Wireless charging of offshore wind service vessels

Abstract

This report discusses the possibility for wireless charging solutions for electric vessels, with a focus on offshore wind turbine service. Where the charging time is minimal and safety for crew is important. Different types of wireless technologies have been studied, where the Inductive power transfer (IPT) is shown to be the preferred technology. Inductive power transfer (IPT) grants a safe charging operation and provides high power density. Brief time between the turbines requires high power to extend the range for the vessel between the turbines. Technical design of inductive charging systems is discussed, and the general aspect of a solution developed for power transfer in the range of 4 kW to 110 kW is proposed. Various compensations were consulted from literatures on Electric boats and wireless power technology, Series-Series (SS) was adopted due to its high-power ability. The proposed wireless charging solution has been simulated and analyzed, a small-scale prototype has not been constructed due to Covid-19.