IGBT-controlled thyristor AC/DC converter

Details IGBT-controlled thyristor AC/DC converter IGBT-controlled thyristor AC/DC converter

1999-10-26

2000-08-22

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 89, H02M 7155

Patent

active

061082236

ABSTRACT:
A hybrid diode/thyristor AC/DC converter includes a thyristor bridge (21) poled oppositely to a diode bridge (13), current through the thyristor bridge being controlled by IGBTs (30, 31). A thyristor turn-off circuit (40-42, 45-47) is responsive to turn-off of the IGBT to reverse bias the thyristors, thereby causing them to turn off. The thyristors and IGBTs are controlled (50) in response to voltage (55-57) of and current flowing (51-53) in the AC mains so as to cause the current flowing to or from the AC mains to be more nearly sinusoidal. The hybrid bridge handles application of regenerative power to the AC mains.

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J. Salmon, E. Nowicki, W. Xu and D. Koval, "Low distortion 3-phase rectifiers utilizing harmonic correction circuit topologies with both IGBT and thyristor switches", APEC1998, pp. 1100-1106, "No Month".
K. Oguchi and Y. Maki, "A Multilevel-Voltage Source Rectifier with a Three-Phase Diode Bridge Circuit as a Main Power Circuit", IEEE IAS Meet., Conf. Rec. 1992, pp. 695-702.

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