Selective commutation circuit for an inverter

Details Selective commutation circuit for an inverter Selective commutation circuit for an inverter

1979-05-30

1981-03-10

Shoop, William M.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363136, H02M 7515

Patent

active

042557836

ABSTRACT:
The commutation circuit of an inverter is actuated only when the main thyristors cannot be transitioned to the nonconducting state by the removal of the gate signal. If a commutation pulse is required, the commutation capacitors are charged to the appropriate voltage level immediately prior to the switching point so that they may provide a sufficient pulse of current to extinguish the current through the thyristor. The commutation capacitors are then returned to a stable voltage level until another commutation pulse is required.

REFERENCES:
patent: 3249844 (1966-05-01), Jensen
patent: 4180853 (1979-12-01), Scorso, Jr. et al.

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