Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1981-06-12
1983-07-19
Beha, Jr., William H.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
318345C, 363129, H02M 112
Patent
active
043947212
ABSTRACT:
An ac to dc power conversion apparatus employing commutated thyristors has a series circuit comprising a capacitor 8 and an impedance element 9 connected at the input side of a thyristor conversion unit 4. The capacitor reduces notch voltages generated during the commutation of the thyristors, and the impedance element prevents the capacitor from resonating with other inductive reactances in the circuit. A switching device 10 is connected in parallel with the impedance element, and is closed during the commutation of the thyristors to maximize the notch voltage reduction.
REFERENCES:
patent: 4288729 (1981-09-01), Anzai et al.
Beha Jr. William H.
Mitsubishi Denki & Kabushiki Kaisha
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