From: Lee Hart >2600 lbs? My gawd; railroad locomotives don't have motors that big.<
Yep ,The logic behind it was that the diesel engine weighed that much .. so "we better get an electric motor about the same size ". The salesman from Baldor motors and his consultant ( all before my time ) seemed to feel that was what he needed. >I rather doubt that any normal controller will be able to deliver that kind of power for any length of time. They are all designed on the assumption that their peak power only needs to be available for a matter of seconds.< the truck got about 6 to 8 MPG I'm not thinking that it really needs ton's of power , just 3 or 4 times what a puck up might use . The motor is continuously rated at 300 hp but that is not what would we needed . I'm looking at it this way if the diesel engine 30% eff ,,a gallon of diesel is about 30 kwh energy so 10kwh to the axle would go 6 miles or 1.6kwh per mile or 96kw 500v 200 amps >I'd contact the motor manufacturer, for advice on what controller this motor was designed for. Otherwise, you're headed for some very expensive stumbling around in the dark.,< The salesman for the motor manufacturer is who talked him into this motor and for some reason the controller was not ever though of , now they are saying it will have to be custom made and will be the size of a small room . From: Jeff Major <So what controller was this project manager planning to use?< The Project manager is also the owner and driver ,, guess trucking is pretty lucrative . He seemed unaware that he would need a speed controller till I talked to him . >I'd scrap the DC idea and see if these guys would sell you an AC drive.? >http://www.balqon.com/?< Ya that looks good , But he has the motor and can't return it ,,, If it were me I'd have tried using 3 9" or 3 11" net gains with a 1k soliton on each one , maybe blowers on the motors From: Bruce EVangel Parmenter < http://www.e-moss.com/electric-powertrain < To bad he didn't do a little looking around , some neat companies out there ,, I'd like to see some finished trucks . Thanks I'll write them http://www.tm4.com/en/products.aspx http://www.tm4.com/en/co150en.aspx CO150 - Motor controller / inverter - Product specifications Maximum / nominal electrical power 150 kW / 90 kW Maximum output current 575 Arms http://uqm.com/products/full-electric/production/commercial-vehicles/ UQM PowerPhase HD systems are specifically designed for heavy-duty drive a Steve Clunn Merging the best of the past with the best of the future. www.Greenshedconversions.com _______________________________________________ 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)
