Design, performance, and cost characteristics of high temperature superconducting magnetic energy storage
- W.J. Schafer Associates, Inc., Pleasanton, CA (United States)
- General Atomics, San Diego, CA (United States)
A conceptual design for superconducting magnetic energy storage (SMES) using oxide superconductors with higher critical temperature than metallic superconductors has been analyzed for design features, refrigeration requirements, and estimated costs of major components. The study covered the energy storage range from 2 to 200 MWh at power levels from 4 to 400 MW. A SMES that uses high temperature superconductors (HTS) and operates at high magnetic field (e.g., 10 tesla), can be more compact than a comparable, conventional low-temperature device at lower field. The refrigeration power required for a higher temperature unit (20 to 77 Kelvin) will be less by 60 to 90 percent. The improvement in energy efficiency is significant for small units, but less important for large ones. The material cost for HTS units is dominated by the cost of superconductor, so that the total cost of an HTS system will be comparable to a low temperature system only if the superconductor price in $/Ampere-meter is made comparable by increasing current density or decreasing wire cost.
- OSTI ID:
- 6798958
- Journal Information:
- IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States), Vol. 8:1; ISSN 0885-8969
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ENERGY STORAGE SYSTEMS
COST
DESIGN
PERFORMANCE
CURRENT DENSITY
ENERGY EFFICIENCY
HIGH-TC SUPERCONDUCTORS
POWER CONDITIONING CIRCUITS
POWER RANGE 01-10 MW
POWER RANGE 10-100 MW
POWER RANGE 100-1000 MW
REFRIGERATION
SUPERCONDUCTING COILS
SUPERCONDUCTING MAGNETIC ENERGY STORAGE
COOLING
EFFICIENCY
ELECTRONIC CIRCUITS
ENERGY STORAGE
MAGNETIC ENERGY STORAGE
MEGAWATT POWER RANGE
POWER RANGE
STORAGE
SUPERCONDUCTORS
250100* - Energy Storage- Magnetic