KITE AND ELECTRIC YACHT SYSTEMS
You can learn more about kite and electric propulsion systems used by SeaBoater yachts here.
WORLDWIDE FIRST SERIALIZED KITE PROPULSION SYSTEM USAGE: The environmentally friendly KITE SOLUTION marks a new chapter in the history of boat propulsion systems. It not only assures zero emission and noiseless drive, but also eliminates the need for separate generator units for other onboard equipment. The “zero emission” kite mode allows a speed of 6-8 knots, using solely electric propulsion and a faster using kite-wind towing option. This is an extremely cost-effective renewable energy solution with a low environmental footprint.
Kite sail technical solutions do exist and have been successfully used by big cargo boats (over 10,000 tons) to cut 30 percent from fuel consumption and significantly reduce carbon dioxide emissions. Large kites can have the towing power equivalent to a 6,800 HP engine!
You can quickly become acquainted with kite technology advantages by looking at the few sketches below:
Electricity Production: When a boat cannot or does not wish to use kite tow power from a bigger kite, it can apply to a smaller kite solution for producing electricity. The electric generation system is used in periodic pump periods, switching between reel-out and reel-in of the tether. During reel-out, the kite is flying figure-eight maneuvers at a high-speed (70 to 90 km/h). This generates a high traction force (around 3.1 kN at the 7 m/s wind speed) which can be transformed into electricity by the connected generator. When getting to the maximum tether length, the kite is de-powered by releasing the rear (steering) lines and the entire wing rotates and aligns with the apparent wind. Using the drum with the generator module as a winch, the system enables the kite to be pulled back to the initial position to start the next pumping cycle. De-powering of the kite decreases the traction force during the reel-in by 75-80% and for that reason the energy used through the reel-in is only a part of the energy produced during the reel-out. The essential component of this technology is the automated management and synchronization of the drum/generator module and the flight dynamics of the kite.