 20 percent more utilization of the available charging time, increased operational safety, and greater system reliability. There is an ongoing trend to equip coastal ferries with battery powered and hybrid propulsion since they are particularly affected by environmental regulatory demands. Wireless charging will, therefore, create considerable value for operators of hybrid ferries,” said Ingve Sørfonn, Senior Technical Officer E&A, Wärtsilä Marine Solutions.

To contact the author of this article, email

Powered by CR4, the Engineering Community

Discussion – 0 comments

By posting a comment you confirm that you have read and accept our Posting Rules and Terms of Use.
Engineering Newsletter Signup
Get the Engineering360
Stay up to date on:
Features the top stories, latest news, charts, insights and more on the end-to-end electronics value chain.
Weekly Newsletter
Get news, research, and analysis
on the Electronics industry in your
inbox every week - for FREE
Sign up for our FREE eNewsletter


Date Event Location
12-16 Aug 2018 Vancouver, Canada
11-13 Sep 2018 Novi, Michigan
27 Sep 2018 The Reef, Los Angeles
03-05 Oct 2018 Boston, Massachusetts
26 Oct 2018 Old Billingsgate
Find Free Electronics Datasheets