FET commutated current-FED inverter

Details FET commutated current-FED inverter FET commutated current-FED inverter

1981-04-24

1983-11-15

Shoop, William M.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

323266, H02M 7515

Patent

active

044159633

ABSTRACT:
A shunt switch comprised of a field-effect transistor (Q.sub.1) is employed to commutate a current-fed inverter (10) using thyristors (SCR1, SCR2) or bijunction transistors (Q.sub.2, Q.sub.3) in a full bridge (1, 2, 3, 4) or half bridge (5, 6) and transformer (T.sub.1) configuration. In the case of thyristors, a tapped inverter (12) is employed to couple the inverter to a dc source to back bias the thyristors during commutation. Alternatively, a commutation power supply (20) may be employed for that purpse. Diodes (D.sub.1, D.sub.2) in series with some voltage dropping element (resistor R.sub.12 or resistors R.sub.1, R.sub.2 or Zener diodes D.sub.4, D.sub.5) are connected in parallel with the thyristors in the half bridge and transformer configuration to assure sharing the back bias voltage. A clamp circuit comprised of a winding (18) negatively coupled to the inductor and a diode (D.sub.3) return stored energy from the inductor to the power supply for efficient operation with buck or boost mode.

REFERENCES:
patent: 3222587 (1965-12-01), Lichowsky
patent: 3588667 (1971-06-01), Duss et al.
patent: 3742330 (1973-06-01), Hodges et al.
patent: 4256977 (1981-03-01), Hendrickson
IBM Technical Disclosure Bulletin, "Inverter Commutating Network", B. C. Felton & H. P. Meyer, vol. 16, No. 7, Dec. 1973.
Intersil Application Bulletin A035, Switchmode Converter Topologies--Make Them Work for You by Rudy Severns,-pp. 1, 15 and 32, Intersil, Inc., 10710 North Tantau Avenue, Cupertino, CA 95014.

Affiliated with

Also associated with

Rating

FET commutated current-FED inverter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with FET commutated current-FED inverter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FET commutated current-FED inverter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-162253