Superconducting Generator Research Articles

Equivalent circuit modeling of a superconducting synchronous generator

A method is proposed for deriving the equivalent circuit of a superconducting synchronous generator of coreless structure. In deriving the equivalent circuit, account was taken of the nonlinearity of the electromagnetic shield. Linear constants of this equivalent circuit can be calculated directly using design data, and nonlinear constants are determined using the linear constants thus determined. A method is also proposed to linearize the nonlinear equivalent circuit. The equivalent operational impedances obtained by this method make it possible to analyze the behavior of a superconducting generator in the same way as conventional synchronous generators are analyzed.

Discussion on “Penetration of transient magnetic fields through conducting cylindrical structures with particular reference to superconducting a.c. machines” and “Damping and screening in the synchronous superconducting generator”

Discussion on “Penetration of transient magnetic fields through conducting cylindrical structures with particular reference to superconducting a.c. machines” and “Damping and screening in the synchronous superconducting generator”

Damping and screening in the synchronous superconducting generator

A study of the screening and damping properties of superconducting a.c. generators shows that a single screen is unlikely to provide both adequate screening and damping. The double screen gives improved performance but is subject to degradation of both properties because of interactions between the screens. An effective means of improvement is suggested and discussed.

Westinghouse tests 5‐MW superconducting generator

Researchers at Westinghouse have developed a superconducting electric generator, which is expected to produce five megawatts at 60 Hz. Except for its small size it is believed suitable for use as a utility generator. The Westing‐house generator has been tested under open‐circuit and short‐circuit conditions.