Bridge type power converter with improved efficiency

Details Bridge type power converter with improved efficiency Bridge type power converter with improved efficiency

1990-11-30

1992-06-23

Wong, Peter S.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 56, 363 98, H02M 5458

Patent

active

051237466

ABSTRACT:
In a bridge type power converter, one of series-connected semiconductor elements of an inverter bridge is constituted by an MCT having a low-loss characteristic, or substantially constant-voltage characteristic, with a small voltage drop under conduction, and the other semiconductor element is constituted by an IGBT having a constant-current characteristic with a current suppressed in accordance with a drive signal. A failure current is suppressed by a current-suppressing effect of the IGBT and safely interrupted by turning off the MCT and the IGBT.

REFERENCES:
patent: 4489371 (1984-12-01), Kernick
patent: 4566059 (1986-01-01), Gallios et al.
patent: 4777578 (1988-10-01), Jahns
patent: 4788635 (1988-11-01), Heinrich
patent: 4853832 (1989-08-01), Stuart
"New Drive Electronics", Modern Technology Series, p. 76.
"MOS-Controlled Thyristor Turns Off 1 MW IN 2 .mu.S" by Frank Goodenough, p. 57, 58, 60, 63, 64 and 66.

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