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TdS Report #30: Team Profile: Solar Black Bear, Phantom Sol


This is Ceara McNally's first year with the UMaine Solar Vehicle Team. She is
a year from finishing up her Engineering Physics double major at the University
of Maine.


First we talked about the Solar Black Bear, a pickup truck that carries a large
solar panel on top. "Last year we had a 1 kiloWatt array but we doubled it to
a 2 kiloWatt array." 12 panels are wired as 2 strings that are then wired in
parallel. The main string is permanently attached to the truck, mounted on a
framework that starts at the cab roof and runs back over the bed, sloping down
towards the rear. (In previous years the array was parallel to the road and
mounted a bit higher. I suspect this layout reduces drag.) The second string
panels are removed and stored on the bed of the truck when not in use. Setting
up the second string panels is a multi-person job, requiring holding them in
position while quick-release pins are inserted. The panel runs at 216 Volts.


The team is disappointed that the Tour de Sol eliminated the Commuter category.
"The Solar Black Bear won that for the past 3 years. I think that MIT won that
3 years in a row. We were hoping to get 4 years in a row to beat them."



We then went on to look at the Phantom Sol. It also started life as a pickup
truck, but you wouldn't guess that by looking at it now. It is low, low to the
ground with an aerodynamic body that just slips through the air. She opened
the rear battery access panel. "We use to have foam box covers. Before you
couldn't access the batteries without taking the whole body off." The car has
2 strings of 20 8-Volt blocks, wired in parallel. They feed a Raptor 1200 Amp
controller. "At full open it draws 600 amps from each pack," said Jeff
Bartosiewicz.


Jeff told me that getting to the Tour had its exciting moments. "Two weeks
before the Tour the Solar Black Bear had a voltage leakage that proved to be in
the motor. So we had to run out, get a new motor, replace it, had trouble
getting the clutch back in right, and the drive 200 miles before coming here."
The 200 miles is a Tour requirement. "It was a week of no sleep, right before
finals."



Vehicle Name Solar Black Bear
Vehicle Number 20
Category SOLAR ELECTRIC VEHICLES
vehicle type category solar electric
Team Name UMaine Solar Vehicle Team
Organization UMaine Solar Vehicle Team
City Orono
State ME
COUNTRY USA
www http://ume.maine.edu/solar
new this year? returning team and car
No People in Project 10
Time to Build 2 years
Who Built private group
part of school curriculum? Yes
Vehicle Manufacturer Chevy
Vehicle Model Year 1986
Vehicle Reg Car/Truck
Vehicle Type Class Light Duty (car, truck, van)
Vehicle Type Division Prototype
Vehicle Type Model S-10
motor kW continuous 19 kW
motor kW peak 75 kW
motor manufacturer Advanced DC Motors
motor type Series Wound
Energy Storage Manufacturer Trojan
Energy Storage System PbA
Batteries series
Battery Trojan/PbA
Battery 27 cells/ series/ $2700
Battery 3600 Whrs/ 160 V/ 1917 lbs
battery voltage 160 V
battery blocks 27 cells
battery watt hrs 3600 Whrs
battery weight 1917 lbs
battery cost $2700
control system manufacturer DC Power
control system type Raptor 600
regenerative braking? Non-regen
charger capacity 5 kW
charger current 23 A
charger input voltage 208 V
charger manufacturer Zivan
charger on board? On board
charger type High freq/ss
Plug Type 10-50P
PV cell type Monocrystalline
PV manufacturer BP Solar
PV watts 2000 W
Conversion Conversion
body material Steel body
frame material Steel frame
Length both L: 15 ft/ 10 in
Width both W: 5 ft/ 1 in
Height both H: 4 ft/ 10 in
# seats 2
Weight pounds 5000 lbs
Mfg GVW 3042 lbs
lbs of persons 150
lbs of cargo 500
brake front type Front Drum
brake rear type Rear Drum
No of Passengers 2
number of tires 4
tire manufacturer Goodyear
tire model P205/65 R15
tire type Radial
Range miles 100 miles
Program blurb The Solar Black Bear returns for its fourth year
to defend its three consecutive first place
finishes in the Solar Category. New this year is
a completely new solar array, motor controller,
truck bed and dashboard system. The new designs
are aimed at improving reliability and
practicality, while keeping the Solar Black Bear
a cost-effective solar transportation solution.




Vehicle Name Phantom Sol
Vehicle Number 66
Category BATTERY ELECTRIC VEHICLES (BEV)
vehicle type category PbA
Team Name UMaine Solar Vehicle Team
Organization UMaine Solar Vehicle Team
City Orono
State ME
COUNTRY USA
www http://www.ume.maine.edu/solar
new this year? returnign team and car
No People in Project 10
Time to Build 2 years
Who Built private group
part of school curriculum? Yes
Vehicle Manufacturer GMC
Vehicle Model Year 1983
Vehicle Reg Car/Truck
Vehicle Type Class Light Duty (car, truck, van)
Vehicle Type Division Prototype
Vehicle Type Model S-15
motor kW continuous 19 kW
motor kW peak 225 kW
motor manufacturer Advanced DC Motors
motor type Series Wound
Energy Storage Manufacturer Trojan
Energy Storage System PbA
Batteries combination par/series
Battery Trojan/PbA/T-875
Battery 40 cells/ combination parallel/series/
Battery 4500 Whrs/ 160 V/ 2530 lbs
battery voltage 160 V
battery blocks 40 cells
battery watt hrs 4500 Whrs
battery weight 2530 lbs
control system manufacturer DC Power
control system type Raptor 1200
regenerative braking? Non-regen
charger capacity 5 kW
charger current 23 A
charger input voltage 208 V
charger manufacturer Zivan
charger on board? On board
charger type High freq/ss
Plug Type 10-50P
PV cell type Amorphous
PV manufacturer Uni-Solar
PV watts 100 W
Conversion Conversion
body material Composite body
frame material Steel frame
Length both L: 16 ft/ 0 in
Width both W: 6 ft/ 2 in
Height both H: 3 ft/ 7 in
# seats 2
Weight pounds 5000 lbs
Mfg GVW 8000 lbs
lbs of persons 150
lbs of cargo 400
brake front type Front Drum
brake rear type Rear Drum
No of Passengers 2
number of tires 4
tire manufacturer Goodyear
tire model P205/65 R15
tire type Radial
Range miles 120 miles
Program blurb Originally a GMC-S15 pickup, the Phantom Sol
dispels the stereotype that EVs are impractical,
weak and expensive. In its appearance this year,
the Phantom will sport a new interior and a new
frame design, both allowing for greater
performance and reliability. Finishing touches
have been added to the body as well.


- - - -
The complete set of Tour de Sol Reports for 2002 can be found at:
http://www.AutoAuditorium.com/TdS_Reports_2002
The complete set of past Tour de Sol Reports can be found at:
http://www.FovealSystems.com/Tour_de_Sol_Reports.html
- - - -
The above is Copyright 2002 by Michael H. Bianchi.
Permission to copy is granted provided the entire article is presented
without modification and this notice remains attached.
For other arrangements, contact me at +1-973-822-2024 .
- - - -
For more on the NESEA Tour de Sol, see the web page at
http://www.nesea.org
- - - -
Official NESEA Tour de Sol information is available from the sponsor,
the Northeast Sustainable Energy Association (NESEA) at
413 774-6051 , and 50 Miles Street, Greenfield, MA 01301 , and
[email protected] . All media enquiries should be addressed to ...
Jack Groh
Groh Associates
[email protected] email
401 732-1551 telephone
401 732-0547 fax
401 952-0886 cell/pager
 
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