Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1976-02-26
1977-11-01
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
318227, 363138, H02M 5257
Patent
active
040567664
ABSTRACT:
In a cycloconverter including an intermediate d-c link, a controlled rectifier and a inverter having main thyristors in a bridge circuit with bypass diodes in a bridge connected antiparallel thereto, a quenching circuit including a quenching thyristor and a commutating capacitor is connected parallel to each bridge arm, there being provided for each two bridge circuits having a common main lead a common commutating capacitor and at least one common damping capacitor, the latter connected parallel to a bridge arm to reduce the current dependence of the commutation voltage present at the commutating capacitor.
REFERENCES:
patent: 3544879 (1970-12-01), King
patent: 3612971 (1971-10-01), Blaschke
patent: 3656006 (1972-04-01), Bourke et al.
patent: 3781645 (1973-12-01), Grom et al.
patent: 3824446 (1974-07-01), Forster et al.
patent: 3932798 (1976-01-01), Chalmers et al.
Beha Jr. William H.
Siemens Aktiengesellschaft
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