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Thursday, August 1, 2019 

Nidec of Italy has developed and installed its Power Management System on the mega yacht 'Wider 165', optimising power management on the vessel and distributing it between the staterooms, propulsive system and recharging of batteries.

This enables the vessel to navigate in an eco-friendly manner, using power stored in its on-board batteries, reducing fuel consumption and emissions, making it possible to use all on-board systems without starting the engines.

The yacht can cruise in Zero Emission Mode (ZEM) for over four hours at a speed of 5 knots without producing any emissions to air or water, the electric propulsion allowing it to can enter protected areas that would otherwise be impossible to reach using traditional propulsion.

Innovative functions include:

Fast Charger mode recharges the batteries quickly by means of the on-board generators while ensurimng sufficient power to maintain electrical propulsion at cruising speed.

Zero Emission mode enables exclusive battery operation, or to rest at anchor in total silence with the diesel generators off, ensuring power to all the utilities on board for prolonged periods, e.g. during the night, or at anchor in the harbour.

Boost mode serves to maximise performance by using both sources of power on board, i.e. diesel generators as well as batteries.

Low Power mode, which, in case of malfunction of the electric propulsion system, can be controlled by two electrical motors with separate double winding, each driven by an independent inverter. In case of breakdown of one of the windings or one of the inverters associated with it, the propulsion motor can function equally at half power, thanks to the intrinsic redundancy of the system.

“This important project confirms our commitment to supporting innovation in an increasingly green viewpoint in the nautical sector, strategic for the promotion of more sustainable mobility. Thanks to the significant experience we have acquired in the realization of many contracts, in the first place with regard to overhauling the Italian Navy’s school ship Amerigo Vespucci, combined with consolidated experience in the development of advanced solutions for the storage and management of the power supply, we are able to offer custom solutions for safe, eco-friendly navigation everywhere in the world, reducing emissions to a minimum and lowering the impact on the marine ecosystem,” said Dominique Llonch, CEO of Nidec ASI. “Wider 165 and its twin Wider 150 are a great source of pride for me, because they illustrate the adaptability of our solutions, which have applications not only for ships and ferries, but also for vessels with unique technical needs and assemblies.”

Nidec's scope of supply included Common DC bus architecture, Inverters for generators of current (4 x 350kW), Inverters for main propulsion (2 x 531kW), Inverters and transformers for board grid 230V & 400V/Harbour grid, Battery management (544kWh), Power Management System (PMS, HMI and remote control), and Water cooled drive modules.

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