Twente One
Encyclopedia
The Twente One is the second solar car
developed by the University of Twente and Saxion University (at Enschede
, Deventer
and Apeldoorn
) in 2007, and succeeds the SolUTra
. It was designed to participate in the 2007 World Solar Challenge
.
Its main innovations were a pivoting solar screen that follows the angle of the sun, and a system of fresnel lens
es that focus the sunlight onto a solar panel with a system to adjust the panel so that the maximum amount of light from the lenses shines on the individual solar cell
s.
The Twente One came in on the fifth place in the 2007 World solar Challenge.
Solar car racing
Solar car racing refers to competitive races of electric vehicles which are powered by solar energy obtained from solar panels on the surface of the car . The first solar car race was the Tour de Sol in 1985 which led to several similar races in Europe, USA and Australia...
developed by the University of Twente and Saxion University (at Enschede
Enschede
Enschede , also known as Eanske in the local dialect of Twents, is a municipality and a city in the eastern Netherlands in the province of Overijssel and in the Twente region...
, Deventer
Deventer
Deventer is a municipality and city in the Salland region of the Dutch province of Overijssel. Deventer is largely situated on the east bank of the river IJssel, but also has a small part of its territory on the west bank. In 2005 the municipality of Bathmen Deventer is a municipality and city in...
and Apeldoorn
Apeldoorn
Apeldoorn is a municipality and city in the province of Gelderland, about 60 miles south east of Amsterdam, in the centre of the Netherlands. It is a regional centre and has 155,000 . The municipality of Apeldoorn, including villages like Beekbergen, Loenen and Hoenderloo, has over 155,000...
) in 2007, and succeeds the SolUTra
SolUTra
The Solutra is the first solar car designed by a group of students, the Raedthuys Solar Team, of the University of Twente. It participated in the 8th World Solar Challenge in 2005 and finished 9th place. Another Dutch team won the race with their car Nuna 3....
. It was designed to participate in the 2007 World Solar Challenge
World Solar Challenge
The World Solar Challenge is a solar-powered car race which covers through the Australian Outback, from Darwin to Adelaide.The race attracts teams from around the world, most of which are fielded by universities or corporations although some are fielded by high schools...
.
Its main innovations were a pivoting solar screen that follows the angle of the sun, and a system of fresnel lens
Fresnel lens
A Fresnel lens is a type of lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses.The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design...
es that focus the sunlight onto a solar panel with a system to adjust the panel so that the maximum amount of light from the lenses shines on the individual solar cell
Solar cell
A solar cell is a solid state electrical device that converts the energy of light directly into electricity by the photovoltaic effect....
s.
The Twente One came in on the fifth place in the 2007 World solar Challenge.
Specifications Twente One
| Length | 5000mm |
| Width | 1800mm |
| Height | 1400mm |
| Weight (excluding Driver) | <230 kg |
| Number of wheels | 3 |
| Characteristics | Pivoting solar panel & lens system with Fresnel lenses and movable solar cells |
| Top-speed | 120 km/h |
| Solar cells | 2073 Gallium-Arsenide Triple Junction, area 6m² |
| Efficiency of solar cells | >27% |
| Motor | In-Wheel Direct Drive Electric Motor NGM/CSIRO 95%-99% |
| Battery | 30 kg Lithium Polymer |
| Control | Steering wheel from aluminium tube with a width like a CD-box, and with quick-release |
| Bodywork | Carbon fibre sandwich construction |
| Chassis | Box-construction from aluminium plate-work, connected through high quality aluminium milled parts, roller-bars from chrome-molybdenum-steel |
| Fore-wheel suspension | Double A-arm construction from chrome-molybdenum-steel, horizontal racing shock absorbers, lightweight aluminium rims, ceramic bearings |
| Hind-wheel suspension | Trailing-arm construction of chrome-molybdenum-steel |
| Tires | Bridgestone/Maxxis radial 14 inch (slicks) |
| Brakes | Brake-discs with aerospace braking-hoses in the front, regenerative braking in the back |
| Rolling friction | one tenth that of a normal car |
| Air friction | one fifth that of a normal car |
| Telemetry | Wireless connection with following car, car transmits about 200 measuring signals |
| Crew | One team-member |
External links
- website of the Twente One team {in Dutch}