Category: Solar Car

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Top Teams Nuon and Tokai Race to World Solar Challenge Finish [VIDEO]

A familiar scenario is being played out between two champion teams in the 2013 Bridgestone World Solar Challenge. After nearly 2,800 kilometres just 20 minutes separates the two leading cars. It is almost a repeat performance of 2011 except on this occasion the order is reversed, with the Netherlands Nuon Solar team leading Team Tokai from Japan.

The flying Dutch team have maintained an average speed of around 93 kilometres an hour accelerating at some points today up to 113 km but the Japanese matched their pace, refusing to let the gap between the two teams widen. Unless the Japanese team has something more in reserve, Nuon in their solar car ‘Nuna 7’ look poised to take back the title they lost to Team Tokai in 2009 and again in 2011.

Both teams are camped south of Port Pirrie and are due to make their final run to the official finish line in Hindmarsh Square Adelaide, arriving mid-morning tomorrow.

Netherlands Team Twente with their ‘Red Engine’ is in third place some 240 kilometres behind the leaders with Stanford University from the USA hot on their heels in 4th just nine kilometres behind, 49 kilometres south of Woomera. Belgium’s Punch Powertrain is in 5th with Solar Energy Racers about 25 kilometres behind in 6th. Still flying the flag for Australia, team Arrow holds 7th position. Other teams still under solar power include Onda Solare from Italy, Blue Sky Solar from Canada and Australia’s UWS Solar team in SolAce.

Strong wind gusts today played havoc with some of the teams including the American solar champions Michigan, who were bumped to the side of the road coming into the Coober Pedy Control Stop. They are now frantically working on their solar car Generation hoping to resume tomorrow morning.

All Michelin Cruisers are now in Coober Pedy for their last mandatory overnight stop before they resume tomorrow morning for the final stage. It will be a battle between Team Eindhoven from the Netherlands in their four seater Stella; the German Hochschule Bochum’s Powercore SunCruiser and Australia’s UNSW Sunswift Team, in their solar sports car ‘eVe’ who flew into Coober Pedy today hours ahead of the field. Final judging of the Cruiser class will be held in Adelaide on Saturday, taking into account design, practicality and person kilometres travelled which could put Eindhoven in a strong position as they have the capacity to carry four passengers.

In the GoPro Adventure Class Australia’s Aurora arrived into Coober Pedy, their final overhead stop, ahead of the other contender still running on solar power, team Antakari from Chile.

The leaders are expected to reach ‘finish of timing’ in Angle Vale tomorrow morning before proceeding to the Official Finish Line at Hindmarsh Square. Even if a team is first to Angle Vale they must still reach the official finish line to claim victory.

The Bridgestone World Solar Challenge started October 6th in Darwin and finishes 3,000 km later tomorrow in Adelaide.

Disclosure: EV News has been engaged by the South Australian Motor Sport Board to help promote the World Solar Challenge 2013.

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Nuna 7 Takes Early Lead in 2013 Bridgestone World Solar Challenge [VIDEO]

Team Nuon from the Netherlands, in their solar car Nuna 7, took an early lead in the Schneider Electric Challenger Class of the 2013 Bridgestone World Solar Challenge and at the end of day one are approximately 633 kilometres south of Darwin. Just 32 kilometres behind at the Dunmarra Control Stop there is one minute separating second placed Team Twente in ‘Red Engine’ also from the Netherlands and the 2011 Champion team Tokai from Japan, who as predicted, made up time early from 20th position on the starting grid.

USA solar champions, team Michigan, are in fourth place approximately 10 kilometres out of Dunmarra with Australia’s Team Arrow showing they can mix it with the elite international field just behind in fifth place.

In the Michelin Cruiser Class team Bochum from Germany are in first place approximately sixty kilometres north of Dunmarra, with team Eindhoven from the Netherlands just five kilometres behind in second place, Minnesota Solar team from the USA in third place and University of NSW Sunswift team in fourth place approximately 100 kilometres north of Dunmarra.

Leading the GoPro Adventure Class was Australia’s team Aurora who have never missed a solar challenge; followed by IVE from Hong Kong and Antakari from Chile.

The Bridgestone World Solar Challenge started today October 6th in Darwin and finishes 3,000 km later on Sunday 13th October in Adelaide.

Disclosure: EV News has been engaged by the South Australian Motor Sport Board to help promote the World Solar Challenge 2013.

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Underdog Team Scores World Solar Challenge Pole Position

Qualifying day for the Bridgestone World Solar Challenge at Hidden Valley Raceway didn't follow any script with an underdog team setting the fastest overall time, a Michelin Cruiser Class car coming in second fastest and many of the favorites struggling to set a competitive time at all.

Pole position goes to Australian TeamArrow, a Queensland based team associated with the Queensland University of Technology who set a lap time 5 seconds clear of the entire field. Second in the Schneider Electric Challenger Class is Japanese team Kogakuin University Solar Vehicle Project with a close third place going to the Stanford team with Luminos.

Of the favorite teams, University of Michigan are fifth in the starting order with Nuna7 starting lucky 13th having set a time 33 seconds off the pace while Tokai Challenger starts 20th after spinning twice at the final corner leading onto the main straight. The 'official' reason given is sand on the track although only one other car spun at that corner, the Hochschule Bochum SolarCar Team who still qualified third in the Michelin Cruiser Class.

Of all the asymmetric cars (with the driver positioned on one side of the car) in the 2013 Bridgestone World Solar Challenge, Tokai Challenger is the only car with rear wheel steering which may have contributed to the car spinning each time it negotiated the final turn at Hidden Valley. We don't expect there are many hairpin corners along the 3,000 km route from Darwin to Adelaide so this may not be a good indicationn of likely race performance.

On pole for the Michelin Cruiser class, and second fastest time overall is Solar Team Eindhoven with their 4 seater Stella. University of Minnesota starts second with final turn spinners Hochschule Bochum SolarCar Team starting third.

UNSW Solar Racing Team with their Sunswift eVe two seater start forth with a qualifying time 26 seconds off the pace following some drama on their first attempt at a flying lap. Sunswift's eVe literally limped around the Hidden Valley track on it's first warm up lap and came straight back into the pits barely moving under it's own power. The problem turned out to be a seized front brake caliper that was only diagnosed after the team were forced to set a time before eVe could be repaired.

Pole position for the GoPro Adventure class, which includes quite a few older generation three wheeled solar cars that no longer qualify for the outright class, was set by SIKAT Solar Philippines with SIKAT II followed by Aurora Evolution and Team Solaris from the Dokuz Eylül University in Turkey.

This year’s Bridgestone World Solar Challenge is held from 6th – 13th October. If you can’t make it to Darwin or Adelaide, you can follow the race on Twitter via @tsport100 or @WorldSolarChlg.

Disclosure: This post is sponsored by Bridgestone World Solar Challenge. Words and thoughts are entirely my own.

Full results: Bridestone World Solar Challenge

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Top Gun Scrutineering for the Bridgestone World Solar Challenge [VIDEO]

The Clipsal and Schneider Electric Challenger Class single seat aerodynamic masterpieces were presented to Scrutineering on day 2 of the Bridgestone World Solar Challenge at the Royal Darwin Showgrounds.

This year’s Bridgestone World Solar Challenge is held from 6th – 13th October. If you can’t make it to Darwin or Adelaide, you can follow the race on Twitter via @tsport100 or @WorldSolarChlg.

Disclosure: This post is sponsored by Bridgestone World Solar Challenge. Words and thoughts are entirely my own.

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World’s Most Efficient EVs Travel 3,000 km without Plugging-In

This time next week the world's most energy efficient electric cars will be hitting speeds of up to 130 km/h (81 mph) as they race 3,000 km (1,865 Miles) coast to coast across the Australian Outback contesting the Bridgestone World Solar Challenge.

The outright contenders for line honours will come from the big budget single seater aerodynamic vehicles of the Schneider Electric Challenger Class. The only external energy source allowed during the race is solar irradiation received by a maximum of either 3 square meters of high-efficiency (22.5%+), triple-junction gallium arsenide (GaAs) solar cells or 6 square meters of silicon based solar cells with less than 22.5% efficiency. The solar array is paired with a maximum on-board energy storage capacity of 5 kw/h to assist with energy use strategy, hills, clouds or extra acceleration for overtaking.

To have a good chance to win each car has to 1) Collect as much solar energy as possible and 2) Use as little energy as possible. This means special attention needs to be applied to the efficiency of transferring electrical energy to the wheels and minimising friction from aerodynamic drag and rolling resistance which is affected by vehicle weight amongst other things.

To achieve the electrical efficiency goal, every Bridgestone World Solar Challenge winner since at least 1999 has used a direct drive in-wheel motor to propel the vehicle. Direct drive eliminates mechanical transmission losses that can be as much as 20%.

Solar cars use very low rolling resistance tires that are specially designed for this race with a rolling resistance ten times less than an average road car. With the rolling resistance of a cars tyres accounting for roughly 20% of all energy used, tyres can account for up to one in every five tanks of fuel in a regular road car. Vehicle weight is also kept extremely low with extensive use of carbon fiber, again to minimise rolling resistance.

Tokai Challenger in 2011 won with an average speed of 91.54 km/h (56 mph). With such high average speeds combined with the physics of air resistance being proportional to the square of speed, aerodynamic drag is the main source of losses on a solar race car. Much design effort is invested in CFD computer simulation, scale and full size wind tunnel testing. The best solar race cars achieve a drag coefficient as low as 0.07 (Nuna 3 – which holds the record for highest average winning speed @ 102.8 km/h) where a road car ranges from 0.24 (Tesla Model S) to 0.35 (Toyota Land Cruiser).

It is the chase of maximum aerodynamic efficiency that has lead to the race winning dominance of “coffee table” type vehicle designs which brings up the question of how practical can a solar-powered vehicles be? The 2013 Bridgestone World Solar Challenge sees the introduction of the Michelin Cruiser Class which is not focused on speed but practicality, with the ultimate goal of entrants being able to meet the requirements for road registration. Cruiser Class cars must seat a minimum of two people and will be allowed over-night battery charging at select locations.

While the Michelin cruiser class aligns solar race car design more closely with road car requirements, if the limitations of having the solar panels on the vehicle itself are removed, powering a regular road going EV with solar power is an affordable reality today!

Tesla Motors recently launched a network of solar powered superchargers capable of charging their Model S to 320 km of range in 30 minutes. Even a modest 1.5 kw residential roof-top PV solar system generates enough energy to power a commuter EV like a Nissan Leaf for more than average annual mileage. In fact, displacing the cost of petrol instead of grid power will reduce the break even time on a roof-top PV installation to just a few months.

This year’s Bridgestone World Solar Challenge is held from 6th – 13th October. If you can’t make it to Darwin or Adelaide, you can follow the race on Twitter via @tsport100 or @WorldSolarChlg.

Disclosure: This post is sponsored by Bridgestone World Solar Challenge. Words and thoughts are entirely my own.

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World’s first solar powered family car set for stellar performance [VIDEO]

With just 17 days to go before 43 teams from 24 countries take to the start line in Darwin on October 6 to contest the Bridgestone World Solar Challenge 3,000 kilometre quest across Australia; one team is already putting its revolutionary 4 seater solar family car, Stella, through its paces in Darwin.

First time entrants in the inaugural Michelin Cruiser Class, Solar Team Eindhoven of Eindhoven University of Technology from the Netherlands are hoping their pre-race road testing in Darwin will pay dividends across the Aussie outback. Purpose built for this year’s event ‘Stella’ is the first ‘energy-positive car’ with room for four people, a trunk, intuitive steering and a range of 600 kilometers.

Competition in the Michelin Cruiser Class is not about finishing first across the line. It is about taking the technology to the mainstream and developing a car for the future Competitors will be judged on energy use and efficiency; how many people they’ve carried and over what distance and the potential of the design and practicality to appeal to the mainstream motoring market. ‘Stella’ will have her work cut out for her with competition from the German Bochum team, whose former car, the ‘BoCruiser’ inspired the category; Australian teams from Uni NSW and TAFE SA; and teams from Japan, Taiwan, USA, Canada and New Zealand.

Teams in the Elite Challenger Class are also well prepared. An unprecedented number of crews arrived in Australia early including America’s most successful solar team, University of Michigan who have yet to post a win here. They’ve been venturing out on test runs, and have even organised a ‘mock race’ to simulate the real Challenge in every way possible.

The Dutch Nuon Solar team from Delft University, believes their car, Nuna 7 can deliver their fifth World Solar Challenge from seven attempts. Until recent challenges they dominated, winning in 2001, 2003, 2005 & 2007. Their excellent record was thwarted in 2009 and again in 2011 by the impressively slick Japanese Tokai University team. Team Tokai are here to win and will not give up the title without a fight. Others to watch include Team Twente with their car, Red Engine, and Stanford University, who hope their car, Luminos, will live up to its name and be a leading light.

This year’s Bridgestone World Solar Challenge is held from 6th – 13th October. If you can’t make it to Darwin or Adelaide, you can follow the race on Twitter via @tsport100 or @WorldSolarChlg.

Disclosure: This post is sponsored by Bridgestone World Solar Challenge.

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Panasonic Announce Tokai University Solar Car Team Sponsorship

Panasonic Corporation today announced that it has agreed to provide technical support to Tokai University's solar car team, which will compete in the 2013 World Solar Challenge (WSC 2013), one of the world's biggest races for solar cars, to be held from October 6 to 13 in Australia. Under the sponsorship agreement, Panasonic will provide the Japanese university team with its HIT(R) solar cells which boast the industry's top-class electricity output as well as its high-capacity lithium-ion batteries.

The WSC, which started in 1987 and became a biennial event in 1999, is a time-based competition over a distance of 3,021km from Darwin in the north down to Adelaide in the south. Teams from around the world, including universities and corporations, participate in the race in cars powered solely by sunlight.

The Tokai University team has an impressive track record in solar car racing. The team won the previous WSC races held in 2009 and 2011, and is now looking to make a hat trick in the WSC this year. Last year, the team also won the race in South Africa that was recognized by the Federation Internationale de l'Automobile (FIA) as the world's longest alternative fuel vehicle car race. Panasonic's energy products contributed to the team's victories at these international competitions.

Panasonic's HIT solar cells have a unique hybrid configuration with a crystalline silicon substrate surrounded by ultrathin amorphous silicon layers. Compared to ordinary crystalline silicon-based solar cells, Panasonic's HIT solar cells suffer less degradation of power output at high temperatures, delivering the industry's highest-level energy output per unit of area. This makes Panasonic's HIT solar cells ideal for solar cars competing in races such as the WSC, given that the WSC regulations limit the total area of solar cells installed on the body to up to six square meters and that the cells will be exposed to the scorching Australian sun. The HIT solar modules for the Tokai University team are purpose-built for the solar car race, using the same solar cells - the main component that converts the sunlight into electricity - that are mass-produced for the residential market.

The rechargeable batteries Panasonic is providing are the cylindrical 18650 type (18 mm in diameter x 65 mm in height) high-capacity lithium-ion battery cells which use the company's proprietary nickel-based positive electrode. The high-capacity and lightweight battery cells store excess power generated by the HIT solar cells so that the car is able to continue running even on overcast days.

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Bridgestone Sponsors World Solar Challenge 2013

Bridgestone will be the title sponsor of the World Solar Challenge 2013, which will be held in Australia October 6-13.

Dubbed “The Bridgestone World Solar Challenge 2013,” the event will see a record 45 teams from 26 countries compete in a 3,000 km cross-country race using only solar energy to power the vehicles.

The event will feature three separate classes, Adventure Class, which will showcase cars built for previous events; Cruiser Class, which will be judged by design practicality, and Challenger Class, which will compete for the title of the world’s most efficient solar car.

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Formula Sun Grand Prix | TRANSLOGIC 134 [VIDEO]

Translogic head back to the Circuit of the Americas race track in Austin, Texas to check out Formula Sun.

The Formula Sun Grand Prix solar car race attracts college teams from across the globe to compete and promote clean energy.

Some of these teams will, no doubt, be shaking down their vehicles in preparation for the World Solar Challenge race across Australia in October.

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Four time World Solar Challenge winners unveil – Nuna 7

The team that won the World Solar Challenge four times consecutively between 2001 and 2007 have unveiled their latest solar racer.

The Nuna7 solar-powered vehicle – which features pioneering pore-filling technology – will take part in the competition in Australia in October, representing the fourth time that the Nuon Solar Team from the Technical University in Delft and Sikkens paint experts from the company's Automotive and Aerospace Coatings business have worked together.

This year, however, will be the first time that the Nuna has used the new composite pinhole filler Aerowave 2501, which has already been used on commercial aircraft.

"When the carbon fiber shell of the Nuna is manufactured, the process creates pinholes that must be filled with putty and then sanded, often multiple times," explained John Grevers, AkzoNobel's Technical Coordinator for Benelux and Sikkens project leader for the Nuna.

"Our water-based pinhole filler replaces much of the putty and doesn't require sanding, because it can be easily wiped away. Which means it also adds less weight to the car than traditional fillers."

As well as the new pinhole filler, the Nuna 7 also features an aerodynamically advanced Sikkens coatings system designed to reduce wind drag and cut down on preparation time. Products used include Colorbuild Plus, Autocryl Plus LV, and Autoclear LV Superior.

"AkzoNobel is helping us a lot in terms of making sure that we have the best possible aerodynamics thanks to the finish they provide," said Leslie Nooteboom, the Delft team's Public Relations manager. "We feel that the company is playing a very important role in our chances of winning the race in Australia."

Added Grevers: "It has been a valuable experience for us to develop coatings that not only provide advanced aerodynamics, but can also perform well under the extreme temperatures of solar car racing. And it’s always good to work with students because they bring a fresh vision."

The team hopes to go one better than 2011, when the Nuna 6 finished second in the 11th World Solar Challenge. The biennial event – which aims to promote research on solar-powered cars – attracts teams from across the globe. The 2013 race will be staged from October 6 to 13.