Claas tests semi-electric combine and full electric telehandler

Claas has developed and field tested a combine harvester fitted with a partial electric drive system. Working with Liebherr, it has also developed a 100% electric telehandler.Starting with the semi-electric combine, the concept allows self-propelled machines that normally runs on a 626hp (460kw) motor to run on a less powerful approx. 536hp (400kW) engine. Another benefit is that the smaller block can operate at the lower speed of 1,600 instead of the normal 1,800rpm.This smaller engine and reduced speed is compensated for by a 40kW electric motor. In tough conditions, such as in high-yielding areas, travelling uphill or emptying the grain tank, it provides the mechanical driveline with an short term electric power boost.Replacing the conventional maximum output provided by the diesel block, the electrical support enables peak loads to be bridged. Claas says that this allows the combine to consistently operate in the optimum performance range. Flattening peak loads, the hybrid concept is claimed to reduce fuel consumption by up to 10%.In easier conditions where the full power of the diesel engine is not needed, a generator converts excess power into electricity which is stored in the 3kWh battery.The semi-electric system operates in the low-voltage range (<60v touch voltage), and as such does not require the complex safety precautions associated with higher-voltage drives. Claas says that this means that maintenance can be carried out without any special training. It is still at the early concept and testing stages, and it is not yet known if the system will make it to the production stage.Scorpion 732eClaas is keeping an open mind when it comes to developing alternative drives, and lower down the power scale sees scope to power machines 100% electrically. Proof of this is the electric Scorpion 732e telehandler at Agritechnica, which we understand is closer to a market launch.Developed jointly with Liebherr, the battery-powered prototype is powered by two independent 90kW (121hp) electric motors – the first powers the wheels, the second the hydraulics.Lifting 3.2t to a height of around 7.0m, the top speed of the Scorpion 732e is 30km/hr.The 64kWh battery is said to keep the handler moving for up to four hours. Fitted with a 22kW on-board charger, Claas envisages the battery to be recharged using home-produced electricity generated from an on-farm solar system or biogas plant.For more up-to-date farming news click here and subscribe now to profi and save 47%.Share this: TwitterFacebookRedditWhatsApp by Steven Vale More From This Author