leitmotif
Member
Have one of those pipe dream projects of building / modifying existing chassis to make electric car.
Now that I have seen and am learning about PLC and VFD I want to use both in the design.
Conceptual design / perfomance criteria
RANGE 20 to 30 miles round trip.
TOP SPEED 60 mph
AVERAGE SPEED for range 45 mph
Longer trips will incorporate a trailer mounted battery for extra capacity or a diesel generator.
Want to use off shelf components
Want to use prepackged forklift type battery. I think these are typically 48 volt.
Want to use 4 individual motors - one on each wheel - this will give me 4 wheel drive. 4 motors will
eliminate transmission differential thus weight (may still need a gear reduction I know)
also give me redundancy, should lower motor size (and in theory total motor weight).
Also part of dream is to rotate motor/spindle/wheel and all to a 90 degree angle so parallel parking is done at 90 degree to curb no bakcing and filling -- to get in the slot just go sideways.
Now where can I get a VFD that will connect direct to battery? I understand forklifts have this in design stage.
I know I can do braking with a VFD BUT I want to do regenerative braking where I charge the battery. Not sure how to do this with a squirrel cage 3 phase motor. Wound rotor would work but a squirrel cage ??
Also where can I get water cooled motors? say in 5 to 10 HP range? I have little adipose tissue so I get cold in Seattle and I need LOTS of cab heat.
Any ideas thoughts suggestions???
Dan Bentler
Now that I have seen and am learning about PLC and VFD I want to use both in the design.
Conceptual design / perfomance criteria
RANGE 20 to 30 miles round trip.
TOP SPEED 60 mph
AVERAGE SPEED for range 45 mph
Longer trips will incorporate a trailer mounted battery for extra capacity or a diesel generator.
Want to use off shelf components
Want to use prepackged forklift type battery. I think these are typically 48 volt.
Want to use 4 individual motors - one on each wheel - this will give me 4 wheel drive. 4 motors will
eliminate transmission differential thus weight (may still need a gear reduction I know)
also give me redundancy, should lower motor size (and in theory total motor weight).
Also part of dream is to rotate motor/spindle/wheel and all to a 90 degree angle so parallel parking is done at 90 degree to curb no bakcing and filling -- to get in the slot just go sideways.
Now where can I get a VFD that will connect direct to battery? I understand forklifts have this in design stage.
I know I can do braking with a VFD BUT I want to do regenerative braking where I charge the battery. Not sure how to do this with a squirrel cage 3 phase motor. Wound rotor would work but a squirrel cage ??
Also where can I get water cooled motors? say in 5 to 10 HP range? I have little adipose tissue so I get cold in Seattle and I need LOTS of cab heat.
Any ideas thoughts suggestions???
Dan Bentler