This articel sounds like the cubic inch battles of the 60s.(Watch the disney movie Dumbo from the 40s and watch the drunk clown scene.) Sunco was kept in business since the Covettes required the 260 blend . . . . I lost count of the volatge on thedifferent cars. This means that battery makers cannot standardize. I'd like discussion on the safety factor. I have hears or the Pintos w/ fork truck batteriies having a short and the entire car tourched in seconds from a short(wrench dropped). Are we going to wait until one death from these vehicle w/ no concern to isolate the power from the rest of the vehicle? With this much electrical power they may be the next vehicle of choise for terrorists. Just like bigger planes became bombs on 9-11. Less weight. Less power. More safety.
Essentially, Rob, you're asking how much more all-electric range can you get by employing a higher-voltage architecture? Higher-voltage architectures and higher-voltage batteries are in general better at capturing regenerative braking energy, which does get you some extra electric range. But putting a number on it is going to be tough. I'll try to get a rough estimate for you, but it will vary from vehicle to vehicle, since they have different electrical architectures. Great question.
The voltages noted in the article match the DC bus voltage one would find in an industrial Variable Frequency Drive. Using just the converter portion of such a drive would permit the use of regular 220V AC motors on the 300-360 voltages, and 460V AC motors for those in the 650V bus range.
Cap'n, this is an interesting trend. The 48V systems are an interesting bridge. As more functions are powered by electricity provided by batteries, the load on the engine is lessened. This allows smaller (more fuel efficient) engines to power the vehicle. Charging the batteries using regenerative braking captures energy that was unused before. Thanks for the article.
A middle school team from Rochester, Mich., has again nabbed the grand prize in the annual international Future City Competition, which drew students from 37 regions of the United States, as well as from England and China.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Are you being paid enough? Do you want a better job? According to a recent survey Manpower released just before Engineers Week, employers and engineers don't see eye-to-eye about the state of US engineers' skills and experience.
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