Three-phase boost converter having wye-connected input capacitor

Details Three-phase boost converter having wye-connected input capacitor Three-phase boost converter having wye-connected input capacitor

1998-07-17

1999-03-23

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 89, 323225, H02M 112

Patent

active

058868917

ABSTRACT:
A three-phase boost converter having wye-connected input capacitors and a method of operating the same. The boost converter includes first, second and third phase inputs and an output. In one embodiment, the boost converter includes first, second and third inductors coupled to the first, second and third phase inputs, respectively, and operable in a discontinuous conduction mode (DCM). The boost converter further includes first and second switches coupled between corresponding rails of the output. The boost converter still further includes first, second and third capacitors coupled between the first, second and third phase inputs, respectively, and a node between the first and second switches. The first and second switches cooperate progressively to employ a voltage across the rails less a voltage across the first, second and third capacitors to discharge currents through the first, second and third inductors, respectively, and thereby reduce input current THD on all three of the phase inputs.

REFERENCES:
patent: 5345375 (1994-09-01), Mohan
patent: 5414613 (1995-05-01), Chen
Da Feng Weng, S. Yuvarajan, "Resonant Boost Input Three Phase Power Factor Corrector," 1998 IEEE, pp. 958-962.

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