I am assisting someone to design a light 3-wheel EV that should be able to run city speeds,
no more than 40 MPH is needed and the weight will probably be under 1000 lbs (plus occupants). Not very aerodynamic but that should not be a problem at these speeds. I have some idea of what components can be used - battery pack should be Lithium to allow a good range and the voltage can be selected to match the performance of the motor/controller. At a minimum (to maintain constant speed) I am estimating about 3kW of power is needed, for (leisure) acceleration and hill climbing I am estimating about 10kW peak power. Since price is an important design criterium, my inclination is to see if one of the kits to give Golfcarts higher performance would be sufficient - most likely that or a similar DC motor setup will be used for this design. This means probably a battery pack of between 48 and 72 Volts. If necessary field weakening to get the motor the higher performance needed for acceleration (like a kick-down) while normal operation on the nominal voltage will give the more steady-state performance at lower current. Any other recommendation for affordable yet durable motor and controller? It is expected that the vehicle must be capable to run 200k mi without frequent overhaul. Thanks for any advice, Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com <http://www.proxim.com> Email: [email protected] Private: http://www.cvandewater.info <http://www.cvandewater.infom> Skype: cor_van_de_water Tel: +1 408 383 7626 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140606/63964d70/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
