Electric power conversion systems – Current conversion – Cryogenic
Patent
1986-02-25
1987-09-22
Wong, Peter S.
Electric power conversion systems
Current conversion
Cryogenic
363124, H02M 700
Patent
active
046959327
ABSTRACT:
A circuit for storing energy delivered from an AC supply comprises a DC capacitor and a reversible chopper between an AC/DC reversible conversion circuit connected to the AC supply and a current supply circuit including a superconductive coil. This capacitor is connected intermittently to the superconductive coil in response to the action of the reversible chopper, so that when connected it delivers energy to the superconductive coil or receives energy therefrom. The reversible chopper circuit controls in accordance with required values the magnitude of transfer of energy between the DC capacitor and the superconductive coil.
REFERENCES:
patent: 4122512 (1978-10-01), Peterson et al.
Variable-Frequency Inverter and Its Application to Motor Drives by Miller et al. Electronics and Power, Oct. 1976, pp. 675-678.
Boom et al., "Superconductive Energy Storage for Power Systems", IEEE Transaction on Magnetics, Sep. 1972, pp. 701-703.
R. D. Turner, "Superconductive Magnetic Energy Storage for Electric Power System Stabilization", American Chemical Society, 1979, pp. 494-499.
Peterson et al., "Superconductive Energy Storage Inductor-Converter Units for Power Systems", IEEE Transactions on Power Apparatus and Systems, Jul./Aug. 1975, pp. 1337-1346.
Koyama, "How to Take-in/Take-out Electric Power", Electron Engineering General Institute, 1981, pp. 81-84.
Gyugyi, "Reactive Power Generation and Control by Thyristor Circuits", Westinghouse Electric Corporation, 1981, pp. 1-11.
Jones Judson H.
Mitsubishi Denki & Kabushiki Kaisha
Wong Peter S.
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