Abstract
The Cryogenics Laboratory and the Electric Power Systems Laboratory at MIT are currently involved in an effort funded by the U. S. Department of Energy to develop a 10-MVA superconducting generator. This machine incorporates the most advanced concepts available in order to demonstrate the greatest possible growth in the state of the art. A rotor and stator comprise the generator. Within the rotor are the superconducting field winding and two electromagnetic shields. The winding and shields are kept at liquid helium temperature by the rotor cooling system. The rotor is supported between thin-walled, vapor-cooled torque tubes for thermal isolation, and further isolation is obtained by using an evacuated stator bore containing a stationary thermal radiation shield.
Work supported by U. S. DOE under Contract No. EX-76-A-01-2295, Task Order No. 11.
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Abbreviations
- A :
-
= cross-sectional area
- D h :
-
= hydraulic diameter
- f :
-
= friction factor in head-loss equation
- h :
-
= enthalpy
- h fg :
-
= heat of vaporization
- K :
-
= coefficient in head-loss equation
- L :
-
= length
- ṁ :
-
= mass flow rate
- P :
-
= pressure
- q̇:
-
= heat flow rate
- r :
-
= radii from centerline
- s :
-
= enthropy
- T :
-
= temperature
- a′, b′, c′, etc.:
-
= all primed letters are coefficients for either curve fits or parametric relations
- ρ :
-
= density
- ω :
-
= rotor rotational speed
References
R. D. McCarty, NBS Tech. Note 631 (1972).
MACSYMA Reference Manual, Math. Lab. Group, Project MAC, Massachusetts Institute of Technology, Version 9, December 1977.
“Demonstration of an Advanced Superconducting Generator”, Interim Rept. 7, Massachusetts Institute of Technology, Cryogenic Engineering Laboratory and Electric Power Systems Engineering Laboratory, E(49–18)-2295, Task Order No. 11, IR 7 (1979).
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Brown, M.T., Crawford, M.E., Smith, J.L. (1980). Rotor Cooling System for a 10-MVA Superconducting Generator. In: Timmerhaus, K.D., Snyder, H.A. (eds) Advances in Cryogenic Engineering. Advances in Cryogenic Engineering, vol 35 A. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-9856-1_33
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