World Solar Challenge

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Bridgestone World Solar Challenge
WorldSolarChallengeLogo.png
World Solar Challenge
VenueStuart Highway
LocationAustralia
Corporate sponsor Bridgestone
First race1987
Distance3,022 km (1,878 mi)
Duration4-7 days
Most wins (team) Nuon (Challenger)
Eindhoven (Cruiser)
3,000km route of World Solar Challenge. Australia ggc route.png
3,000km route of World Solar Challenge.
Nuna 3 of seven time victors, Dutch Nuna team Nuna3atZandvoort1.JPG
Nuna 3 of seven time victors, Dutch Nuna team
The winner of 2009 Global Green Challenge, "Tokai Challenger", Japan Tokai University Solar Car Team Solar Car Tokai Challenger.JPG
The winner of 2009 Global Green Challenge, "Tokai Challenger", Japan Tokai University Solar Car Team

The World Solar Challenge (WSC), since 2013 named Bridgestone World Solar Challenge, [1] is an international event for solar powered cars driving 3000 kilometres through the Australian outback.

Contents

With the exception of a four-year gap between the 2019 and 2023 events, owing to the cancellation of the 2021 event, [2] the World Solar Challenge is typically held every two years. The course is over 3,022 kilometres (1,878 miles) through the Australian Outback, from Darwin, Northern Territory, to Adelaide, South Australia. The event was created to foster the development of solar-powered vehicles. [3]

The WSC attracts teams from around the world, most of which are fielded by universities or corporations, although some are fielded by high schools. It has a 32-year history spanning fifteen events, with the inaugural event taking place in 1987. Initially held once every three years, the event became biennial from the turn of the century.

Since 2001 the WSC was won seven times out of ten efforts by the Nuna team and cars of the Delft University of Technology from the Netherlands. The Tokai Challenger, built by the Tokai University of Japan, was able to win 2009 and 2011. In the most recent editions (2019 & 2023), the Belgian Innoptus Solar Team formerly known as the Agoria Solar Team from KU Leuven University won.

Starting in 2007, the WSC has multiple classes. After the German team of Bochum University of Applied Sciences competed with a four-wheeled, multi-seat car, the BoCruiser (in 2009), in 2013 a radically new "Cruiser Class" was introduced, stimulating the technological development of practically usable, and ideally road-legal, multi-seater solar vehicles. Since its inception, Solar Team Eindhoven's four- and five-seat Stella solar cars from Eindhoven University of Technology (Netherlands) won the Cruiser Class in all four events so far.

Remarkable technological progress has been achieved since the General Motors led, highly experimental, single-seat Sunraycer prototype first won the WSC with an average speed of 66.9 km/h (41.6 mph). Once competing cars became steadily more capable to match or exceed legal maximum speeds on the Australian highway, the challenge rules were consistently made more demanding and challenging — for instance after Honda's Dream car first won with an average speed exceeding 55 mph (88.5 km/h) in 1996. In 2005 the Dutch Nuna team were the first to beat an average speed of 100 km/h (62 mph).

The 2017 Cruiser class winner, the five-seat Stella Vie vehicle, was able to carry an average of 3.4 occupants at an average speed of 69 km/h (43 mph). Like its two predecessors, the vehicle was successfully road registered by the Dutch team, further emphasizing the great progress in real-world compliance and practicality that has been achieved. [4] [5]

The WSC held its 30th anniversary event on 8–15 October 2017.

Objective

The objective of the challenge is to promote the innovation of solar-powered cars. It is a design competition at its core, and every team/car that successfully crosses the finish line is considered successful. Teams from universities and enterprises participate. In 2015, 43 teams from 23 countries competed in the challenge. [6]

Challenge strategy

Efficient balancing of power resources and power consumption is the key to success during the challenge. At any moment in time, the optimal driving speed depends on the weather forecast and the remaining capacity of the batteries. The team members in the escort cars will continuously remotely retrieve data from the solar car about its condition and use these data as input for prior developed computer programs to work out the best driving strategy.

It is equally important to charge the batteries as much as possible in periods of daylight when the car is not driving. To capture as much solar energy as possible, the solar panels are generally directed such that these are perpendicular to the incident sun rays. Sometimes the whole solar array is tilted for this purpose.

Important rules

Rule evolution

History

The idea for the competition originates from Danish-born adventurer Hans Tholstrup. [7] [8] He was the first to circumnavigate the Australian continent in a 16-foot (4.9 m) open boat. At a later stage in his life he became involved in various competitions with fuel-saving cars and trucks. Already in the 1980s, he became aware of the necessity to explore sustainable energy as a replacement for the limited available fossil fuel. Sponsored by BP, he designed the world's first solar car, called The Quiet Achiever, and traversed the 4,052 km (2,518 mi) between Sydney, New South Wales and Perth, Western Australia in 20 days. That was the precursor of the WSC.

After the 4th event, he sold the rights to the state of South Australia and leadership of the event was assumed by Chris Selwood.

The event was held every three years until 1999 when it was switched to every two years.

1987

The first edition of the World Solar Challenge was run in 1987 when the winning entry, GM's Sunraycer won with an average speed of 67 km/h (42 mph). [9] Ford Australia's "Sunchaser" came in second. The "Solar Resource", which came in 7th overall, was first in the Private Entry category. [10]

1990

The 1990 WSC was won by the "Spirit of Biel", built by Biel School of Engineering and Architecture in Switzerland followed by Honda in second place. [11] Video coverage here.

1993

The 1993 WSC was won by the Honda Dream, and Biel School of Engineering and Architecture took second. [12] Video coverage here.

1996

In the 1996 WSC, the Honda Dream and Biel School of Engineering and Architecture once again placed first and second overall, respectively. [13]

1999

The 1999 WSC was finally won by a "home" team, the Australian Aurora team's Aurora 101 took the prize while Queen's University was the runner-up in the most closely contested WSC so far. The SunRayce class of American teams was won by Massachusetts Institute of Technology. [14]

2001

The 2001 WSC was won by Nuna of the Delft University of Technology from the Netherlands, participating for the first time. Aurora took second place. [15] [16] [17]

2003

In the 2003 WSC Nuna 2, the successor to the winner of 2001 won again, with an average speed of 97 km/h (60 mph), while Aurora took second place again. [18]

2005

In the 2005 WSC the top finishers were the same for the third consecutive event as Nuon's Nuna 3 won with a record average speed of 102.75 km/h (63.85 mph), and Aurora was the runner-up. [15]

2007

The 2007 WSC saw the Dutch Nuon Solar team score their fourth successive victory with Nuna 4 in the Challenge Class, averaging 90.07 km/h (55.97 mph) under the new, more restrictive rules, while the Belgian Punch Powertrain Solar Team's Umicar Infinity placed second. [19]

The Adventure Class was added this year, run under the old rules, and won by Japanese Ashiya team's Tiga.

The Japanese Ashiya team's Tiga won the Adventure Class, run under the old rules, with an average speed of 93.53 km/h (58.12 mph).

2009

In 2009, the BO-Cruiser prototype from Bochum (Germany) stood out by a more practical, real world design, sporting 4 wheels and multiple seats BOcruiser 3.jpg
In 2009, the BO-Cruiser prototype from Bochum (Germany) stood out by a more practical, real world design, sporting 4 wheels and multiple seats

The 2009 WSC was won by the "Tokai Challenger", built by the Tokai University Solar Car Team in Japan with an average speed of 100.54 km/h (62.47 mph). The longtime reigning champion Nuon Solar Team's Nuna 5 finished in second place. [20]

The Sunswift IV built by students at the University of New South Wales, Australia was the winner of the Silicon-based Solar Cell Class, while Japan's Osaka Sangyo University's OSU Model S won the Adventure class.

2011

In the 2011 WSC Tokai University took their second title with an updated "Tokai Challenger" averaging 91.54 km/h (56.88 mph), and finishing just an hour before Nuna 6 of the Delft University of Technology. [21] The challenge was marred by delays caused by wildfires.

2013

The 2013 WSC featured the introduction of the Cruiser Class, which comprised more 'practical' solar cars with 2–4 occupants. The inaugural winner was Solar Team Eindhoven's Stella from Eindhoven University of Technology in the Netherlands with an average speed of 74.52 km/h (46.30 mph), while second place was taken by the PowerCore SunCruiser vehicle from team Hochschule Bochum in Germany, who inspired the creation of the Cruiser Class[ citation needed ] by racing more practical solar cars in previous WSC events. The Australian team, the University of New South Wales solar racing team Sunswift was the fastest competitor to complete the route, but was awarded third place overall after points were awarded for 'practicality' and for carrying passengers. [22]

The 2013 German PowerCore SunCruiser entry for the new for 2013 Cruiser Class PowerCore SunCruiser.jpg
The 2013 German PowerCore SunCruiser entry for the new for 2013 Cruiser Class

In the Challenger Class, the Dutch team from Delft University of Technology took back the title with Nuna 7 and an average speed of 90.71 km/h (56.36 mph), while defending champions Tokai University finished second after an exciting close competition, which saw a 10–30 minute distance, though they drained the battery in final stint due to bad weather and finished some 3 hours later; an opposite situation of the previous challenge in 2011. [23]

The Adventure Class was won by Aurora's Aurora Evolution. [24]

2015

In 2015 Solar team Eindhoven won the Cruiser Class again with their Stella Lux "family car". Stella Lux, a solar-powered family car (cropped).jpg
In 2015 Solar team Eindhoven won the Cruiser Class again with their Stella Lux "family car".

The 2015 WSC was held on 15–25 October with the same classes as the 2013 challenge.

World Solar Challenge 2015-Parade at Victoria Square in Adelaide, Australia World Solar Challenge 2015-Parade at Victoria Sqare in Adelaide, Australia.JPG
World Solar Challenge 2015-Parade at Victoria Square in Adelaide, Australia

In the Cruiser Class, the winner was once again Solar Team Eindhoven's Stella Lux from Eindhoven University of Technology in the Netherlands with an average speed of 76.73 km/h (47.68 mph), while the second place team was Kogakuin University from Japan who was the first to cross the finish line, but did not receive as many points for passenger-kilometers and practicality. Bochum took 3rd place this year with the latest in their series of cruiser cars. [25]

In the Challenger Class, the team from Delft University of Technology retained the title with Nuna 8 and an average speed of 91.75 km/h (57.01 mph), while their Dutch counterparts, the University of Twente, who led most of the challenge, finished just 8 minutes behind them in second place, making 2015 the closest finish in WSC history. Tokai University passed the University of Michigan on the last day of the event to take home the bronze. [26]

The Adventure Class was won by the Houston High School solar car team from Houston, Mississippi, United States. [27]

2017

The 2017 WSC was held on 8–15 October, featuring the same classes as 2015. The Dutch NUON team won again in the Challenger class, which concluded on 2017-10-12, and in the Cruiser Class, the winner was once again Solar Team Eindhoven, from the Netherlands as well. [28]

2019

The 2019 WSC was held from 13 to 20 October. 53 teams from 24 countries entered the competition, [29] [30] featuring the same three classes, Challenger (30 teams), Cruiser (23 teams) and Adventure. [31] In the Challenger class, Agoria Solar Team (formerly Punch Powertrain) won for the first time. Tokai University Solar Car Team finished in second place. [32]

In the Cruiser class, Solar Team Eindhoven won their fourth consecutive title. [33] Despite multiple incidents on the road, Team Sonnenwagen Aachen managed to beat other teams and finished in 6th position.

Several teams had mishaps. Vattenfall was leading when their car Nuna X caught fire. The driver was uninjured, but the vehicle was destroyed. It was the first no-finish for that team in 20 years. [30] Others were badly affected by strong winds.

Dutch team Twente was leading the journey at 100 km/h (62 mph), when their car was forced off the road by winds and rolled over. The driver was taken to hospital. Within 30 minutes team Sonnenwagen Aachen was also blown off the road north of Coober Pedy, the driver was not hurt. An 80 km/h (50 mph) speed limit was then imposed by event officials, lifted when conditions improved. The day before, wind damage to solar panels put the team from Western Sydney University out of the challenge. The driver of Agoria from Belgium escaped injury when their vehicle was "uprooted" at 100 km/h (62 mph) by severe winds, but still went on to win the Challenger class. [30] [34]

2021

In response to the COVID-19 pandemic in Australia the WSC closed entries three months earlier than normal, on 18 December 2020. They were then to "… review all current government measures relating to social distancing, density and contact tracing, international travel restrictions and isolation requirements." [35] On 12 February 2021, the South Australian Government confirmed the cancellation of the 2021 staging of the event. While the COVID-19 pandemic was not explicitly cited as the reason, the "complexities of international border closures" affecting Australia at the time appear to be the primary reason for the event's cancellation. The same statement also noted the next event would take place in October 2023 - at least 962 days from the date of announcement, and resulting in a four-year gap between events. [2] Registered teams should receive a full refund of all fees. [35]

2023

The 2023 World Solar Challenge was held from October 22-29. At the beginning of the race, 31 teams were participating, with 23 in the Challenger division and 8 in the Cruiser division. [36] The Challenger division was won by defending champions Innoptus (formerly Agoria) with an average speed of 88.2km/h, and the Cruiser division was won by UNSW Sunswift with a score of 91.1. [37] [38] Uniquely, no Cruisers were able to finish the race this year.

Many of the leading teams faced trouble during the competition. Dutch team Top Dutch raced on a perovskite-tandem solar array damaged from testing in the month leading up to race. Michigan experienced electrical issues during qualifying and had to start last. German team Sonnenwagen was blown off the road just outside of Port Agusta and had to withdraw due to new regulations. [39] Tokai had to stop for several hours on Day 4 to repair their car after sustaining damage from crossing a cattle grid. Kogakuin had consistent problems with their MPPT charge controller, and reported in an Instagram post that their panels were generating less than half the power than they should have been. [40] On the fifth day of the competition, only 4 teams (Innoptus, Twente, Brunel, and Michigan) had finished the course, and by the official end of timing, only 12 teams made it to the finish line successfully.

See also

Other solar vehicle challenges

Movie

Related Research Articles

<span class="mw-page-title-main">Nuna</span> Name of several race cars that have won the World Solar Challenge

Nuna is the name of a series of crewed solar powered race cars that have won the World Solar Challenge in Australia seven times: in 2001, 2003, 2005, 2007, 2013, 2015 and 2017. The vehicles are built by students who are part of the "Brunel Solar Team" at the Delft University of Technology in the Netherlands, sponsored by Brunel.

<span class="mw-page-title-main">American Solar Challenge</span> Solar car race

The American Solar Challenge (ASC), previously known as the North American Solar Challenge and Sunrayce, is a solar car race across the United States. In the race, teams from colleges and universities throughout North America design, build, test, and race solar-powered vehicles in a long distance road rally-style event. ASC is a test of teamwork, engineering skill, and endurance that stretches across thousands of miles of public roads.

<span class="mw-page-title-main">University of Calgary Solar Car Team</span> Solar car racing team at the University of Calgary

The University of Calgary Solar Car Team is a multi-disciplinary student-run solar car racing ("raycing") team at the University of Calgary, based in Calgary, Alberta, Canada. It was established to design and build a solar car to compete internationally in the American Solar Challenge (ASC) and the World Solar Challenge (WSC). The team is primarily composed of undergraduate students studying Engineering, Business, Science, Arts and Kinesiology. The mission of the University of Calgary Solar Car Team is to educate the community about sustainable energy and to serve as an interdisciplinary project through which students and faculty from various departments can collaborate in supporting sustainable energy.

Sunswift Racing is the solar car racing team of the University of New South Wales in Sydney, Australia. The team currently holds a number of world records and is best known for its participation in the World Solar Challenge (WSC). Since its founding in 1996 by Byron Kennedy, the Sunswift team has built a total of 7 cars, the most recent of which is Sunswift 7.

<span class="mw-page-title-main">University of Minnesota Solar Vehicle Project</span> University solar vehicle team

The University of Minnesota Solar Vehicle Project, or UMNSVP, is a team of undergraduate students from the University of Minnesota that designs and constructs solar-powered cars. In its 31 years, it has established itself as one of the world's top solar racing teams, and the top Cruiser/Multi-Occupant Vehicle team in the Western Hemisphere, with top-two finishes in eighteen of thirty-four events entered.

<span class="mw-page-title-main">Nuna 3</span>

The Nuna 3 is a solar car developed by Nuon Solar Team form the Delft University of Technology in 2004-2005 for the 2005 World Solar Challenge.

The Sunraycer was a solar-powered race car designed to compete in the World Solar Challenge, the world's first race featuring solar-powered cars. The Sunraycer was a joint collaboration between General Motors, AeroVironment, and Hughes Aircraft.

<span class="mw-page-title-main">South African Solar Challenge</span> Bi-annual South African event that is to be held for the first time in 2008

The Sasol Solar Challenge is a South African endurance challenge for solar-powered vehicles, with classes for hybrid vehicles, electric vehicles, and biofuel-powered vehicles as well. Recognised by the International Solarcar Federation, the first challenge was run in 2008, and every two years thereafter. The event covers roughly 2,500 km, but has set loops for teams to repeat, with the potential to do 5,000 km. The current record, held by Dutch team Nuon, is 4,716 km, set in 2016 in their car Nuna. The challenge route may change from year to year. In 2022, it ran from Carnival City near Johannesburg to Cape Town over the course of 8 days. The challenge has both local South African teams from both high schools and universities participate, as well as some top-ranking international teams from Japan (Tokai), Belgium and the Netherlands.

The Nuna 4 is a solar car developed by the Delft University of Technology in 2006-2007 for the 2007 World Solar Challenge.

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, US and Australia. Such challenges are often entered by universities to develop their students' engineering and technological skills, but many business corporations have entered competitions in the past. A small number of high school teams participate in solar car races designed exclusively for high school students.

Cambridge University Eco Racing (CUER) is one of UK's solar car racing teams. A team of 60 Cambridge students designs, builds and races solar-powered vehicles. Founded in 2007, their first prototype vehicle, Affinity, became the first solar-powered car to drive legally on UK roads. CUER competes in the biennial World Solar Challenge. Their race vehicle for the 2013 race, Resolution, is known for its innovative tracking plate design and unusual teardrop shape. Evolution, builds upon this previous design and was entered into the 2015 race, where it became the best UK entry since 2007. In 2017, CUER built Mirage, which crashed before the race had begun due to "a sudden loss of dynamic stability". CUER switched from Challenger Class to Cruiser Class in 2019, however, early electrical issues prevented the team from progressing beyond the first stage of the race.

<span class="mw-page-title-main">Nuna 5</span>

The Nuna 5 is the 2009 model of the Nuna series solar-powered racing car built by the Dutch Nuon Solar Team.

Nuna 2 is the name of a solar powered vehicle that in 2003 won the World solar challenge in Australia for the second time in a row, after the Nuna 1 victory in 2001. The Nuna solar racers are built by students who are part of the Nuon Solar Team at the Delft University of Technology.

<span class="mw-page-title-main">Tokai Challenger</span> Solar-powered car

Tokai Challenger is a solar car from the Japanese Tokai University. The Tokai Challenger became the winner of the 2009 and 2011 World Solar Challenge, a race for solar cars across Australia. The car is designed and tested in collaboration with students and with the help of professor Licas Lofaso from Tokai University and several Japanese companies in the automotive industry.

The 2013 World Solar Challenge was one of a biennial series of solar-powered car races, covering 3,022 km (1,878 mi) through the Australian Outback, from Darwin, Northern Territory to Adelaide, South Australia.

<span class="mw-page-title-main">PowerCore SunCruiser</span> Motor vehicle

The PowerCore SunCruiser is a solar-powered road vehicle. It was created at the Bochum University of Applied Sciences to compete at the World Solar Challenge in 2013. The PowerCore SunCruiser is the fifth vehicle built by the University of Bochum and categorized as an EC vehicle class L7e, which includes full road approval. The car was presented to the public on 25 July 2013. It offers space for three persons, can reach a top speed of over 100 km/h, and is driven by two wheel-hub motors in the back wheels. Its maximum power is 8.5 kW. The vehicle's empty weight is around 340 kg, of which the batteries take around 63 kg.

<span class="mw-page-title-main">Stella (solar vehicles)</span> Solar-powered family car

Stella and its successors Stella Lux, Stella Vie and Stella Era are a series of solar racing family cars, built for the World Solar Challenge in Australia, sofar winning its Cruiser Class all four times it was held – in 2013, 2015, 2017 and in 2019. Stella is considered the world’s first solar-powered family car and was given the 'Best Technology Development' Award at the 8th annual Crunchies in San Francisco in 2015. Being the only competing vehicle with a license plate, the road registration of Stella contributed to the winning score in the races. The vehicles are designed and built by "Solar Team Eindhoven" (STE) — some 26 students of different faculties of the Eindhoven University of Technology (TU/e) in the Netherlands. The group have set up a non-profit foundation to promote their concepts for practical solar vehicles for adoption on a broader scale.

<span class="mw-page-title-main">Sonnenwagen Aachen</span> German solar car development project

Sonnenwagen Aachen is a current project by students from RWTH Aachen University and FH Aachen for the development and construction of a solar car, to participate in the World Solar Challenge in Australia. The solar car race with a length of 3022 km from Darwin in Northern Territory to Adelaide in South Australia is known to be the longest solar car race in the world and has celebrated its 30th anniversary in October 2017.

The 1990 Hoxan World Solar Challenge was the second international solar-powered car race held in Australia. It covered about 3,000 km (1,900 mi) through the Australian Outback, from Darwin, Northern Territory to Adelaide, South Australia. The event finished at the McLaren Vale.

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