Dual bridge matrix converter

Details Dual bridge matrix converter Dual bridge matrix converter

2006-02-07

2006-02-07

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S039000

Reexamination Certificate

active

06995992

ABSTRACT:
A dual bridge matrix converter has a line-side converter with controllable switches that receives AC power and provides unidirectional power to high and low DC link lines, and a load-side converter which receives the power from the DC link lines and provides AC power to output lines. A clamp circuit is connected across the DC link lines and includes a series connected diode and a capacitor. Negative DC link current will be conducted through the clamp diode to charge the clamp capacitor to avoid voltage spikes on the DC link lines. A controllable switch may be connected in parallel with the clamp diode and is turned on when the voltage across the clamp capacitor is above a threshold that is greater than the normal peak-to-peak AC input voltage. The switch is turned off when the voltage across the clamp capacitor is lower than the threshold voltage.

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