A 5-MW motor using HTS (high-temperature-superconducting) wire and magnets has passed load- and ship-mission-testing protocols. American Superconductor designed the motor under an Office of Naval Research contract as an interim step toward a 36-MW, 49,000-hp, 120-rpm unit under development for ship propulsion. The goal is a propulsion system that has one-third the weight and one-half the size of conventional copper-based motors of the same rating.
The 5-MW motor underwent static and dynamic tests at the Center for Advanced Power Systems at Florida State University (Tallahassee). Alstom Power Conversion's (www.powerconv.alstom.com) Rugby, UK, facility designed, built, and conducted further tests on the stator- and marine-drive electronics. In the static tests, the motor ran at full load and speed, 230 rpm, for 21 hours; resultant temperature and performance data agreed with design predictions. In the dynamic test, the test station imposed load variations of 0.5 to 10 percent around moderate- and full-power operating points. Testing also used hardware-in-the-loop simulation to control the motor and emulate complete propulsion-system operation.
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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