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Download Applications of High Temperature Superconductors to Electric by Swarn S. Kalsi PDF

By Swarn S. Kalsi

The merely one-stop connection with layout, research, and production techniques for energy units using HTS.

High temperature superconductors (HTS) were used for development many units for electrical grids world wide and for giant send propulsion vehicles for the U.S. army. And but, there was no unmarried resource discussing concept and layout matters on the subject of energy purposes of HTS—until now. This booklet presents layout and research for varied units and comprises examples of units outfitted during the last decade.

Starting with a whole evaluate of HTS, the next chapters are devoted to particular units: cooling and thermal insulation structures; rotating AC and DC machines; transformers; fault present limiters; energy cables; and Maglev shipping. As appropriate, every one bankruptcy presents a heritage of the gadget, ideas, configuration, layout and layout demanding situations, prototypes, and production concerns, with each one finishing with a precis of the fabric coated. The layout research and layout examples offer severe perception for readers to effectively layout their very own units. unique apparatus producer (OEM) designers, and utilities clients, universities and security providers study teams, and senior/postgraduate engineering scholars and teachers will depend on this resource.

"HTS expertise reduces electrical losses and raises the potency of strength apparatus. This e-book via Swarn Kalsi, a number one professional at the HTS topic, offers a survey of the HTS expertise and the layout ideas, functionality analyses, and production strategies for energy application-related units. It compares traditional and HTS expertise ways for machine layout and gives major examples of units using the HTS know-how at the present time. The e-book turns out to be useful for a huge spectrum of execs around the globe: scholars, instructing employees, and OEM designers in addition to clients in and electrical utilities."
Professor Dr. Rolf Hellinger, learn and applied sciences company expertise, Siemens AG

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Additional info for Applications of High Temperature Superconductors to Electric Power Equipment

Sample text

This section discusses MOD/ RABiTS and IBAD-MgO processes currently in use in the United States. 9, comprises multiple coatings on a base material, or a substrate adapted to achieve the highest performance and low-cost superconductor material. AMSC selected the “metal organic deposition (MOD)/rolling assisted biaxially textured substrate (RABiTS)”—or simply “MOD/RABiTS”—process for manufacturing 2G wire. AMSC further chose to laminate a 2G wire with two normal metal tapes to create a “three-ply” architecture— consisting of 2G tape sandwiched between thin copper or stainless steel tapes—that is similar to their commercial 1G HTS wire.

4 mm wide. 4 mm = 60 N mm 2 = 60 MPa. 1, this is well below the maximum allowable tensile stress in the AMSC 1G wire. Axial stress The maximum compressive force will be borne by the pancake at the middle of the coil assembly. 21 mm = 4 N mm 2 = 4 MPa. 9) This compressive stress in the steel and the HTS conductor is well within allowable limit. Although the average tensile and compressive stresses calculated above are well within HTS conductor capabilities, local stresses could be higher because of the non-uniformity of the coil cross section, inclusion of nonmetallic components, such as electrical insulation and epoxy, that have much lower modulus of elasticity than steel.

Hence at lower operating temperatures, the actual operating efficiency is lower, the specific power of the refrigerator is higher, and the cryogenic penalty is more severe. Radebaugh [4] has extensively reviewed the state-of-the-art of various refrigeration systems available for cooling magnets built with HTS and LTS conductors. Most magnets operate at temperatures in the range of 4 to 80 K. Refrigerators in this temperature range fall in the following two categories: • • Recuperative types (steady flow).

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