Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1986-09-29
1988-02-16
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 68, 378105, H02M 3315
Patent
active
047259388
ABSTRACT:
A high voltage DC/DC converter including a voltage resonance switching circuit formed by a coreless transformer, a GTO thyristor switching element connected between the primary winding of the transformer and a D.C. source, and a voltage resonance capacitor connected in parallel to the switching element. A rectifier circuit is connected to the secondary winding of the transformer to rectify an output current from the transformer circuit. The resonance frequency of the parallel resonance circuit made of the resonance capacitor and the coreless transformer is selected to be the frequency of that component of the current supplied to the circuit through the switching element, which has a greater amplitude than any other component of the current (including the fundamental frequency and other harmonic).
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patent: 4480298 (1984-10-01), Fry
G. Breitling et al.; "Polyphos 300-A Medium-Frequency X-Ray Generator", Electromedica, 2/81.
Kabushiki Kaisha Toshiba
Wong Peter S.
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