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.
Robots that walk have come a long way from simple barebones walking machines or pairs of legs without an upper body and head. Much of the research these days focuses on making more humanoid robots. But they are not all created equal.
The IEEE Computer Society has named the top 10 trends for 2014. You can expect the convergence of cloud computing and mobile devices, advances in health care data and devices, as well as privacy issues in social media to make the headlines. And 3D printing came out of nowhere to make a big splash.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.