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Toyota finds 10% MPG improvement in hybrid PCU

Keeping up its from-all-angles approach to efficiency, Toyota has found yet another way to eke out up to ten percent more precious MPGs in its hybrid vehicles, this time electronically. The automaker has announced the development of new silicon carbide (SiC) power semiconductors for use in power control units, which it will begin testing on Japanese roads within the next year. The PCU using the silicon carbide compound offers less electrical resistance, which improves efficiency when passing current between the battery and electric motor. It also loses less power after shutting off, and can operate at a higher frequency. The net power loss of the new PCU is just one-tenth of the current silicone-only version (the latter accounting for 20 percent of total electrical power loss in today's hybrids). The result, so far, is a claimed five-percent improvement in fuel economy in test vehicles, with the potential of ten percent by the time the new SiC power semiconductor comes to market. Additionally, the carbide wafers allow for smaller a power module, coil and capacitor, thus allowing the entire PCU to be 80 percent smaller (see the side-by-side comparison in the accompanying photo, which you can click to enlarge). We've got a while to wait before we start to see the carbide technology to start making a real-world impact. Toyota aims to begin using the SiC units in 2020. By then, with improvements in the company's other key efficiency factors - engine technology and aerodynamics - cars like the Prius will likely see significant gains in fuel economy. Read more in the press release below. Toyota Develops 'Diamond-like' Computer Chips to Boost Hybrid Mileage May 20, 2014 Toyota City, Japan – Toyota is using one of the hardest materials in nature after diamonds to develop a semiconductor chip it hopes will improve the fuel efficiency of its hybrids, such as the Prius, by as much at 10 percent. The company and its partners announced today that they have developed a silicon carbide (SiC) power semiconductor for use in automotive power control units. Toyota plans to begin test-driving vehicles with the technology on public roads in Japan within a year. The chips, made from carbide - one of the hardest materials in nature, theoretically have superior characteristics such as one-tenth the electrical power loss and 10 times the drive frequency. Toyota said the chips would also allow it to reduce the size of current automotive power control units by 80 percent.

Dutch Toyota dealer has plans for old Prius batteries as solar backup

A Toyota dealer in the Netherlands is looking to the sky for power. The Louwman Hague Toyota dealership has put almost 1,000 solar panels on the roof, and there might be some Prius hybrid batteries involved. Our Dutch isn't as good as it could be and our questions to Toyota in the US haven't turned up any definitive answers, but there is some mention that these solar panels are will someday be feeding power into a bank of Toyota hybrid batteries. The 1,000 panels make up 1,600 square meters, about the size of 4.5 IMAX movie screens, and is the largest in the area. They generate around a quarter of a megawatt of energy [as our readers point out, this is what the translation says, but it doesn't make sense, so we think it might mean a quarter MW of power a day], which is enough to power 80 homes. The excess electricity will go into the battery packs that have (possibly) already been used in a Prius or another of the company's hybrid. There are many examples of automotive batteries being tested as stationary back-up power sources, and maybe this Dutch solution can be used as a guide when Toyota sets up its new US headquarters in sunny Texas.

HyFive hydrogen infrastructure gets $51M boost across Europe

"High five!" was one of the catch-phrases of Sacha Baron Cohen's Kazakh comedic alter ego Borat. A real-world HyFive is being announced by a power broker named Boris. And this is serious business. London Mayor Boris Johnson has announced a program called HyFive, which will see automakers and other entities invest 31 million British pounds ($51 million US) in a demonstration project for hydrogen fuel-cell vehicles. By next year, London will have three hydrogen refueling stations, while there will be one each in the Danish cities of Aarhus and Odense and one in Innsbruck, Austria. Leaders of the program are planning for other stations in Sweden, Germany and Italy. The five participating automakers are BMW, Mercedes-Benz parent Daimler, Honda, Hyundai and Toyota, while other companies involved include Copenhagen Hydrogen Network, ITM Power and Linde. Those OEMs will make 110 fuel-cell vehicles available for deployment in Bolzano, Copenhagen, Innsbruck, London, Munich and Stuttgart. The program represents an effort to address the "chicken or egg?" challenge inherent to establishing a hydrogen fuel cell vehicle market. While the powertrain technology provides benefits by combining fossil-fuel-like refueling times with long driving ranges and zero emissions, establishing a refueling network and building fuel-cell vehicles is prohibitively expensive, especially in low volumes. The London mayor is no stranger to green transportation technology. Late last year, Johnson made himself available for a photo opportunity with Ecotive and Frazer-Nash, which had developed a six-passenger extended-range plug-in taxicab. The mayor got a test drive in the cabs this week. You can check out the HyFive press release below. Global leaders sign up to GBP31m plan to demonstrate viability of hydrogen vehicles International project HyFive pioneers hydrogen fuel cell technology A pioneering GBP31 million deal will be struck today (3 April) to make hydrogen vehicles a viable and environmentally friendly choice for motorists across Europe. Leading motor manufacturers, hydrogen fuel suppliers, the Mayor of London's Office and energy consultancies from around the globe are signing up to the HyFive project, the largest of its kind in Europe, at City Hall in London today.