Bank selection in naturally commutated thyristor controlled stat

Details Bank selection in naturally commutated thyristor controlled stat Bank selection in naturally commutated thyristor controlled stat

1979-11-19

1981-10-13

Shoop, William M.

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

By semiconductor converter

363 79, H02M 527

Patent

active

042951909

ABSTRACT:
Firing pulses to the thyristors in the nonload carrying bank of a naturally commutated power circuit of a static power converter are inhibited only after the current therethrough actually goes to zero. Where the thyristors are arranged in pulse groups, the firing pulses to each group are inhibited separately and in some instances not all groups in the nonload carrying bank are inhibited. Termination of current flow through a thyristor group is determined by comparing the group output voltage with a composite signal representative of the intended group voltage which is generated by summing selected portions of the source voltages applied to the group. Further firing of the thyristors in the group is inhibited only after the difference between these two signals exceeds a preset threshold value for an interval at least equal in duration to the thyristor reverse recovery time.

REFERENCES:
patent: 3467850 (1969-09-01), Christiansen et al.
patent: 3568033 (1971-03-01), Gyugyi
patent: 3593106 (1971-07-01), Lafuze
patent: 3852654 (1974-12-01), Gyugyi et al.
Pelly, "Thyristor Phase-Controlled Converter and Cycloconverter", Wiley-Interscience, 1971, pp. 114-126, 190-203.

Affiliated with

Also associated with

Rating

Bank selection in naturally commutated thyristor controlled stat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bank selection in naturally commutated thyristor controlled stat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bank selection in naturally commutated thyristor controlled stat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-934312