Vehicles that do have the need for cabin heat like four-wheelers and snowmobiles are prime candidates for electric conversion. The University of Alaska Fairbanks' latest electric snowmobile has a 51.5 km (32 mi) range at 32 km/h (20 mi/h) under optimal snow conditions. A Ski-Doo Renegade Sport 550F (wet weight: 232 kg (512 lb)) was modified. The NetGain WarP 7 DC-series motor is connected directly to the sprocket shaft using a Gates Poly Chain. The accumulator is configured to support 177.6 V using 72 Turnigy 5 A·h lithium-ion polymer hybrid cells, which utilize a gel electrolyte. The battery box, containting the 7.992 kW·h accumulator, comes off as one piece. Innovation was a key design concept as the team developed the first electric snowmobile on the Ski-Doo RevXP Chassis. This was a difficult design challenge with its tight pyramidal frame; however the result is having one of the most efficient snowmobile chassis available, running on electnc power. The design allowed for any part to be easily removed and replaced. The team developed a robust Battery Management System (BMS) based on the Peter Perkins open source work. This innovation consisted of modifying the programming for a user display that contains battery information, power monitoring and speed. Not content with current DC motor controllers the team utilized the Open ReVolt plans to come up with a reliable and safe unit. The 137 inch suspension was retained to allow for use of the GTX silent track technology and assist during the drawbar pull. Our innovations have kept our MSRP the lowest amongst the competition sleds. The snowmobile weighs a respectable 250 kg (550 lb) and has a top speed of 120 km/h (75 mi/h) and a noise level of less than 60 dB.


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    Title :

    Electric cars in arctic regions


    Contributors:

    Published in:

    Publication date :

    2012


    Size :

    4 Seiten, 2 Bilder, 4 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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