Matrix current limiter with transformer configurations

Details Matrix current limiter with transformer configurations Matrix current limiter with transformer configurations

2005-09-20

2005-09-20

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Superconductor protective circuits

C361S093900

Reexamination Certificate

active

06947265

ABSTRACT:
An isolation transformer is introduced into a matrix fault current limiter (MFCL) and is used to couple elements in trigger matrices and current limiting matrices. The isolation transformer can either be a voltage step-up or step-down configuration. In step-up configurations, the increased voltage supplied to the current limiting elements improves the quenching of the superconductor. In step-down configurations, current limiting elements are subject to lower voltage potentials thereby reducing the electrical insulation requirement between the trigger matrix and the current limiting matrix. In addition, the voltage amplification coefficient of each isolation transformer can vary for different columns of the current limiting matrix to maximize the current limiting performance.

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Eddie Leung, “Surge Protection for Power Grids,” IEEE Spectrum, Jul. 1997, pp 26-30 vol. 34, No. 7, IEEE, New York USA.

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