Recent brownouts in California call attention to the need for reliable energy. Hospitals, banks, and many continuos-flow manufacturing plants rely on distributed power sources that efficiently deliver energy to computers, machinery, and other equipment around the clock and without fail. Ecostar, a new joint venture owned by Ford, Daimler-Chrysler, and Ballard Power Systems, is providing a much-needed boost to power conversion and control electronics. They are adapting technology developed for the automotive industry to a variety of industrial applications from 75 to 350 kW. Fred Flett, Ecostar's vice-president of engineering, explains that the company's new stationary power conversion electronics began in electric vehicles. "Due to our automotive experience, we are very fortunate to have been involved in developing efficient power conversion electronics," says Flett. "Our advanced control architectures and hardware-in-the-loop development tools allow development of control strategies—for example, alternative pulse width modulation techniques—while being connected to the grid," he says. Applications for the new power conversion and control system include small gas turbines, fuel cells, and other portable or stationary power generation systems. Allied Signal Power Systems Inc., for example, uses Ecostar electronics in its back-up power systems (BPS). The control system allows synchronized parallel operation of multiple power units as load is added or dropped. It also optimizes the BPS's operation for achieving the best performance for a given load. Usage modes for the Ecostar power conversion system include peak shaving, load following, base load, and grid blackout auto start. Operating modes include grid parallel operation, stand-alone power generation, auto transfer from grid parallel to stand-alone, and multi-unit connects. For more information contact Dwight Hansell, Ecostar, 15001 Commerce Dr., N. Dearborn, MI 48120; Tel: (313) 248-1496; Fax: (313) 845-5349.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.