Power conversion system

Details Power conversion system Power conversion system

1999-02-02

2000-05-16

Nguyen, Matthew

Electric power conversion systems

Current conversion

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

H02M 3335

Patent

active

060645784

ABSTRACT:
A capacitor 8 is connected in parallel to both ends of two series-connected semiconductor devices 1, the connecting terminals of the capacitor are arranged so that they become immediately close to the terminal positions of the semiconductor devices 1, inductance of a loop circuit comprising the semiconductor devices 1 and capacitors 8 is suppressed o below 250 nH and thus, a semiconductor switching circuit is constructed. Three sets of this semiconductor switching circuit are connected in parallel with each other, both ends of upper and lower series-connected semiconductor devices in the semiconductor switching circuit are made the main circuit inputs or outputs and the intermediate connecting point of the upper and lower semiconductor devices is made the main circuit output or input and using the capacitors 8 as filter capacitors and surge voltage absorbing capacitors and thus, a power converter is constructed by only two kinds of capacitors and semiconductors.

REFERENCES:
patent: 4572969 (1986-02-01), Hellegaard et al.
patent: 5063488 (1991-11-01), Harada et al.
patent: 5155430 (1992-10-01), Gulczynski
patent: 5621625 (1997-04-01), Bang

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