en.Wedoany.com Reported - The Norwegian research team SINTEF, in collaboration with shipbuilder Vard, has developed a completely wireless magnetic charging system that allows electric vessels to recharge at sea without returning to port. The project, named "Ocean Charger," is specifically designed for service operation vessels that support offshore wind farms and platform supply vessels in the oil industry.

Giuseppe Guidi, a senior research scientist at SINTEF, stated that the research team conducted numerous tests and selected a solution that functions like conventional electrical contacts. The system uses sealed magnetic coils to replace traditional metal plug charging methods. Conventional plug-in systems are prone to mechanical wear, corrosion, leading to higher maintenance costs and poor reliability. The new magnetic system utilizes induction technology to charge directly at sea via sealed coils, which require no regular maintenance and are less susceptible to corrosion and wear. The coils on both sides of the charging station are waterproof.

Although the concept of the system is wireless, it relies on a series of reactions, performing power conversion through multiple stages. Electricity is converted from high-voltage direct current to a high-frequency magnetic field, which is then stabilized onboard the vessel. The ship can maintain a certain distance from the charger, completing the charging process without physical contact. A built-in intelligent management system coordinates the entire charging process to minimize energy loss during vessel charging.

Previously, battery-powered offshore vessels had to sail to nearby ports for recharging, which was not only time-consuming but also consumed significant battery power. By installing the magnetic devices on offshore wind turbines or offshore substations, the magnetic system enables vessels to recharge directly at their work locations. Researchers are focused on developing an efficient design, carefully selecting materials and components to allow the system to transmit high power through a compact surface.

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