Multi-Stage Current Leads for Superconducting Power Transmission Cables

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-10-M-0244
Agency Tracking Number: N10A-022-0540
Amount: $69,997.00
Phase: Phase I
Program: STTR
Awards Year: 2010
Solicitation Year: 2010
Solicitation Topic Code: N10A-T022
Solicitation Number: 2010.A
Small Business Information
P.O. Box 71, Hanover, NH, 03755
DUNS: 072021041
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Anthony Dietz
 Principal Investigator
 (603) 640-3800
Business Contact
 James Barry
Title: President
Phone: (603) 643-3800
Research Institution
 Massachusetts Inst. of Technology
 Michael P Corcoran
 Office of Sponsored Programs
77 Massachusetts Ave., Bldg. E
Cambridge, MA, 2139
 (617) 253-3906
 Nonprofit college or university
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.

* Information listed above is at the time of submission. *

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