Method for producing rectifier with switches of asymmetric volta

Details Method for producing rectifier with switches of asymmetric volta Method for producing rectifier with switches of asymmetric volta

1975-09-30

1977-11-22

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

307252P, 307252Q, 363 54, H02M 7757, H03K 335

Patent

active

040597920

ABSTRACT:
A rectifier for a medium voltage rectifier system as well as for high voltage-direct current transmission includes a plurality of thyristor switches. The switches have asymmetric voltage breakdown strengths, the asymmetry being at least 10% for the forward blocking direction compared with the reverse blocking direction. The thyristor switches are dimensioned voltage-wise to safely block even long lasting overvoltages in both the forward and reverse blocking directions occurring during operation and to withstand momentary surge and switching voltages limited by an overvoltage suppressor in the reverse blocking direction.

REFERENCES:
patent: 3579082 (1971-05-01), Bossi
patent: 3599075 (1971-08-01), Etter
patent: 3943427 (1976-03-01), Tolstov et al.

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