High efficiency turn-off loss reduction network with active disc

Details High efficiency turn-off loss reduction network with active disc High efficiency turn-off loss reduction network with active disc

1981-06-29

1982-06-22

Shoop, William M.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 24, 363 56, H02M 7537

Patent

active

043365876

ABSTRACT:
A turn-off loss reduction network is applied to the power transistors of a double-ended inverter circuit to reduce power dissipation therein. A switched resonance discharge circuit is utilized to discharge the storage capacitor of the turn-off loss reduction network. Dissipation during discharge is eliminated by including an energy recovery circuit in the discharge network which is operative to return the energy to the input voltage source of the inverter. The gate discharge circuit includes a gated resonant discharge path with an inductive storage medium having a secondary winding or otherwise coupled to return the energy to the input voltage source.
At the beginning of the conduction cycle of the power switching transistor, a gate is enabled which allows the capacitor to discharge into the inductive storage medium. When the discharge current reaches its peak value, the gate is disabled, and the energy stored in the inductive medium is discharged to the source by flyback action.

REFERENCES:
patent: 3158791 (1964-11-01), Deneen, Jr. et al.
patent: 4015185 (1977-03-01), Pollmeier
patent: 4167776 (1979-09-01), Nygaard
patent: 4276588 (1981-06-01), McLyman et al.
"Designing Non-Dissipative Current Snubbers for Switched Mode Converters", Eugene C. Whitcomb, Proceedings of the Powercon, May 1979, pp. B1-1-B1-6.

Affiliated with

Also associated with

Rating

High efficiency turn-off loss reduction network with active disc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High efficiency turn-off loss reduction network with active disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficiency turn-off loss reduction network with active disc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-655768