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Multi-Stage Current Leads for Superconducting Power Transmission Cables

Award Information

Department of Defense
Award ID:
Program Year/Program:
2010 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
NAVY 10T022
Solicitation Number:
Small Business Information
Creare Inc.
P.O. Box 71 Hanover, NH -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2010
Title: Multi-Stage Current Leads for Superconducting Power Transmission Cables
Agency / Branch: DOD / NAVY
Contract: N00014-10-M-0244
Award Amount: $69,997.00


Legacy power distribution cables will not be able to meet the future requirements of Navy electric ships. While power distribution systems employing high temperature superconductors (HTS) have the potential to meet this need, further development work is required to improve the performance and increase the technology readiness level of key system components. The proposed work focuses on the current leads used to connect the cryogenic HTS cables to ambient temperature generators and loads. For ship-scale transmission currents and transmission lengths, the thermal loads due to the current leads dominate the system cooling requirements to the extent that a system with a single-stage conduction-cooled current lead would have higher losses than the equivalent copper cable. Careful optimization of both the current lead and the cryocooler is required to reduce the system power requirements. Creare and Massachusetts Institute of Technology (MIT) have teamed together to develop a multi-stage current lead designed on the basis of a system-level optimization to minimize the power required, size, weight, and cost of the HTS power transmission system. In Phase I, we will complete the optimization and design the current lead and cooling system. In Phase II, we will fabricate and test a prototype system.

Principal Investigator:

Anthony Dietz
Principal Investigator

Business Contact:

James Barry
Small Business Information at Submission:

Creare Inc.
P.O. Box 71 Hanover, NH 03755

EIN/Tax ID: 020259551
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Massachusetts Inst. of Technology
Office of Sponsored Programs
77 Massachusetts Ave., Bldg. E
Cambridge, MA 2139
Contact: Michael P. Corcoran
Contact Phone: 6172533906