Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1991-04-09
1993-04-20
Beha, Jr., William H.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
362 14, 362 36, H02J 900, H02J 1500
Patent
active
052045480
ABSTRACT:
A two-quadrant converter having a connected superconducting magnetic memory used as a chopper circuit or an actuator for stabilizing networks and for short-term bridging of power failures (e.g., uninterrupted power supply). For example, a two-quadrant converter is connected on the input side to an intermediate d.c. circuit of a converter whose intermediate circuit voltage is stabilized by an indirect capacitor. A magnetic memory is charged and discharged, respectively with energy in cyclic intervals, i.e. in conjunction with interposed free-wheeling intervals. Charging takes place via triggered thyristors, discharging via conducting diodes, with blocked thyristors. When the magnetic memory is in a charged state and is to be neither charged nor discharged over lengthy intervals, its current can be conducted in the free wheel via a closed mechanical switch connected in parallel.
REFERENCES:
patent: 4079305 (1978-03-01), Peterson et al.
patent: 4599519 (1986-07-01), Boenig
patent: 4695932 (1987-09-01), Higashino
"Application of Superconducting Magnet Energy Storage, etc.", Mitani, et al., IEEE Transactions on Power Systems, vol. 3, No. 4, Nov. 1988, pp. 1418-1425.
"Stabilization of the Energy of an Accelerator Tank Circuit", Furman, Scientific-Research Institute, No. 5, Sep.-Oct. 1971, pp. 1297-1299.
Dahler Peter
Hausler Michael
Asea Brown Boveri Ltd.
Beha Jr. William H.
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