Rod Hower wrote: > Just for the record, the Dodge TEVan is separately excited. > Current limit is 300Amps and system voltage is 180Vdc > (typically 205Vdc open circuit and fully charged). The > biggest problem that I have noticed is arcing during regen. > The brushes are advanced for motoring operation, so in regen > it is not operating at it's optimum brush location. The > highest current that I have experienced in regen is 65 Amps at 210Vdc.
This is definitely a problem specific to your particular system then, because I achieved significantly higher regen currents during my test drive of the CEV MightE truck with the Zapi 96V 500A SepEx drive... I don't recall the exact values; I 'pegged' the 500A E-meter more than once during the drive, but can't say with certainty now if any of those events occured during regen... though there was that one instance when I tried out flipping the direction selector to reverse while coasting forward at a decent clip... ;^> (Randy had planted this idea in my head before I headed out in the truck, but warned me to brace myself first). Of course, I believe the Kostov SepEx motor has interpoles and/or compensating windings, so it should be relatively happy with neutral brush timing in either mode of operation. Cheers, Roger.
