Advances in materials and manufacturing process are yielding the second generation of high-temperature superconducting materials. These so-called 2G materials are now making their grid-connected debut in New York. As reported in the Physics Today article by Jeremy N. A. Matthews, “Next-generation high-Tc superconducting wires debut in the power grid”, a new material called YBCO (YBa2Cu3O7–x) has emerged to replace first-generation BSCCO (Bi2Sr2Ca2Cu3O10-x) high-temperature superconducting cable. YBCO has several advantages over BSCCO including increased energy carrying capacity (106 A/cm2 versus 104 A/cm2 for BSCCO) and reduced dependence on expensive silver sheathing.
In addition to its higher capacity and economic advantages, 2G cable has an inherent security feature. Above a critical current, 2G YBCO wire transitions from being a superconductor to a resistor. This feature enables passive suppression of power surges that can cause current faults in the grid. This novel attribute has attracted funding from the Department of Homeland Security for live, utility-scale testing of YBCO wires, and the intrinsic safety of 2G wire may elevate superconducting cable from a niche curiosity to a mainstay component of the US electricity grid. By strategically replacing power lines with 2G cable, grid failures resulting from current surges could be mitigated.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
These are the toys that inspired budding engineers to try out sublime designs, create miniature structures, and experiment with bizarre contraptions using sets that could be torn down and reconstructed over and over.
PowerStream is deploying the microgrid at its headquarters to demonstrate how people can generate and distribute their own energy and make their homes and businesses more sustainable through renewables.
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.