Precommutated current source inverter

Details Precommutated current source inverter Precommutated current source inverter

1986-06-05

1987-11-17

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

318767, 318802, H02M 7521

Patent

active

047077778

ABSTRACT:
In an auto-sequential commutated current source inverter (ASCI) system, an auxiliary bridge of thyristors is connected between auxiliary terminals, and a capacitor is charged and discharged resonantly by controlling a corresponding auxiliary thyristor of the bridge to connect the capacitor between the DC terminals and the AC terminals through the bridge in order to charge the capacitor at a precommutation level, whereby commutation of a main thyristor is effected at a reduced peak voltage, and no voltage clamp measure is necessary.

REFERENCES:
patent: 3980941 (1976-09-01), Griebel
patent: 4039926 (1977-08-01), Steigerwald

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